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Fontana M, Diana P, Territo A, Gallioli A, Piana A, Mercadé A, Fontanet S, Algaba F, Rodriguez-Faba Ó, Gaya Sopena J, Palou J, Breda A. En-bloc versus conventional transurethral resection of bladder tumors: Interim analysis of a single-center prospective randomized trial. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01134-9] [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: 10/20/2022]
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Subiela Henríquez J, Rodríguez-Faba O, Aumatell J, Krajewski W, Calderón J, Mercadé A, Balañà J, Parada R, Huguet J, Algaba F, Breda A, Palou J. Impact of clinical and pathological subtypes of Carcinoma In Situ (CIS) of the bladder: Lessons learned from long-term follow-up of a series of CIS patients treated with BCG. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01094-0] [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: 11/30/2022]
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Piana A, Territo A, Gallioli A, Fontana M, Diana P, Gaya J, Rodríguez Faba O, Huguet J, Gavrilov P, Mercadé A, Subiela J, Guirado L, Facundo C, Bellin A, Amparore D, Palou J, Porpiglia F, Breda A. New technologies in robot-assisted kidney transplantation: Improving surgical performances, expanding the indication. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01623-7] [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: 11/24/2022]
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Subiela Henríquez J, Rodríguez-Faba O, Aumatell J, Calderón J, Mercadé A, Balañà J, Esquinas C, Parada R, Huguet J, Algaba F, Breda A, Palou J. Long-term oncological outcomes of bladder Carcinoma In Situ (CIS) treated with BCG immunotherapy: Prognostic implications of 6-month pathological response assessed by a propensity score matching analysis. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01146-5] [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: 10/20/2022]
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5
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Noce A, Amills M, Manunza A, Muwanika V, Muhangi D, Aliro T, Mayega J, Ademun R, Sànchez A, Egbhalsaied S, Mercadé A, Masembe C. East African pigs have a complex Indian, Far Eastern and Western ancestry. Anim Genet 2015; 46:433-6. [PMID: 26011180 DOI: 10.1111/age.12305] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 03/25/2015] [Indexed: 11/28/2022]
Abstract
In this study, we have characterized the mitochondrial diversity of 81 swine from Uganda. Median-joining network analysis of D-loop sequences from these individuals and others characterized in previous studies allowed us to determine that Ugandan pigs cluster with populations from the West (Europe/North Africa), Far East and India. In addition, partial sequencing of the Y-chromosome UTY locus in 18 Ugandan domestic pigs revealed the segregation of a single HY1 lineage that has a cosmopolitan distribution. A Western and Far Eastern ancestry for East African pigs had been already reported, but this is the first study demonstrating an additional contribution from the Indian porcine gene pool. This result is consistent with the high frequency of zebuine alleles in cattle from East Africa. The geographic coordinates of East Africa, at the crossroads of many trading routes that, through the ages, linked Europe, Africa and Asia, might explain the rich and complex genetic heritage of livestock native to this area.
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Affiliation(s)
- A Noce
- Department of Animal Genetics, Center for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - M Amills
- Department of Animal Genetics, Center for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - A Manunza
- Department of Animal Genetics, Center for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - V Muwanika
- Molecular Genetics Laboratory, Department of Environmental Management, College of Agricultural and Environmental Sciences, Makerere University, P.O.Box 7026, Kampala, Uganda
| | - D Muhangi
- Department of Wildlife and Aquatic Resources, School of Veterinary Medicine and Animal Resources, College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P. O. Box 7062, Kampala, Uganda
