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Soriano-Sexto A, Gallego D, Leal F, Castejón-Fernández N, Navarrete R, Alcaide P, Couce ML, Martín-Hernández E, Quijada-Fraile P, Peña-Quintana L, Yahyaoui R, Correcher P, Ugarte M, Rodríguez-Pombo P, Pérez B. Identification of Clinical Variants beyond the Exome in Inborn Errors of Metabolism. Int J Mol Sci 2022; 23:ijms232112850. [PMID: 36361642 PMCID: PMC9654865 DOI: 10.3390/ijms232112850] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/13/2022] [Accepted: 10/21/2022] [Indexed: 11/24/2022] Open
Abstract
Inborn errors of metabolism (IEM) constitute a huge group of rare diseases affecting 1 in every 1000 newborns. Next-generation sequencing has transformed the diagnosis of IEM, leading to its proposed use as a second-tier technology for confirming cases detected by clinical/biochemical studies or newborn screening. The diagnosis rate is, however, still not 100%. This paper reports the use of a personalized multi-omics (metabolomic, genomic and transcriptomic) pipeline plus functional genomics to aid in the genetic diagnosis of six unsolved cases, with a clinical and/or biochemical diagnosis of galactosemia, mucopolysaccharidosis type I (MPS I), maple syrup urine disease (MSUD), hyperphenylalaninemia (HPA), citrullinemia, or urea cycle deficiency. Eight novel variants in six genes were identified: six (four of them deep intronic) located in GALE, IDUA, PTS, ASS1 and OTC, all affecting the splicing process, and two located in the promoters of IDUA and PTS, thus affecting these genes’ expression. All the new variants were subjected to functional analysis to verify their pathogenic effects. This work underscores how the combination of different omics technologies and functional analysis can solve elusive cases in clinical practice.
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Affiliation(s)
- Alejandro Soriano-Sexto
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Diana Gallego
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Fátima Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Natalia Castejón-Fernández
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Rosa Navarrete
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Patricia Alcaide
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - María L. Couce
- Unit for the Diagnosis and Treatment of Congenital Metabolic Diseases, Clinical University Hospital of Santiago de Compostela, Health Research Institute of Santiago de Compostela, University of Santiago de Compostela, CIBERER, MetabERN, 15706 Santiago de Compostela, Spain
| | - Elena Martín-Hernández
- Unidad de Enfermedades Mitocondriales-Metabólicas Hereditarias, Servicio de Pediatría, Centro de Referencia Nacional (CSUR) y Europeo (MetabERN) para Enfermedades Metabólicas Hereditarias, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - Pilar Quijada-Fraile
- Unidad de Enfermedades Mitocondriales-Metabólicas Hereditarias, Servicio de Pediatría, Centro de Referencia Nacional (CSUR) y Europeo (MetabERN) para Enfermedades Metabólicas Hereditarias, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - Luis Peña-Quintana
- Pediatric Gastroenterology, Hepatology and Nutrition Unit, Complejo Hospitalario Universitario Insular Materno-Infantil (CHUIMI), Universidad de Las Palmas de Gran Canaria, Asociación Canaria para La Investigación Pediátrica, Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN) ISCIII, 35016 Gran Canaria, Spain
| | - Raquel Yahyaoui
- Laboratory of Metabolic Disorders and Newborn Screening, Institute of Biomedical Research in Málaga (IBIMA-Plafatorma BIONAND), IBIMA-RARE, Málaga Regional University Hospital, 29010 Málaga, Spain
| | - Patricia Correcher
- Nutrition and Metabolophaties Unit, Hospital Universitario La Fe, 46026 Valencia, Spain
| | - Magdalena Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Pilar Rodríguez-Pombo
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Departamento de Biología Molecular, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, 28049 Madrid, Spain
- Correspondence:
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Leal N, Freitas A, Leal F, Pimenta J, Gregório T. Risk factors for chronic thromboemboli after pulmonary thromboembolism. Eur J Intern Med 2022; 102:133-135. [PMID: 35465973 DOI: 10.1016/j.ejim.2022.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 11/26/2022]
Affiliation(s)
- N Leal
- Serviço de Medicina Interna do Centro Hospitalar De Vila Nova De Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - A Freitas
- Serviço de Medicina Interna do Centro Hospitalar De Vila Nova De Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - F Leal
- Serviço de Medicina Interna do Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - J Pimenta
- Serviço de Medicina Interna do Centro Hospitalar De Vila Nova De Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - T Gregório
- Serviço de Medicina Interna do Centro Hospitalar De Vila Nova De Gaia/Espinho, Vila Nova de Gaia, Portugal
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Martínez-Pizarro A, Leal F, Holm LL, Doktor TK, Petersen USS, Bueno M, Thöny B, Pérez B, Andresen BS, Desviat LR. Antisense Oligonucleotide Rescue of Deep-Intronic Variants Activating Pseudoexons in the 6-Pyruvoyl-Tetrahydropterin Synthase Gene. Nucleic Acid Ther 2022; 32:378-390. [PMID: 35833796 PMCID: PMC9595628 DOI: 10.1089/nat.2021.0066] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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] [Indexed: 12/28/2022] Open
Abstract
We report two new 6-pyruvoyl-tetrahydropterin synthase splicing variants identified through genomic sequencing and transcript analysis in a patient with tetrahydrobiopterin deficiency, presenting with hyperphenylalaninemia and monoamine neurotransmitter deficiency. Variant c.243 + 3A>G causes exon 4 skipping. The deep-intronic c.164-672C>T variant creates a potential 5' splice site that leads to the inclusion of four overlapping pseudoexons, corresponding to exonizations of an antisense short interspersed nuclear element AluSq repeat sequence. Two of the identified pseudoexons have been reported previously, activated by different deep-intronic variants, and were also detected at residual levels in control cells. Interestingly, the predominant pseudoexon is nearly identical to a disease causing activated pseudoexon in the F8 gene, with the same 3' and 5' splice sites. Splice switching antisense oligonucleotides (SSOs) were designed to hybridize with splice sites and/or predicted binding sites for regulatory splice factors. Different SSOs corrected the aberrant pseudoexon inclusion, both in minigenes and in fibroblasts from patients carrying the new variant c.164-672C>T or the previously described c.164-716A>T. With SSO treatment PTPS protein was recovered, illustrating the therapeutic potential of the approach, for patients with different pseudoexon activating variants in the region. In addition, the natural presence of pseudoexons in the wild type context suggests the possibility of applying the antisense strategy in patients with hypomorphic PTS variants with the purpose of upregulating their expression to increase overall protein and activity.
