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Silva A, Constant C, Salgueiro M, Descalço A, Pereira L, Bandeira T, Ferreira R. 189 Nocturnal pulse oximetry in paediatric cystic fibrosis patients. Is FEV1 a good predictor? J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60330-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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102
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Asseiceira I, Mexia S, Pinheiro J, Pereira L, Barreto C. 269 Nutritional assessment and dietary intake in children and teenagers with cystic fibrosis. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60410-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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103
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Sampurno S, Bijenhof A, Cheasley D, Xu H, Robine S, Hilton D, Alexander WS, Pereira L, Mantamadiotis T, Malaterre J, Ramsay RG. The Myb-p300-CREB axis modulates intestine homeostasis, radiosensitivity and tumorigenesis. Cell Death Dis 2013; 4:e605. [PMID: 23618903 PMCID: PMC3641342 DOI: 10.1038/cddis.2013.119] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The gastrointestinal (GI) epithelium is constantly renewing, depending upon the intestinal stem cells (ISC) regulated by a spectrum of transcription factors (TFs), including Myb. We noted previously in mice with a p300 mutation (plt6) within the Myb-interaction-domain phenocopied Myb hypomorphic mutant mice with regard to thrombopoiesis, and here, changes in GI homeostasis. p300 is a transcriptional coactivator for many TFs, most prominently cyclic-AMP response element-binding protein (CREB), and also Myb. Studies have highlighted the importance of CREB in proliferation and radiosensitivity, but not in the GI. This prompted us to directly investigate the p300–Myb–CREB axis in the GI. Here, the role of CREB has been defined by generating GI-specific inducible creb knockout (KO) mice. KO mice show efficient and specific deletion of CREB, with no evident compensation by CREM and ATF1. Despite complete KO, only modest effects on proliferation, radiosensitivity and differentiation in the GI under homeostatic or stress conditions were evident, even though CREB target gene pcna (proliferating cell nuclear antigen) was downregulated. creb and p300 mutant lines show increased goblet cells, whereas a reduction in enteroendocrine cells was apparent only in the p300 line, further resembling the Myb hypomorphs. When propagated in vitro, crebKO ISC were defective in organoid formation, suggesting that the GI stroma compensates for CREB loss in vivo, unlike in MybKO studies. Thus, it appears that p300 regulates GI differentiation primarily through Myb, rather than CREB. Finally, active pCREB is elevated in colorectal cancer (CRC) cells and adenomas, and is required for the expression of drug transporter, MRP2, associated with resistance to Oxaliplatin as well as several chromatin cohesion protein that are relevant to CRC therapy. These data raise the prospect that CREB may have a role in GI malignancy as it does in other cancer types, but unlike Myb, is not critical for GI homeostasis.
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Lopez Medina A, Aramburu D, Mera M, Pereira L, Landesa I, Ochagavia V, Nieto I, Mañas J, Nogueiras J, Muñoz V. PO-0860: ARTFIBio Project: quantifying tumour response voxel by voxel. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33166-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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105
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Mera M, Pereira L, Aramburu D, Teijeiro A, Andrade B, Vazquez J, Lopez Medina A, Medal D, Salvador F, Salgado M. EP-1154: Modelling and Commissioning a Brainlab© radiosurgery cone system for trigeminal neuralgia. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33460-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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106
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107
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Ferreira L, Lisenko K, Barros B, Zangeronimo M, Pereira L, Sousa R. Influence of medium-chain triglycerides on consumption and weight gain in rats: a systematic review. J Anim Physiol Anim Nutr (Berl) 2013; 98:1-8. [DOI: 10.1111/jpn.12030] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 12/07/2012] [Indexed: 12/24/2022]
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108
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Shalliker R, Camenzuli M, Pereira L, Ritchie H. Parallel segmented flow chromatography columns: Conventional analytical scale column formats presenting as a ‘virtual’ narrow bore column. J Chromatogr A 2012; 1262:64-9. [DOI: 10.1016/j.chroma.2012.08.093] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 08/23/2012] [Accepted: 08/24/2012] [Indexed: 10/27/2022]
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109
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Pereira L, Saraiva IH, Coelho R, Newman DK, Louro RO, Frazão C. Crystallization and preliminary crystallographic studies of FoxE from Rhodobacter ferrooxidans SW2, an Fe(II) oxidoreductase involved in photoferrotrophy. Acta Crystallogr Sect F Struct Biol Cryst Commun 2012; 68:1106-8. [PMID: 22949206 DOI: 10.1107/s174430911203271x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 07/18/2012] [Indexed: 11/11/2022]
Abstract
FoxE is a protein encoded by the foxEYZ operon of Rhodobacter ferrooxidans SW2 that is involved in Fe(II)-based anoxygenic photosynthesis (`photoferrotrophy'). It is thought to reside in the periplasm, where it stimulates light-dependent Fe(II) oxidation. It contains 259 residues, including two haem c-binding motifs. As no three-dimensional model is available and there is no structure with a similar sequence, crystals of FoxE were produced. They diffracted to 2.44 Å resolution using synchrotron radiation at the Fe edge. The phase problem was solved by SAD using SHELXC/D/E and the experimental maps confirmed the presence of two haems per molecule.