| | - T Aliro
- Directorate of Production and Marketing, Gulu District Local Government, P. O. Box 2, Gulu, Uganda
| | - J Mayega
- Molecular Genetics Laboratory, Department of Environmental Management, College of Agricultural and Environmental Sciences, Makerere University, P.O.Box 7026, Kampala, Uganda
| | - R Ademun
- Ministry of Agriculture Animal Industry and Fisheries, National Animal Disease Diagnostics and Epidemiology Centre, P. O. Box 513, Entebbe, Uganda
| | - A Sànchez
- Department of Animal Genetics, Center for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - S Egbhalsaied
- Young Researchers and Elite Club, Isfahan (Khorasgan) branch, Islamic Azad University, Isfahan, Iran
| | - A Mercadé
- Departament de Ciencia Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - C Masembe
- Department of Biological Sciences, School of BioSciences, Makerere University, Box 7062, Kampala, Uganda
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Mercadé A, Vigo J, Rull V, Vegas-Villarrúbia T, Garcés S, Lara A, Cañellas-Boltà N. Vegetación y paisaje alrededor del lago de Montcortès (Prepirineos catalanes) como instrumento para el estudio paleoecológico de los sedimentos lacustres. Collect Bot 2013. [DOI: 10.3989/collectbot.2013.v32.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
El lago de Montcortès (42º 19′ N, 0º 59′ E; 1027 m altitud) posee sedimentos con laminaciones anuales, ideales para estudios paleoecológicos de alta resolución. Para el análisis palinológico de estos sedimentos, es necesario conocer en detalle la vegetación local, como fuente del polen sedimentario. El objetivo de este estudio es reconocer y cartografiar los tipos de vegetación presentes alrededor del lago, para lo cual se delimitó un área rectangular de unas 48 ha. Del estudio florístico de este espacio resultó un catálogo de 534 especies, que sirvió de base para el análisis de vegetación. Para ello, se llevaron a cabo 42 inventarios fitosociológicos, que se utilizaron para elaborar una síntesis del paisaje vegetal mediante cartografía digital. Como resultado, se obtuvieron 52 unidades de vegetación, expresión concreta de los hábitats CORINE definidos en la lista de los hábitats de Cataluña. Cada una de estas unidades se describió con criterios florísticos, fisionómicos, fitogeográficos, ambientales y de uso humano. La siguiente etapa consistirá en el estudio palinológico de las especies más representativas de los tipos de vegetación y hábitats establecidos aquí, con el fin de optimizar las interpretaciones paleoecológicas futuras.
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Hernández-Sánchez J, Amills M, Pena RN, Mercadé A, Manunza A, Quintanilla R. Genomic architecture of heritability and genetic correlations for intramuscular and back fat contents in Duroc pigs. J Anim Sci 2012; 91:623-32. [PMID: 23230112 DOI: 10.2527/jas.2012-5270] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Genetic parameters such as heritability and correlations of fat traits in a Duroc population were dissected using molecular markers. The heritabilities of intramuscular fat in 2 muscles, the gluteus medius and LM, and back fat were 0.54, 0.48, and 0.23, respectively. The genetic correlations were well estimated with standardized SNP effects, being 0.65 between intramuscular fat traits and ∼0.37 between any intramuscular fat trait and back fat. Genetic correlations were overestimated when ignoring molecular information. Twelve chromosomes showed additive genetic variance for intramuscular fat compared with 8 for back fat. Population structure was accommodated using 4 different models. The number of significant, P < 5 × 10(-5) (suggestive, P < 2 × 10(-3)), SNP varied across models and ranged from 0 to 4 (2 to 261) for intramuscular fat in the gluteus medius, from 0 to 57 (9 to 564) for intramuscular fat in the LM, and from 3 to 4 (22 to 168) for back fat. Several SNP showed significant deviations from an additive mode of action. Only 2 SNP significantly affected 2 traits simultaneously.
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Affiliation(s)
- J Hernández-Sánchez
- IRTA, Genètica i Millora Animal, 191 Av. Alcalde Rovira Roure, 25198 Lleida, Spain.