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Affiliation(s)
- Ainhoa Martínez-Pizarro
- Centro de Biología Molecular Severo Ochoa UAM-CSIC, Centro de Diagnóstico de Enfermedades Moleculares (CEDEM), CIBERER, IdiPaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Fátima Leal
- Centro de Biología Molecular Severo Ochoa UAM-CSIC, Centro de Diagnóstico de Enfermedades Moleculares (CEDEM), CIBERER, IdiPaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Lise Lolle Holm
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Thomas K Doktor
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Ulrika S S Petersen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - María Bueno
- Congenital Metabolic Diseases Unit, Hospital Virgen del Rocio, Sevilla, Spain
| | - Beat Thöny
- Division of Metabolism, University Children's Hospital Zürich, Zürich, Switzerland
| | - Belén Pérez
- Centro de Biología Molecular Severo Ochoa UAM-CSIC, Centro de Diagnóstico de Enfermedades Moleculares (CEDEM), CIBERER, IdiPaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Brage S Andresen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Lourdes R Desviat
- Centro de Biología Molecular Severo Ochoa UAM-CSIC, Centro de Diagnóstico de Enfermedades Moleculares (CEDEM), CIBERER, IdiPaz, Universidad Autónoma de Madrid, Madrid, Spain
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Durá M, Sánchez-García Á, Sáez C, Leal F, Chis AE, González-Vélez H, García-Gómez JM. Towards a Computational Approach for the Assessment of Compliance of ALCOA+ Principles in Pharma Industry. Stud Health Technol Inform 2022; 294:755-759. [PMID: 35612198 DOI: 10.3233/shti220578] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The pharmaceutical industry is a data-intensive environment and a heavily-regulated sector, where exhaustive audits and inspections are performed to ensure the safety of drugs. In this context, processing and evaluating the data generated in the manufacturing lines is a relevant challenge since it requires compliance with pharma regulations. This work combines data integrity metrics and blockchain technology to evaluate the compliance-degree of ALCOA+ principles among different levels of drug manufacturing data. We propose the DIALCOA tool, a software to assess the compliance-degree for each ALCOA+ principle, based on the assessment of data from manufacturing batch reports and its different levels of information.
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Affiliation(s)
- Marta Durá
- Biomedical Data Science Lab, Instituto Universitario de Tecnologías de la Información y Comunicaciones, Universitat Politècnica de València, Camino de Ver s/n, Valencia 46022, Spain
| | - Ángel Sánchez-García
- Biomedical Data Science Lab, Instituto Universitario de Tecnologías de la Información y Comunicaciones, Universitat Politècnica de València, Camino de Ver s/n, Valencia 46022, Spain
| | - Carlos Sáez
- Biomedical Data Science Lab, Instituto Universitario de Tecnologías de la Información y Comunicaciones, Universitat Politècnica de València, Camino de Ver s/n, Valencia 46022, Spain
| | - Fátima Leal
- REMIT, Universidade Portucalense, R. Dr. António Bernardino de Almeida 541, 4200-072 Porto, Portugal
- Cloud Competency Centre, School of Computing, National College of Ireland, Mayor Street, IFSC, Dublin D01 K6W2, Ireland
| | - Adriana E Chis
- Cloud Competency Centre, School of Computing, National College of Ireland, Mayor Street, IFSC, Dublin D01 K6W2, Ireland
| | - Horacio González-Vélez
- Cloud Competency Centre, School of Computing, National College of Ireland, Mayor Street, IFSC, Dublin D01 K6W2, Ireland
| | - Juan M García-Gómez
- Biomedical Data Science Lab, Instituto Universitario de Tecnologías de la Información y Comunicaciones, Universitat Politècnica de València, Camino de Ver s/n, Valencia 46022, Spain
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Sánchez-Lijarcio O, Yubero D, Leal F, Couce ML, Luis GGS, López-Laso E, García-Cazorla À, Pías-Peleteiro L, de Azua Brea B, Ibáñez-Micó S, Martínez GM, Schifferli MT, Enriquez SW, Ugarte M, Artuch R, Pérez B. The clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1. Clin Genet 2022; 102:40-55. [PMID: 35388452 PMCID: PMC9325084 DOI: 10.1111/cge.14138] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 11/27/2022]
Abstract
Glucose transporter 1 deficiency syndrome (GLUT1DS) is a neurometabolic disorder caused by haploinsufficiency of the GLUT1 glucose transporter (encoded by SLC2A1) leading to defective glucose transport across the blood–brain barrier. This work describes the genetic analysis of 56 patients with clinical or biochemical GLUT1DS hallmarks. 55.4% of these patients had a pathogenic variant of SLC2A1, and 23.2% had a variant in one of 13 different genes. No pathogenic variant was identified for the remaining patients. Expression analysis of SLC2A1 indicated a reduction in SLC2A1 mRNA in patients with pathogenic variants of this gene, as well as in one patient with a pathogenic variant in SLC9A6, and in three for whom no candidate variant was identified. Thus, the clinical and biochemical hallmarks generally associated with GLUT1DS may be caused by defects in genes other than SLC2A1.