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Bezerra L, Barbosa A, Carvalho G, Leão A, Araújo M, Rebouças R, Caribé J, Pereira L. Composição Centesimal da Carne de Ovinos Terminados com Dietas Contendo Torta de Amendoim. ACTA ACUST UNITED AC 2012. [DOI: 10.15528/2176-4158/rcpa.v14n1p110-113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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111
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Figueiredo G, Moreira R, Cardoso M, Pereira L, Coral G, Stein A, Braga C, Montarroyos U, Ximenes R. Impact of immunization against hepatitis B virus in areas of high endemicity in Brazil. Int J Infect Dis 2012. [DOI: 10.1016/j.ijid.2012.05.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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112
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Castanhinha S, Pereira L, Aguiar S, Ramirez M, Rodrigues T, Barreto C, Melo Cristino J. 117 Diagnosis of Pseudomonas aeruginosa infection using serology in children with cystic fibrosis. J Cyst Fibros 2012. [DOI: 10.1016/s1569-1993(12)60287-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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113
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Mera M, Pereira L, Mera M, Pereira L, Meilán E, Moral FD, Teijeiro A, Salgado M, Andrade B, Gomez F, Fuentes-Vázquez V, Caruncho J, Medina A. SU-E-T-264: New Concrete Designed and Evaluation for Megavoltage X Radiotherapy Facilities (CONTEK-RFH2). Med Phys 2012; 39:3764. [DOI: 10.1118/1.4735331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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114
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Crucq S, Leroy D, Pecqueur S, Delagrange A, Klonaris S, Pereira L. Exposition aux métaux « CMR » des fumées de soudage dans une population de soudeurs du Valenciennois. ARCH MAL PROF ENVIRO 2012. [DOI: 10.1016/j.admp.2012.03.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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115
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Pereira L, Martin Z, Mera M, Meilán E, Vazquez J, Salgado M, Medina A. SU-E-T-388: Verification of Monitor Units and Dose Distributions in IMRT Plans Using Monte Carlo Algorithms on the E-IMRT Web Platform. Med Phys 2012; 39:3793. [DOI: 10.1118/1.4735477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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116
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Medina AL, Mera M, Pereira L, Fuentes-Vazquez V, Meilan E, Gomez F, Caruncho J, Salgado M. EP-1486 NEW CONCRETE DESIGNED SPECIFICALLY FOR PHOTON SHIELDING (CONTEKÆ-RFH2). Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71819-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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117
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Pereira L, Ruiz-Hurtado G, Morel E, Dominguez A, Benitah JP, Bers DM, Lezoualc'h F, Gomez A, Collins TP, Sikkel MB, O' Gara P, Lyon AR, Harding SE, Macleod KT, Wantha S, Alard JE, Doering Y, Drechsler M, Megens RT, Hackeng T, Weber C, Soehnlein O, Dietel B, Cicha I, Altendorf R, Daniel WG, Garlichs CD, Mukherjee U, Ong SB, Davidson SM, Szabadkai G, Yellon DM, Hausenloy DJ, Neary MT, Hall AR, Hirst E, Ong SB, Mohun TJ, Hausenloy DJ, Breckenridge RA, Akhmedov A, Camici GG, Stivala S, Holy EW, Breitenstein A, Lohmann C, Beer JH, Tanner FC, Matter CM, Luescher TF, Hulsmans M, Geeraert B, Arnould T, Tsatsanis C, Holvoet P, Hermida N, Markl A, Hamelet J, Herijgers P, Horman S, Noppe G, Beauloye C, Van Bilsen M, Dessy C, Balligand JL, Del Giorno R, Moreno Velasquez I, Leander K, Frumento P, Vikstrom M, Pirro M, Mannarino MR, Mannarino E, De Faire U, Gigante B, Chaudhry B, Chrystal P, Henderson DJ, Fulcoli FG, Chen L, Martucciello S, Illingworth E, Baldini A, Mavroidis M, Davos C, Psarras S, Varela A, Kostavasili I, Capetanaki Y, Engstrom Klarstrom K, Skoglund C, Kalvegren H, Bengtsson T, Drawnel F, Wachten D, Molkentin JD, Sjaastad I, Liu N, Mikoshiba K, Bootman MD, Roderick HL, Di Gregoli K, Salter R, Johnson JL. Oral abstract presentations. Cardiovasc Res 2012. [DOI: 10.1093/cvr/cvr331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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118
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Pereira L, Clarençon F, Leclercq D, Jean B, Drier A, Galanaud D, Dormont D, Chiras J. Aspects scanographiques et IRM des lésions du cuir chevelu chez l’adulte – une revue iconographique. J Neuroradiol 2012. [DOI: 10.1016/j.neurad.2012.01.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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119
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Pereira L, Frédéric Clarençon F, Cormier E, Rose M, Le Jean L, Chiras J. Sécurité et efficacité de la sacroplastie percutanée : expérience monocentrique portant sur 58 patients consécutifs. J Neuroradiol 2012. [DOI: 10.1016/j.neurad.2012.01.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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120