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Ramayo-Caldas Y, Mercadé A, Castelló A, Yang B, Rodríguez C, Alves E, Díaz I, Ibáñez-Escriche N, Noguera J, Pérez-Enciso M, Fernández A, Folch J. Genome-wide association study for intramuscular fatty acid composition in an Iberian × Landrace cross1. J Anim Sci 2012; 90:2883-93. [DOI: 10.2527/jas.2011-4900] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Ramayo-Caldas
- Centre for Research in Agricultural Genomics (CRAG), Consortium CSIC-IRTA-UAB-UB. Edifici CRAG, Campus Universitat Autonoma Barcelona. 08193 Bellaterra, Spain
| | - A. Mercadé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autò noma de Barcelona. 08193 Bellaterra, Spain
| | - A. Castelló
- Centre for Research in Agricultural Genomics (CRAG), Consortium CSIC-IRTA-UAB-UB. Edifici CRAG, Campus Universitat Autonoma Barcelona. 08193 Bellaterra, Spain
| | - B. Yang
- Centre for Research in Agricultural Genomics (CRAG), Consortium CSIC-IRTA-UAB-UB. Edifici CRAG, Campus Universitat Autonoma Barcelona. 08193 Bellaterra, Spain
| | - C. Rodríguez
- Departamento de Mejora Genética Animal, INIA, Ctra. De la Coruña km. 7. 28040 Madrid, Spain
| | - E. Alves
- Departamento de Mejora Genética Animal, INIA, Ctra. De la Coruña km. 7. 28040 Madrid, Spain
| | - I. Díaz
- IRTA, Tecnologia dels Aliments. 17121 Monells, Spain
| | | | - J.L. Noguera
- IRTA, Genètica i Millora Animal. 25198 Lleida, Spain
| | - M. Pérez-Enciso
- Centre for Research in Agricultural Genomics (CRAG), Consortium CSIC-IRTA-UAB-UB. Edifici CRAG, Campus Universitat Autonoma Barcelona. 08193 Bellaterra, Spain
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autò noma de Barcelona. 08193 Bellaterra, Spain
- ICREA, Passeig Lluis Companys. Barcelona, Spain
| | - A.I. Fernández
- Departamento de Mejora Genética Animal, INIA, Ctra. De la Coruña km. 7. 28040 Madrid, Spain
| | - J.M. Folch
- Centre for Research in Agricultural Genomics (CRAG), Consortium CSIC-IRTA-UAB-UB. Edifici CRAG, Campus Universitat Autonoma Barcelona. 08193 Bellaterra, Spain
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autò noma de Barcelona. 08193 Bellaterra, Spain
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Burgos-Paz W, Souza CA, Castelló A, Mercadé A, Okumura N, Sheremet'eva IN, Huang LS, Cho IC, Paiva SR, Ramos-Onsins S, Pérez-Enciso M. Worldwide genetic relationships of pigs as inferred from X chromosome SNPs. Anim Genet 2012; 44:130-8. [PMID: 22590984 DOI: 10.1111/j.1365-2052.2012.02374.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2012] [Indexed: 02/04/2023]
Abstract
The phylogeography of the porcine X chromosome has not been studied despite the unique characteristics of this chromosome. Here, we genotyped 59 single nucleotide polymorphisms (SNPs) in 312 pigs from around the world, representing 39 domestic breeds and wild boars in 30 countries. Overall, widespread commercial breeds showed the highest heterozygosity values, followed by African and American populations. Structuring, as inferred from FST and analysis of molecular variance, was consistently larger in the non-pseudoautosomal (NPAR) than in the pseudoautosomal regions (PAR). Our results show that genetic relationships between populations can vary widely between the NPAR and the PAR, underscoring the fact that their genetic trajectories can be quite different. NPAR showed an increased commercial-like genetic component relative to the PAR, probably because human selection processes to obtain individuals with high productive parameters were mediated by introgressing boars rather than sows.
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Affiliation(s)
- W Burgos-Paz
- Center for Research in Agricultural Genomics, Universitat Autònoma de Barcelona, Bellaterra, Spain
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Pérez-Haase A, Batriu E, Mercadé A, Blanco-Moreno JM. Sobre la distribució de <i>Trifolium diffusum</i> Ehrh. als Països Catalans. Collect Bot 2009. [DOI: 10.3989/collectbot.2009.v28.34] [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: 11/05/2022] Open
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Estellé J, Mercadé A, Pérez-Enciso M, Pena RN, Silió L, Sánchez A, Folch JM. Evaluation of FABP2 as candidate gene for a fatty acid composition QTL in porcine chromosome 8. J Anim Breed Genet 2009; 126:52-8. [PMID: 19207930 DOI: 10.1111/j.1439-0388.2008.00754.x] [Citation(s) in RCA: 9] [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: 11/30/2022]
Abstract
The objective of this work was to analyse the porcine Fatty acid binding protein 2, intestinal (FABP2) gene as a candidate gene for a fatty acid composition quantitative trait loci (QTL) previously described on porcine chromosome 8 in an Iberian by Landrace F(2) cross (IBMAP). Re-sequencing of the porcine FABP2 gene in three Iberian and eight Landrace parental animals resulted in the identification of three single-nucleotide polymorphisms, all of them localized in intron 1. The polymorphism FABP2:g.412T>C, localized in intron 1, and two additional microsatellites were genotyped in the IBMAP population in order to perform an association test of the FABP2 gene and to better define the QTL position previously described. Association analyses of the FABP2:g.412T>C with the fatty acid composition traits were not significant in simple association and marker-assisted association tests, suggesting that the FABP2 region sequenced is not responsible for the QTL. However, the addition of three new markers to the pedigree allowed us to define the S0144-SW61 marker interval as the most likely QTL position, facilitating the future study of other candidate genes for this QTL.