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Affiliation(s)
- Obdulia Sánchez-Lijarcio
- Centro de Diagnóstico de Enfermedades Moleculares, Center of Molecular Biology Severo Ochoa (CBMSO), Autonomous University of Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Delia Yubero
- Sant Joan de Déu Research Institute, CIBERER, Barcelona, Spain
| | - Fátima Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Center of Molecular Biology Severo Ochoa (CBMSO), Autonomous University of Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - María L Couce
- Unit for the Diagnosis and Treatment of Congenital Metabolic Diseases, Clinical University Hospital of Santiago de Compostela, Health Research Institute of Santiago de Compostela, University of Santiago de Compostela, CIBERER, MetabERN, Santiago de Compostela, Spain
| | | | - Eduardo López-Laso
- Paediatric Neurology Unit, Department of Paediatrics, University Hospital Reina Sofía, Maimónides Institute of Biomedical Investigation of Cordoba (IMIBIC) and CIBERER, Córdoba, Spain
| | | | | | | | - Salvador Ibáñez-Micó
- Neuropaediatrics Unit, Department of Pediatrics, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | | | | | - Scarlet Witting Enriquez
- Child Neurology Service, Clinical Hospital San Borja Arriarán, University of Chile, Santiago, Chile
| | - Magdalena Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Center of Molecular Biology Severo Ochoa (CBMSO), Autonomous University of Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Rafael Artuch
- Sant Joan de Déu Research Institute, CIBERER, Barcelona, Spain
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Center of Molecular Biology Severo Ochoa (CBMSO), Autonomous University of Madrid, CIBERER, IdiPAZ, Madrid, Spain
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Orem J, Martin M, Mbulaiteye SM, Mullighan CG, Mungall AJ, Mungall K, Namirembe C, Noy A, Petrello H, Ogwang MD, Martin J, Reynolds SJ, Swerdlow SH, Traverse‐Glehen A, Wilson WH, Marra MA, Staudt LM, Scott DW, Morin RD, Timothy G, Dryer M, Dreval K, Gerhard DS, Hilton LK, Abramson JS, Bartlett NL, Bethony J, Bowen J, Bryan A, Casper C, Thomas N, Gastier‐Foster JM, Grande BM, Griner NB, Gross TG, Harris NL, Irvin JD, Jaffe E, Leal F. KEY GENETIC AND MOLECULAR ABERRATIONS IDENTIFIED IN BOTH ADULT AND EBV‐POSITIVE BURKITT LYMPHOMA PATIENTS. Hematol Oncol 2021. [DOI: 10.1002/hon.68_2879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dreval K, Thomas N, Gerhard DS, Hilton LK, Wong J, Abramson JS, Bartlett NL, Bethony J, Bowen J, Bryan AC, Casper C, Dyer M, Gastier‐Foster JM, Grande BM, Greiner T, Griner NB, Gross TG, Harris NL, Irvin JD, Jaffe E, Leal F, Martin JP, Martin M, Mbulaiteye SM, Mullighan CG, Mungall AJ, Mungall K, Namirembe C, Noy A, Ogwang MD, Orem J, Petrello H, Reynolds SJ, Swerdlow SH, Traverse‐Glehen A, Wilson WH, Marra MA, Staudt LM, Scott DW, Morin RD. COPY NUMBER VARIATION ANALYSIS IDENTIFIES DISTINCT GENOMIC FEATURES IN ADULT BURKITT LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.67_2879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Carvalho M, Leal F, Mota S, Aguiar A, Sousa S, Nunes J, Calhaz-Jorge C. The effect of denudation and injection timing in the reproductive outcomes of ICSI cycles: new insights into the risk of in vitro oocyte ageing. Hum Reprod 2021; 35:2226-2236. [PMID: 32951048 DOI: 10.1093/humrep/deaa211] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 01/12/2020] [Revised: 07/23/2020] [Indexed: 12/30/2022] Open
Abstract
STUDY QUESTION Does the time elapsed between oocyte pick-up (OPU) and denudation or injection affect the probability of achieving a live birth (LB) in ICSI cycles? SUMMARY ANSWER Prolonged oocyte culture before denudation (>4 h) was associated with an increase in clinical pregnancy (CP), LB and cumulative LB (CLB) rates when compared with earlier denudation timings. WHAT IS KNOWN ALREADY Oocyte maturation is a complex and dynamic process involving structural and biochemical modifications in the cell necessary to support fertilization and early embryo development. While meiotic competence is easily identifiable by the presence of an extruded first polar body, cytoplasmic maturation cannot be assessed microscopically. Culturing oocytes with their surrounding cumulus cells (CCs) prior to ICSI can enhance the completion of in vitro cytoplasmic maturation; conversely, prolonged culture may induce cell degeneration. The optimal culture intervals prior to oocyte denudation and/or injection have not yet been established and may prove relevant for the improvement of ICSI reproductive outcomes. STUDY DESIGN, SIZE, DURATION This is a single-centre retrospective cohort analysis of 1378 ICSI cycles performed between January 2005 and October 2018. Data were categorized according to: (i) the time interval between OPU and denudation (<3 h, 3-4 h and ≥4 h), (ii) the time interval between denudation and ICSI (<1.5 h, 1.5-2 h, ≥2 h) and (iii) the time interval between OPU and ICSI (<5 h, 5-6 h and ≥6 h). The effect of these timings on fertilization, CP, LB and CLB rates were compared. The culture intervals between different procedures were dependent exclusively on laboratory workload. PARTICIPANTS/MATERIALS, SETTING, METHODS ICSI cycles performed in women younger than 40 years old using autologous gametes with at least one metaphase II injected oocyte were included. The effect of oocyte culture duration prior to denudation and injection of the oocytes was compared using multivariable regression accounting for potential confounding variables. MAIN RESULTS AND THE ROLE OF CHANCE Fertilization and oocyte damage rate after ICSI was found to be independent of the time interval to denudation (<3 h, 3-4 h and ≥4 h) and/or injection (<5 h, 5-6 h and ≥6 h). Extending oocyte culture before denudation significantly improved CP (29.5%, 42.7% and 50.6%, respectively), LB (25.1%, 34.4% and 40.7%, respectively) and CLB rates (26.0%, 36.1% and 42.2%, respectively), particularly if the time interval was at least 4 h. Additionally, LB (31.7%, 35.8% and 27.4%, respectively) and CLB rates (34.2%, 36.6% and 27.7%, respectively) were also dependent on the time from OPU to injection. LIMITATIONS, REASONS FOR CAUTION This study is limited by its retrospective nature and potential unmeasured confounding cannot be excluded. Furthermore, the effect of even shorter or longer periods of culture before denudation and/or injection were not evaluated and should not be extrapolated from these results. WIDER IMPLICATIONS OF THE FINDINGS Our findings propose new evidence of a previously unrecognized protective effect of the CCs-oocyte interactions in human ART, raising the question of a possible downstream effect in embryogenesis which significantly affects LB rates. Additionally, this is the first study to suggest a negative effect of further extending culture before ICSI on LB and CLB rates, thus potentially allowing for the narrowing of an optimal ICSI time interval. Simple strategies such as the establishment of more effective time frames to perform these procedures and adjusting laboratory practice may prove beneficial, ultimately improving ICSI reproductive outcomes. STUDY FUNDING/COMPETING INTEREST(S) None. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- M Carvalho
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal
| | - F Leal
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal
| | - S Mota
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal
| | - A Aguiar
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal
| | - S Sousa
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal
| | - J Nunes
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal
| | - C Calhaz-Jorge
- Reproductive Medicine Unit, Department of Obstetrics, Gynaecology and Reproductive Medicine, Santa Maria University Hospital, Lisbon, Portugal.,Faculdade de Medicina da Universidade de Lisboa,, Lisbon, Portugal
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Gallego D, Leal F, Gámez A, Castro M, Navarrete R, Sanchez-Lijarcio O, Vitoria I, Bueno-Delgado M, Belanger-Quintana A, Morais A, Pedrón-Giner C, García I, Campistol J, Artuch R, Alcaide C, Cornejo V, Gil D, Yahyaoui R, Desviat LR, Ugarte M, Martínez A, Pérez B. Pathogenic variants of DNAJC12 and evaluation of the encoded cochaperone as a genetic modifier of hyperphenylalaninemia. Hum Mutat 2020; 41:1329-1338. [PMID: 32333439 DOI: 10.1002/humu.24026] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 12/30/2019] [Revised: 03/18/2020] [Accepted: 04/17/2020] [Indexed: 12/26/2022]