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Pereira L, Carvalho MRS, Fonseca CG, Lima SSS, Cerqueira EMM, Jorge W, Castro MCL. Influence of Arg72Pro polymorphisms of TP53 on the response of buccal cells to radiotherapy. GENETICS AND MOLECULAR RESEARCH 2011; 10:3552-8. [PMID: 22194206 DOI: 10.4238/2011.december.14.6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Polymorphisms in the TP53 gene codon 72 (Arg72Pro) influence apoptosis induction and DNA damage repair. We evaluated how variants of protein p53 (p53Arg and p53Pro) affect cell death and DNA damage repair by analyzing the frequencies of karyorrhexis and micronuclei. There were significant differences in the frequency of karyorrhexis between the three p53 genotypes (Arg/Arg, Arg/Pro, and Pro/Pro), between samples taken before and after radiotherapy, and between patients and controls. The frequency of micronucleated cells increased significantly after radiotherapy. There were no significant differences in the micronucleus frequency in healthy tissues of these patients compared to controls, or in the comparisons between the three genotypes. We conclude that Arg72Pro polymorphism influences cell apoptotic capacity. This is the first study investigating karyorrhexis and micronuclei, as indicators of apoptosis after radiotherapy, and how these indicators are influenced by the TP53 polymorphism Arg72Pro.
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121
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Soares P, Alshamali F, Pereira JB, Fernandes V, Silva NM, Afonso C, Costa MD, Musilova E, Macaulay V, Richards MB, Cerny V, Pereira L. The Expansion of mtDNA Haplogroup L3 within and out of Africa. Mol Biol Evol 2011; 29:915-27. [DOI: 10.1093/molbev/msr245] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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122
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Guariglia D, Pereira L, Dias J, Pereira H, Menacho M, Silva D, Cyrino E, Cardoso J. Time-of-Day Effect on Hip Flexibility Associated with the Modified Sit-and- Reach Test in Males. Int J Sports Med 2011; 32:947-52. [DOI: 10.1055/s-0031-1283182] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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123
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Giraut L, Falque M, Drouaud J, Pereira L, Martin OC, Mézard C. Genome-wide crossover distribution in Arabidopsis thaliana meiosis reveals sex-specific patterns along chromosomes. PLoS Genet 2011; 7:e1002354. [PMID: 22072983 PMCID: PMC3207851 DOI: 10.1371/journal.pgen.1002354] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 09/08/2011] [Indexed: 11/19/2022] Open
Abstract
In most species, crossovers (COs) are essential for the accurate segregation of homologous chromosomes at the first meiotic division. Their number and location are tightly regulated. Here, we report a detailed, genome-wide characterization of the rate and localization of COs in Arabidopsis thaliana, in male and female meiosis. We observed dramatic differences between male and female meiosis which included: (i) genetic map length; 575 cM versus 332 cM respectively; (ii) CO distribution patterns: male CO rates were very high at both ends of each chromosome, whereas female CO rates were very low; (iii) correlations between CO rates and various chromosome features: female CO rates correlated strongly and negatively with GC content and gene density but positively with transposable elements (TEs) density, whereas male CO rates correlated positively with the CpG ratio. However, except for CpG, the correlations could be explained by the unequal repartition of these sequences along the Arabidopsis chromosome. For both male and female meiosis, the number of COs per chromosome correlates with chromosome size expressed either in base pairs or as synaptonemal complex length. Finally, we show that interference modulates the CO distribution both in male and female meiosis.
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124
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Pereira L, Saraiva IH, Coelho R, Newman DK, Louro RO, Frazão C. Structure of FoxE, a Fe(II) oxidoreductase involved in anoxygenic photosysnthesis. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311094578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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125
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Giorgi M, Volman S, Pereira L, Coca A. Análisis de la persistencia de pacientes bajo tratamiento antihipertensivo en un programa de educación y administración de medicación. HIPERTENSION Y RIESGO VASCULAR 2011. [DOI: 10.1016/j.hipert.2011.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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