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Affiliation(s)
- J Estellé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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Pérez-Enciso M, Mercadé A, Bidanel JP, Geldermann H, Cepica S, Bartenschlager H, Varona L, Milan D, Folch JM. Large-scale, multibreed, multitrait analyses of quantitative trait loci experiments: the case of porcine X chromosome. J Anim Sci 2008; 83:2289-96. [PMID: 16160038 DOI: 10.2527/2005.83102289x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [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: 11/13/2022] Open
Abstract
A QTL analysis of multibreed experiments (i.e., crossed populations involving more than two founder breeds) offers clear advantages over classical two-breed crosses, among them increased power and a more comprehensive coverage of the total genetic variability in the species. An alternative to designed multibreed crosses is to reanalyze jointly several experiments involving different breeds. We report a multibreed, multitrait QTL analysis of SSCX that involves five different crosses, six breeds, and almost 3,000 genotyped individuals using a truly multibreed strategy to allow for any number of founder breed origins. Traits analyzed were growth, fat thickness, carcass length, and shoulder and ham weights. Generally, the joint analysis resulted in more significant QTL than the single-experiment analyses. We show that the QTL for fatness, which is highly significant (nominal P < 10(-43)), is of Asiatic origin (Meishan). The next most significant QTL (nominal P < 10(-15)) affected ham weight and seems to be segregating only between Large White and the rest of the breeds. A multitrait, multi-QTL analysis suggests that these are two distinct loci. Additionally, a locus segregating only between Iberian and Landrace affects live weight. The advantages of joint, multibreed analyses clearly outweigh their potential risks.
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Affiliation(s)
- M Pérez-Enciso
- Institut Català de Recerca i Estudis Avançats, Lluis Companys 23, Barcelona 08010, Spain.
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Ballester M, Mercadé A, Van Haandel B, Santamartina J, Sánchez A. Individual identification and genetic traceability in the pig using the SNPlexTM genotyping system. Anim Genet 2007; 38:663-5. [DOI: 10.1111/j.1365-2052.2007.01654.x] [Citation(s) in RCA: 7] [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: 11/27/2022]
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Estellé J, Pérez-Enciso M, Mercadé A, Varona L, Alves E, Sánchez A, Folch JM. Characterization of the porcine FABP5 gene and its association with the FAT1 QTL in an Iberian by Landrace cross. Anim Genet 2007; 37:589-91. [PMID: 17121606 DOI: 10.1111/j.1365-2052.2006.01535.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [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: 11/29/2022]
Abstract
We have characterized and mapped the porcine fatty acid binding protein 5, epidermal (FABP5) gene. According to linkage and RH mapping, this gene is located close to the FABP4 (fatty acid binding protein 4, adipocyte) gene on swine chromosome 4. We resequenced 4.7 kb of the FABP5 gene in the parental population of an Iberian x Landrace cross (IBMAP), identifying seven SNPs arranged in two distinct FABP5 haplotypes. QTL and association analyses in the IBMAP population showed that this gene is strongly associated with fat deposition. QTL and haplotype analysis revealed that both FABP4 and FABP5 (clustered in mammals) are major candidate genes for the FAT1 QTL; the most likely position for the FAT1 QTL is between these two genes. Finally, our results suggest the presence of more than one QTL affecting fatness traits on porcine chromosome 4.