Abstract
Biallelic variants of the gene DNAJC12, which encodes a cochaperone, were recently described in patients with hyperphenylalaninemia (HPA). This paper reports the retrospective genetic analysis of a cohort of unsolved cases of HPA. Biallelic variants of DNAJC12 were identified in 20 patients (generally neurologically asymptomatic) previously diagnosed with phenylalanine hydroxylase (PAH) deficiency (phenylketonuria [PKU]). Further, mutations of DNAJC12 were identified in four carriers of a pathogenic variant of PAH. The genetic spectrum of DNAJC12 in the present patients included four new variants, two intronic changes c.298-2A>C and c.502+1G>C, presumably affecting the splicing process, and two exonic changes c.309G>T (p.Trp103Cys) and c.524G>A (p.Trp175Ter), classified as variants of unknown clinical significance (VUS). The variant p.Trp175Ter was detected in 83% of the mutant alleles, with 14 cases homozygous, and was present in 0.3% of a Spanish control population. Functional analysis indicated a significant reduction in PAH and its activity, reduced tyrosine hydroxylase stability, but no effect on tryptophan hydroxylase 2 stability, classifying the two VUS as pathogenic variants. Additionally, the effect of the overexpression of DNAJC12 on some destabilizing PAH mutations was examined and a mutation-specific effect on stabilization was detected suggesting that the proteostasis network could be a genetic modifier of PAH deficiency and a potential target for developing mutation-specific treatments for PKU.
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Affiliation(s)
- Diana Gallego
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Fátima Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Alejandra Gámez
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Margarita Castro
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rosa Navarrete
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Obdulia Sanchez-Lijarcio
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Isidro Vitoria
- Unidad de Nutrición y Metabolopatías, Hospital Universitario La Fe, Valencia, Spain
| | | | - Amaya Belanger-Quintana
- Unidad de Enfermedades Metabólicas Congénitas, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Ana Morais
- Unidad de Nutrición Infantil y Enfermedades Metabólicas, Hospital Universitario La Paz, Madrid, Spain
| | - Consuelo Pedrón-Giner
- Unidad de Gastroenterología y Nutrición, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Inmaculada García
- Unidad de Enfermedades Metabólicas, Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Jaume Campistol
- Unidad de Enfermedades Metabólicas Congénitas, Institut de Recerca and Hospital Universitario Sant Joan de Déu, Barcelona, Spain
| | - Rafael Artuch
- Unidad de Enfermedades Metabólicas Congénitas, Institut de Recerca and Hospital Universitario Sant Joan de Déu, Barcelona, Spain
| | | | | | - David Gil
- Unidad de Gastroenterología, Hepatología y Nutrición Pediátrica, Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Raquel Yahyaoui
- Unidad de Metabolopatías Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Lourdes R Desviat
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Magdalena Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
| | - Aurora Martínez
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Universidad Autónoma de Madrid, Madrid, Spain
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Brasil S, Leal F, Vega A, Navarrete R, Ecay MJ, Desviat LR, Riera C, Padilla N, de la Cruz X, Couce ML, Martin-Hernández E, Morais A, Pedrón C, Peña-Quintana L, Rigoldi M, Specola N, de Almeida IT, Vives I, Yahyaoui R, Rodríguez-Pombo P, Ugarte M, Pérez-Cerda C, Merinero B, Pérez B. Improving the diagnosis of cobalamin and related defects by genomic analysis, plus functional and structural assessment of novel variants. Orphanet J Rare Dis 2018; 13:125. [PMID: 30041674 PMCID: PMC6057060 DOI: 10.1186/s13023-018-0862-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 01/18/2018] [Accepted: 06/29/2018] [Indexed: 12/04/2022] Open
Abstract
Background Cellular cobalamin defects are a locus and allelic heterogeneous disorder. The gold standard for coming to genetic diagnoses of cobalamin defects has for some time been gene-by-gene Sanger sequencing of individual DNA fragments. Enzymatic and cellular methods are employed before such sequencing to help in the selection of the gene defects to be sought, but this is time-consuming and laborious. Furthermore some cases remain undiagnosed because no biochemical methods have been available to test for cobalamin absorption and transport defects. Results This paper reports the use of massive parallel sequencing of DNA (exome analysis) for the accurate and rapid genetic diagnosis of cobalamin-related defects in a cohort of affected patients. The method was first validated in an initial cohort with different cobalamin defects. Mendelian segregation, the frequency of mutations, and the comprehensive structural and functional analysis of gene variants, identified disease-causing mutations in 12 genes involved in the absorption and synthesis of active cofactors of vitamin B12 (22 cases), and in the non-cobalamin metabolism-related genes ACSF3 (in four biochemically misdiagnosed patients) and SUCLA2 (in one patient with an unusual presentation). We have identified thirteen new variants all classified as pathogenic according to the ACGM recommendation but four were classified as variant likely pathogenic in MUT and SUCLA2. Functional and structural analysis provided evidences to classify them as pathogenic variants. Conclusions The present findings suggest that the technology used is sufficiently sensitive and specific, and the results it provides sufficiently reproducible, to recommend its use as a second-tier test after the biochemical detection of cobalamin disorder markers in the first days of life. However, for accurate diagnoses to be made, biochemical and functional tests that allow comprehensive clinical phenotyping are also needed. Electronic supplementary material The online version of this article (10.1186/s13023-018-0862-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sandra Brasil
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Fátima Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Ana Vega
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Rosa Navarrete
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - María Jesús Ecay
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Lourdes R Desviat
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Casandra Riera
- Grupo de Bioinformática Translacional Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Natàlia Padilla
- Grupo de Bioinformática Translacional Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Xavier de la Cruz
- Grupo de Bioinformática Translacional Vall d'Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.,ICREA, Barcelona, Spain
| | - Mari Luz Couce
- Hospital Clínico Universitario de Santiago, Santiago de Compostela, CIBERER, Santiago de Compostela, Spain
| | | | - Ana Morais
- Hospital Universitario La Paz, Madrid, Spain
| | | | - Luis Peña-Quintana
- Hospital Universitario Materno Infantil, CIBEROBN, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Miriam Rigoldi
- Center for Rare Disorders, ASST- Monza, Ospedale San Gerardo, Monza, Italy
| | - Norma Specola
- Unidad de Metabolismo Hospital de Niños de La Plata, La Plata, Argentina
| | | | | | - Raquel Yahyaoui
- Hospital Universitario Regional de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - Pilar Rodríguez-Pombo
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Magdalena Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Celia Pérez-Cerda
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Begoña Merinero
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular, Universidad Autónoma de Madrid, CIBERER, IdiPAZ, Madrid, Spain.