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Affiliation(s)
- J Estellé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
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Abstract
CDP-diacylglycerol synthase (CDS) catalyzes the conversion of phosphatidic acid to CDP-diacylglycerol, an important precursor for the synthesis of phosphatidylinositol, phosphatidylglycerol, and cardiolipin. We amplified and sequenced 2,053 bp of the pig CDS1 mRNA. The structure of the pig CDS1 gene was determined, being very similar to that of the human, rat, and mouse genes with respect size and organization of the 13 exons. In addition, we identified three polymorphic positions in exons 10 and 11. One of them, the A/C1006, was genotyped in samples belonging to Iberian, Landrace, Large White, Pietrain, and Meishan pig breeds. Expression of this gene was also analyzed by real-time polymerase chain reaction (PCR) in different tissues showing a high CDS1 expression in testis. Moreover, a 1240-bp fragment of the pig CDS2 mRNA was amplified and sequenced. Finally, the CDS1 and CDS2 genes were physically mapped to porcine chromosomes 8 and 17, respectively, by using the INRA, University of Minnesota porcine Radiation Hybrid panel (IMpRH).
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Affiliation(s)
- A Mercadé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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Mercadé A, Pérez-Enciso M, Varona L, Alves E, Noguera JL, Sánchez A, Folch JM. Adipocyte fatty-acid binding protein is closely associated to the porcine FAT1 locus on chromosome 41. J Anim Sci 2006; 84:2907-13. [PMID: 17032783 DOI: 10.2527/jas.2005-663] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [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
We identified 22 polymorphisms in the adipocyte fatty-acid binding protein (FABP4) gene, a strong positional candidate gene for the FAT1 locus in porcine chromosome 4. The most informative polymorphism, an insertion/deletion in intron 1, together with a single nucleotide polymorphism in intron 3, was genotyped in a cross between Iberian and Landrace pigs. After performing QTL, single marker, and haplotype analyses, we showed that there were at least 2 quantitative trait genes in the FAT1 region and that the FABP4 polymorphism was tightly associated to fatness. A comparison of allelic frequencies in a panel of pig breeds suggested that the Del2634C polymorphism was under indirect selection. We also showed that FABP4 is tightly associated to fatness but not growth. Furthermore, a haplotype analysis suggests that there is genetic heterogeneity at the FAT1 locus within the Landrace breed.
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Affiliation(s)
- A Mercadé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
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Mercadé A, Estellé J, Pérez-Enciso M, Varona L, Silió L, Noguera JL, Sánchez A, Folch JM. Characterization of the porcine acyl-CoA synthetase long-chain 4 gene and its association with growth and meat quality traits. Anim Genet 2006; 37:219-24. [PMID: 16734680 DOI: 10.1111/j.1365-2052.2006.01436.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [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: 11/27/2022]
Abstract
Summary Long-chain acyl-CoA synthetase (ACSL) catalyses the formation of long-chain acyl-CoA from fatty acid, ATP and CoA, activating fatty acids for subsequent reactions. Long-chain acyl-CoA synthetase thus plays an essential role in both lipid biosynthesis and fatty acid degradation. The ACSL4 gene was evaluated as a positional candidate gene for the quantitative trait loci (QTL) located between SW2456 and SW1943 on chromosome X. We have sequenced 4906 bp of the pig ACSL4 mRNA. Sequence analysis allowed us to identify 10 polymorphisms located in the 3'-UTR region and to elucidate two ACSL4 haplotypes. Furthermore, a QTL and an association study between polymorphisms of the ACSL4 gene and traits of interest were carried out in an Iberian x Landrace cross. We report QTL that have not been previously identified, and we describe an association of the ACSL4 polymorphisms with growth and percentage of oleic fatty acid. Finally, we have determined allelic frequencies in 140 pigs belonging to the Iberian, Landrace, Large White, Meishan, Pietrain, Duroc, Vietnamese, Peccary and Babirusa populations.
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Affiliation(s)
- A Mercadé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
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Mercadé A, Sánchez A, Folch JM. Exclusion of the acyl CoA:diacylglycerol acyltransferase 1 gene (DGAT1) as a candidate for a fatty acid composition QTL on porcine chromosome 4. J Anim Breed Genet 2005; 122:161-4. [PMID: 16130466 DOI: 10.1111/j.1439-0388.2005.00521.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 12/01/2022]
Abstract
DGAT1 is a microsomal enzyme that catalyses the final step in triglycerides synthesis. DGAT1-deficient mice are viable, lean, fertile and resistant to diet induced obesity. We have previously identified a quantitative trait loci (QTL) on chromosome 4 that affects fatty acid composition in an F2 cross between Iberian x Landrace. The human DGAT1 gene is located on chromosome 8q24.3, this region aligns to porcine chromosome 4, making the pig DGAT1 gene a suggestive positional candidate gene for the QTL. In this study, we sequenced 1679 bp of the mRNA from animals of five pig breeds (Iberian, Landrace, Large White, Piétrian and Meishan) to identify genetic variants. One of the polymorphisms found creates a polymorphic HinfI restriction site and it was genotyped by PCR-RFLP in these five pig breeds. Allele A was not found in the analysed Iberian and Landrace populations, whereas Meishan population presents the highest frequency (35%). The DGAT1 gene was located by radiation hybrid mapping to the porcine chromosome 4, outside the confidence interval for the fatty acid composition QTL and excludes it as a positional candidate gene.
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Affiliation(s)
- A Mercadé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain.
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Estellé J, Mercadé A, Noguera JL, Pérez-Enciso M, Ovilo C, Sánchez A, Folch JM. Effect of the porcine IGF2-intron3-G3072A substitution in an outbred Large White population and in an Iberian × Landrace cross1. J Anim Sci 2005; 83:2723-8. [PMID: 16282609 DOI: 10.2527/2005.83122723x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [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
The IGF2-intron3-G3072A substitution has been recently described as the causal factor of the imprinted QTL for fat deposition and muscle growth detected within the porcine IGF2 region. The objective of this study was to investigate the IGF2 substitution effect in a Large White outbred population and in an Iberian x Landrace F2 cross. The results showed that the substitution has significant effects on fatness, growth, and shape traits with estimated effects in the expected direction. These results agree with those obtained in the F2 cross, where the IGF2-intron3-G3072A substitution is segregating only in a small family. In addition, a QTL scan has been performed in the F2 population for the traits used in the IGF2 substitution effect validation. Results of this study demonstrated that there are QTL segregating in swine chromosome 2 other than the IGF2 substitution for carcass weight, LM area, and pH measured at 24 h after slaughter. The results confirm the relevance of the IGF2 substitution, but they also show that there are still valuable mutations to be revealed in this chromosome.
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Affiliation(s)
- J Estellé
- Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
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Ovilo C, Fernández A, Noguera JL, Barragán C, Letón R, Rodríguez C, Mercadé A, Alves E, Folch JM, Varona L, Toro M. Fine mapping of porcine chromosome 6 QTL and LEPR effects on body composition in multiple generations of an Iberian by Landrace intercross. Genet Res (Camb) 2005; 85:57-67. [PMID: 16089036 DOI: 10.1017/s0016672305007330] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.8] [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: 11/07/2022] Open
Abstract
The leptin receptor gene (LEPR) is a candidate for traits related to growth and body composition, and is located on SSC6 in a region where fatness and meat composition quantitative trait loci (QTL) have previously been detected in several F2 experimental designs. The aims of this work were: (i) to fine map these QTL on a larger sample of animals and generations (F3 and backcross) of an Iberian×Landrace intercross and (ii) to examine the effects of LEPR alleles on body composition traits. Eleven single nucleotide polymorphisms (SNPs) were detected by sequencing LEPR coding regions in Iberian and Landrace pig samples. Three missense polymorphisms were genotyped by pyrosequencing in 33 F0, 70 F1, 418 F2, 86 F3 and 128 individuals coming from the backcross of four F2 males with 24 Landrace females. Thirteen microsatellites and one SNP were also genotyped. Traits analysed were: backfat thickness at different locations (BFT), intramuscular fat percentage (IMFP), eye muscle area (EMA), loin depth (LOD), weight of shoulder (SHW), weight of ribs (RIBW) and weight of belly bacon (BBW). Different statistical models were applied in order to evaluate the number and effects of QTL on chromosome 6 and the possible causality of the LEPR gene variants with respect to the QTL. The results support the presence of two QTL on SSC6. One, at position 60–100 cM, affects BFT and RIBW. The other and more significant maps in a narrow region (130–132 cM) and affects BFT, IMFP, EMA, LOD, SHW, RIBW and BBW. Results also support the association between LEPR alleles and BFT traits. The possible functional implications of the analysed polymorphisms are considered.
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Affiliation(s)
- C Ovilo
- Departamento de Mejora Genética Animal, SGIT-INIA, 28040 Madrid, Spain.
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