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Costa E, Lopes-Aguiar L, Nogueira G, Lima T, Liutti V, Leal F, Santos V, Rinck-Junior J, Lourenço G, Lima C. CASP9 c.-1339A>G and CASP3 c.-1191A>G polymorphisms in susceptibility and outcome of head and neck squamous cell carcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx374.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Merinero B, Alcaide P, Martín-Hernández E, Morais A, García-Silva MT, Quijada-Fraile P, Pedrón-Giner C, Dulin E, Yahyaoui R, Egea JM, Belanger-Quintana A, Blasco-Alonso J, Fernandez Ruano ML, Besga B, Ferrer-López I, Leal F, Ugarte M, Ruiz-Sala P, Pérez B, Pérez-Cerdá C. Four Years' Experience in the Diagnosis of Very Long-Chain Acyl-CoA Dehydrogenase Deficiency in Infants Detected in Three Spanish Newborn Screening Centers. JIMD Rep 2017; 39:63-74. [PMID: 28755359 DOI: 10.1007/8904_2017_40] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 06/08/2017] [Accepted: 06/15/2017] [Indexed: 12/13/2022] Open
Abstract
Identification of very long-chain acyl-CoA dehydrogenase deficiency is possible in the expanded newborn screening (NBS) due to the increase in tetradecenoylcarnitine (C14:1) and in the C14:1/C2, C14:1/C16, C14:1/C12:1 ratios detected in dried blood spots. Nevertheless, different confirmatory tests must be performed to confirm the final diagnosis. We have revised the NBS results and the results of the confirmatory tests (plasma acylcarnitine profiles, molecular findings, and lymphocytes VLCAD activity) for 36 cases detected in three Spanish NBS centers during 4 years, correlating these with the clinical outcome and treatment. Our aim was to distinguish unambiguously true cases from disease carriers in order to obtain useful diagnostic information for clinicians that can be applied in the follow-up of neonates identified by NBS.Increases in C14:1 and of the different ratios, the presence of two pathogenic mutations, and deficient enzyme activity in lymphocytes (<12% of the intra-assay control) identified 12 true-positive cases. These cases were given nutritional therapy and all of them are asymptomatic, except one. Seventeen individuals were considered disease carriers based on the mild increase in plasma C14:1, in conjunction with the presence of only one mutation and/or intermediate residual activity (18-57%). In addition, seven cases were classified as false positives, with normal biochemical parameters and no mutations in the exonic region of ACADVL. All these carriers and the false positive cases remained asymptomatic. The combined evaluation of the acylcarnitine profiles, genetic results, and residual enzyme activities have proven useful to definitively classify individuals with suspected VLCAD deficiency into true-positive cases and carriers, and to decide which cases need treatment.
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Affiliation(s)
- B Merinero
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain.
| | - P Alcaide
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
| | - E Martín-Hernández
- Departamento de Pediatría, Unidad de Enfermedades Mitocondriales-Metabólicas Hereditarias, Hospital Universitario Doce de Octubre, Universidad Complutense de Madrid, CIBERER, Madrid, Spain
| | - A Morais
- Unidad de Nutrición Infantil y Enfermedades Metabólicas, Hospital Universitario Infantil La Paz, Madrid, Spain
| | - M T García-Silva
- Departamento de Pediatría, Unidad de Enfermedades Mitocondriales-Metabólicas Hereditarias, Hospital Universitario Doce de Octubre, Universidad Complutense de Madrid, CIBERER, Madrid, Spain
| | - P Quijada-Fraile
- Departamento de Pediatría, Unidad de Enfermedades Mitocondriales-Metabólicas Hereditarias, Hospital Universitario Doce de Octubre, Universidad Complutense de Madrid, CIBERER, Madrid, Spain
| | - C Pedrón-Giner
- Sección de Gastroenterología y Nutrición, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - E Dulin
- Laboratorio de Cribado Neonatal, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - R Yahyaoui
- Laboratorio de Metabolopatías, Hospital Regional de Málaga, Instituto de Investigación Biomédica de Málaga (IBIMA), Málaga, Spain
| | - J M Egea
- Centro de Bioquímica y Genética Clínica, Unidad de Metabolopatías, Hospital General Universitario Virgen de la Arrixaca, Murcia, Spain
| | - A Belanger-Quintana
- Unidad de Enfermedades Metabólicas, Servicio de Pediatría, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J Blasco-Alonso
- Sección de Gastroenterología y Nutrición Pediátrica, Hospital Regional de Málaga, Málaga, Spain
| | - M L Fernandez Ruano
- Laboratorio de Cribado Neonatal, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - B Besga
- Laboratorio de Cribado Neonatal, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - I Ferrer-López
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
| | - F Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
| | - M Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
| | - P Ruiz-Sala
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
| | - B Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
| | - C Pérez-Cerdá
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), IdiPAZ, Madrid, Spain
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Richard E, Brasil S, Leal F, Navarrete R, Vega A, Ecay MJ, Desviat LR, Pérez-Cerda C, Ugarte M, Merinero B, Pérez B. Isolated and Combined Remethylation Disorders. Journal of Inborn Errors of Metabolism and Screening 2017. [DOI: 10.1177/2326409816685732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Eva Richard
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Sandra Brasil
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Fátima Leal
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Rosa Navarrete
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Ana Vega
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - María Jesús Ecay
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Lourdes R. Desviat
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Celia Pérez-Cerda
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Magdalena Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Begoña Merinero
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
| | - Belén Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- IdiPAZ, Madrid, Spain
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Brasil S, Richard E, Jorge-Finnigan A, Leal F, Merinero B, Banerjee R, Desviat LR, Ugarte M, Pérez B. Methylmalonic aciduria cblB type: characterization of two novel mutations and mitochondrial dysfunction studies. Clin Genet 2014; 87:576-81. [PMID: 24813872 DOI: 10.1111/cge.12426] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 02/07/2014] [Revised: 05/08/2014] [Accepted: 05/08/2014] [Indexed: 10/25/2022]
Abstract
Methylmalonic aciduria (MMA) cblB type is caused by mutations in the MMAB gene, which codes for the enzyme adenosine triphosphate (ATP): cobalamin adenosyltransferase (ATR). This study reports differences in the metabolic and disease outcomes of two pairs of siblings with MMA cblB type, respectively harbouring the novel changes p.His183Leu/p.Arg190dup (P1 and P2) and the previously described mutations p.Ile96Thr/p.Ser174fs (P3 and P4). Expression analysis showed p.His183Leu and p.Arg190dup to be destabilizing mutations. Both were associated with reduced ATR stability and a shorter half-life than wild-type ATR. Analysis of several parameters related to oxidative stress and mitochondrial function showed an increase in reactive oxygen species (ROS) content, a decrease in mitochondrial respiration and changes in mitochondria morphology and structure in patient-derived fibroblasts compared to control cells. The impairment in energy production and the presence of oxidative stress and fission of the mitochondrial reticulum suggested mitochondrial dysfunction in cblB patients' fibroblasts. The recovery of mitochondrial function should be a goal in efforts to improve the clinical outcome of MMA cblB type.
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Affiliation(s)
- S Brasil
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain; Instituto de Investigación Biomédica, IDIPaz, Madrid, Spain; Metabolism & Genetics Group, Research Institute for Medicines and Pharmaceuticals Sciences (iMed.UL), Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal
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Medina E, Lüttge U, Leal F, Ziegler H. Carbon and Hydrogen Isotope Ratios in Bromeliads Growing under Different Light Environments in Natural Conditions. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/j.1438-8677.1991.tb00192.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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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Prado M, Leal F, Simão R, Gusman H, Prado M. Effect of QMix with ultrasonic irrigation in smear layer removal. Dent Mater 2014. [DOI: 10.1016/j.dental.2014.08.246] [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: 10/24/2022]
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Calhaz-Jorge C, Cordeiro I, Leal F, Carvalho M, Soares A. Obesity and implantation rate in ART. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1713] [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: 10/26/2022]
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Gaumet V, Denis C, Leal F, Madesclaire M, Zaitsev V. [(2 R,3 R)-3-(4-Nitrophenyl)aziridin-2-yl]methanol monohydrate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o927. [PMID: 23795095 PMCID: PMC3685076 DOI: 10.1107/s1600536813013391] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 05/15/2013] [Indexed: 11/16/2022]
Abstract
The title monohydrate, C9H10N2O3·H2O, contains an aziridine ring including two contiguous stereocenters, both of which exhibit an R configuration. The methylhydroxy and nitrophenyl groups are cis-disposed about the aziridine ring. The mean plane of the benzene ring is tilted to the aziridine ring by 66.65 (8)°. The nitro group is nearly coplanar with the benzene ring [dihedral angle = 2.5 (2)°]. In the crystal, the components are linked by N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds, generating supramolecular layers parallel to (001).
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De-Deus G, Brandão MC, Leal F, Reis C, Souza EM, Luna AS, Paciornik S, Fidel S. Lack of correlation between sealer penetration into dentinal tubules and sealability in nonbonded root fillings. Int Endod J 2012; 45:642-51. [DOI: 10.1111/j.1365-2591.2012.02023.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Furia GU, Kostelijk EH, Vergouw CG, Lee H, Lee S, Park D, Kang H, Lim C, Yang K, Lee S, Lim C, Park Y, Shin M, Yang K, Lee H, Beyhan Z, Fisch JD, Sher G, Keskintepe L, VerMilyea MD, Anthony JT, Graham JR, Tucker MJ, Tucker MJ, Freour T, Lattes S, Lammers J, Mansour W, Jean M, Barriere P, El Danasouri I, Gagsteiger F, Rinaldi L, Selman H, Antonova I, Milachich T, Valkova L, Shterev A, Barcroft J, Dayoub N, Thong J, Abdel Reda H, Khalaf Y, El Touky T, Cabry R, Brzakowski R, Lourdel E, Brasseur F, Copin H, Merviel P, Yamada M, Takanashi K, Hamatani T, Akutsu H, Fukunaga T, Inoue O, Ogawa S, Sugawara K, Okumura N, Chikazawa N, Kuji N, Umezawa A, Tomita M, Yoshimura Y, Van der Jeught M, Ghimire S, O'Leary T, Lierman S, Deforce D, Chuva de Sousa Lopes S, Heindryckx B, De Sutter P, Herrero J, Tejera A, De los Santos MJ, Castello D, Romero JL, Meseguer M, Barriere P, Lammers J, Lattes S, Leperlier F, Mirallie S, Jean M, Freour T, Schats R, Al-Nofal M, Vergouw CG, Lens JW, Rooth H, Kostelijk EH, Hompes PG, Lambalk CB, Hreinsson J, Karlstrom PO, Wanggren K, Lundqvist M, Vahabi Z, Eftekhari-Yazdi P, Dalman A, Ebrahimi B, Daneshzadeh MT, Rajabpour Niknam M, Choi EG, Rho YH, Oh DS, Park LS, Cheon HS, Lee CS, Kong IK, Lee SC, Liebenthron J, Montag M, Koster M, Toth B, Reinsberg J, van der Ven H, Strowitzki T, Morita H, Hirosawa T, Watanabe S, Wada T, Kamihata M, Kuwahata A, Ochi M, Horiuchi T, Fatemeh H, Eftekhari-Yazdi P, Karimian L, Fazel M, Fouladi H, Johansson L, Ruttanajit T, Chanchamroen S, Sopaboon P, Seweewanlop S, Sawakwongpra K, Jindasri P, Jantanalapruek T, Charoonchip K, Vajta G, Quangkananurug W, Yi G, Jo JW, Jee BC, Suh CS, Kim SH, Zhang Y, Zhao HJ, Cui YG, Gao C, Gao LL, Liu JY, Sozen E, Buluc B, Vicdan K, Akarsu C, Tuncay G, Hambiliki F, Bungum M, Agapitou K, Makrakis E, Liarmakopoulou S, Anagnostopoulou C, Moustakarias T, Giannaris D, Wang J, Andonov M, Linara E, Charleson C, Ahuja KK, Ozsoy S, Morris MB, Day ML, Cobo A, Castello D, Viloria T, Campos P, Vallejo B, Remohi J, Roldan M, Perez-Cano I, Cruz M, Martinez M, Gadea B, Munoz M, Garrido N, Meseguer M, Mesut N, Ciray HN, Mesut A, Isler A, Bahceci M, Munoz M, Fortuno S, Legidos V, Muela L, Roldan M, Galindo N, Cruz M, Meseguer M, Gunasheela S, Gunasheela D, Ueno S, Uchiyama K, Kondo M, Ito M, Kato K, Takehara Y, Kato O, Edgar DH, Krapez JA, Bacer Kermavner L, Virant-Klun I, Pinter B, Tomazevic T, Vrtacnik-Bokal E, Lee SG, Kang SM, Lee SW, Jeong HJ, Lee YC, Lim JH, Bochev I, Valkova L, Kyurkchiev S, Shterev A, Wilding M, Coppola G, Di Matteo L, Dale B, Hormann-Kropfl M, Kastelic D, Montag M, Schenk M, Fourati Ben Mustapha S, Khrouf M, Braham M, Kallel L, Elloumi H, Merdassi G, Chaker A, Ben Meftah M, Zhioua F, Zhioua A, Kocent J, Neri QV, Rosenwaks Z, Palermo GD, Best L, Campbell A, Fishel S, Calimlioglu N, Sahin G, Akdogan A, Susamci T, Bilgin M, Goker ENT, Tavmergen E, Cantatore C, Ding J, Depalo R, Smith GD, Kasapi E, Panagiotidis Y, Papatheodorou A, Goudakou M, Pasadaki T, Nikolettos N, Asimakopoulos B, Prapas Y, Soydan E, Gulebenzer G, Karatekelioglu E, Budak E, Pehlivan Budak T, Alegretti J, Cuzzi J, Negrao PM, Moraes MP, Bueno MB, Serafini P, Motta ELA, Elaimi A, Harper JC, Stecher A, Baborova P, Wirleitner B, Schwerda D, Vanderzwalmen P, Zech NH, Stanic P, Hlavati V, Gelo N, Pavicic-Baldani D, Sprem-Goldstajn M, Radakovic B, Kasum M, Strelec M, Simunic V, Vrcic H, Khan I, Urich M, Abozaid T, Ullah K, Abuzeid M, Fakih M, Shamma N, Ayers J, Ashraf M, Milik S, Pirkevi C, Atayurt Z, Yazici S, Yelke H, Kahraman S, Dal Canto M, Coticchio G, Brambillasca F, Mignini Renzini M, Novara P, Maragno L, Karagouga G, De Ponti E, Fadini R, Resta S, Magli MC, Cavallini G, Muzzonigro F, Ferraretti AP, Gianaroli L, Barberi M, Orlando G, Sciajno R, Serrao L, Fava L, Preti S, Bonu MA, Borini A, Varras M, Polonifi A, Mantzourani M, Mavrogianni D, Stefanidis K, Griva T, Bletsa R, Dinopoulou V, Drakakis P, Loutradis D, Campbell A, Hickman CFL, Duffy S, Bowman N, Gardner K, Fishel S, Sati L, Zeiss C, Demir R, McGrath J, Yelke H, Atayurt Z, Yildiz S, Unal S, Kumtepe Y, Kahraman S, Atayurt Z, Yelke H, Unal S, Kumtepe Y, Kahraman S, Aljaser F, Hernandez J, Tomlinson M, Campbell B, Fosas N, Redondo Ania M, Marina F, Molfino F, Martin P, Perez N, Carrasco A, Garcia N, Gonzalez S, Marina S, Redondo Ania M, Marina F, Molfino F, Fosas N, Martin P, Perez N, Carrasco A, Garcia N, Gonzalez S, Marina S, Scaruffi P, Stigliani S, Tonini GP, Venturini PL, Anserini P, Guglielmo MC, Coticchio G, Albertini DF, Dal Canto M, Brambillasca F, Lain M, Caliari I, Mignini Renzini M, Fadini R, Oikonomou Z, Chatzimeletiou K, Sioga A, Oikonomou L, Kolibianakis E, Tarlatzis B, Nottola SA, Bianchi V, Lorenzo C, Maione M, Macchiarelli G, Borini A, Gomez E, Gil MA, Sanchez-Osorio J, Maside C, Martinez MJ, Torres I, Rodenas C, Cuello C, Parrilla I, Molina G, Garcia A, Margineda J, Navarro S, Roca J, Martinez EA, Avcil F, Ozden H, Candan ZN, Uslu H, Karaman Y, Gioacchini G, Giorgini E, Carnevali O, Bianchi V, Ferraris P, Vaccari L, Borini A, Choe S, Tae J, Kim C, Lee J, Hwang D, Kim K, Suh C, Jee B, Ozden H, Candan ZN, Avcil F, Uslu H, Karaman Y, Catt SL, Sorenson H, Vela M, Duric V, Chen P, Temple-Smith PD, Pangestu M, Yoshimura T, Fukunaga N, Nagai R, Kitasaka H, Tamura F, Hasegawa N, Kato M, Nakayama K, Takeuchi M, Aoyagi N, Yasue K, Watanabe H, Asano E, Hashiba Y, Asada Y, Iwata K, Yumoto K, Mizoguchi C, Sargent H, Kai Y, Ueda M, Tsuchie Y, Imajo A, Iba Y, Mio Y, Els-Smit CL, Botha MH, Sousa M, Windt-De Beer M, Kruger TF, Muller N, Magli C, Corani G, Giusti A, Castelletti E, Gambardella L, Gianaroli L, Seshadri S, Sunkara SK, El-Toukhy T, Kishi I, Maruyama T, Ohishi M, Akiba Y, Asada H, Konishi Y, Nakano M, Kamei K, Yoshimura Y, Lee JH, Lee KH, Park IH, Sun HG, Kim SG, Kim YY, Choi EM, Lee DH, Chavez SL, Loewke KE, Behr B, Han J, Moussavi F, Reijo Pera RA, Yokota H, Yokota Y, Yokota M, Sato S, Nakagawa M, Sato M, Anazawa I, Araki Y, Virant-Klun I, Knez K, Pozlep B, Tomazevic T, Vrtacnik-Bokal E, Lim JH, Vermilyea MD, Graham JR, Levy MJ, Tucker MJ, Carvalho M, Cordeiro I, Leal F, Aguiar A, Nunes J, Rodrigues C, Soares AP, Sousa S, Calhaz-Jorge C, Braga DPAF, Setti AS, Figueira RCS, Aoki T, Iaconelli A, Borges E, Ozkavukcu S, Sonmezer M, Atabekoglu C, Berker B, Ozmen B, Isbacar S, Ibis E, Menezes J, Lalitkumar PGL, Borg P, Ekwurtzel E, Nordqvist S, Vaegter K, Tristen C, Sjoblom P, Azevedo MC, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Remohi Gimenez J, Cobo A, Castello D, Gamiz P, Albert C, Ferreira RC, Braga DPAF, Figueira RCS, Setti AS, Resende S, Iaconelli A, Borges E, Colturato SS, Braga DPAF, Figueira RCS, Setti AS, Resende S, Iaconelli A, Borges E, Ferrer Buitrago M, Ferrer Robles E, Munoz Soriano P, Ruiz-Jorro M, Calatayud Lliso C, Rawe VY, Wanggren K, Hanrieder J, Hambiliki F, Gulen-Yaldir F, Bergquist J, Stavreus-Evers A, Hreinsson J, Grunskis A, Bazarova A, Dundure I, Fodina V, Brikune J, Lakutins J, Pribenszky C, Cornea M, Reichart A, Uhereczky G, Losonczy E, Ficsor L, Lang Z, Ohgi S, Nakamura C, Hagiwara C, Kawashima M, Yanaihara A, Jones GM, Biba M, Kokkali G, Vaxevanoglou T, Chronopoulou M, Petroutsou K, Sfakianoudis K, Pantos K, Perez-Cano I, Gadea B, Martinez M, Muela L, Cruz M, Galindo N, Munoz M, Garrido N, Romano S, Albricci L, Stoppa M, Cerza C, Sanges F, Fusco S, Capalbo A, Maggiulli R, Ubaldi F, Rienzi L, Ulrick J, Kilani S, Chapman M, Losada C, Ortega I, Pacheco A, Bronet F, Aguilar J, Ojeda M, Taboas E, Perez M, Munoz E, Pellicer A, Meseguer M, Boumela I, Assou S, Haouzi D, Monzo C, Dechaud H, Hamamah S, Dechaud H, Boumela I, Assou S, Haouzi D, Monzo C, Hamamah S, Nakaoka Y, Hashimoto S, Amo A, Yamagata K, Nakano T, Akamatsu Y, Mezawa T, Ohnishi Y, Himeno T, Inoue T, Ito K, Morimoto Y. EMBRYOLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.77] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Engman M, Bystrom B, Varghese S, Lalitkumar PGL, Gemzell-Danielsson K, Romeu C, Urries A, Lierta M, Sanchez Rubio J, Sanz B, Perez I, Casis L, Salerno A, Nazzaro A, Di Iorio L, Bonassisa P, Van Os L, Vink-Ranti CQJ, de Haan-Cramer JH, Rijnders PM, Jansen CAM, Nazzaro A, Salerno A, Marino S, Granato C, Pastore E, Brandes M, Hamilton CJCM, de Bruin JP, Bots RSGM, Nelen WLDM, Kremer JAM, Szkodziak P, Wozniak S, Czuczwar P, Paszkowski T, Wozniak S, Szkodziak P, Czuczwar P, Paszkowski T, Agirregoitia N, Peralta L, Mendoza R, Exposito A, Matorras R, Agirregoitia E, Chuderland D, Ben-Ami I, Kaplan-Kraicer R, Grossman H, Satchi- Fainaro R, Eldar-Boock A, Ron-El R, Shalgi R, Custers IM, Scholten I, Moolenaar LM, Flierman PA, Dessel TJHM, Gerards MH, Cox T, Janssen CAH, van der Veen F, Mol BWJ, Wathlet S, Adriaenssens T, Verheyen G, Coucke W, Smitz J, Feliciani E, Ferraretti AP, Paesano C, Pellizzaro E, Magli MC, Gianaroli L, Hernandez J, Rodriguez-Fuentes A, Garcia-Guzman R, Palumbo A, Radunovic N, Tosic T, Djukic S, Lockwood JC, Adriaenssens T, Wathlet S, Van Landuyt L, Verheyen G, Coucke W, Smitz J, Karayalcin R, Ozcan SARP, Ozyer S, Gurlek B, Kale I, Moraloglu O, Batioglu S, Chaudhury K, Narendra Babu K, Mamata Joshi V, Srivastava S, Chakravarty BN, Viardot-Foucault V, Prasath EB, Tai BC, Chan JKY, Loh SF, Cordeiro I, Leal F, Soares AP, Nunes J, Sousa S, Aguiar A, Carvalho M, Calhaz-Jorge C, Karkanaki A, Piouk A, Katsikis I, Mousatat T, Koiou E, Daskalopoulos GN, Panidis D, Tolikas A, Tsakos E, Gerou S, Prapas Y, Loufopoulos A, Abanto E, Barrenetxea G, Agirregoikoa J, Anarte C, De Pablo JL, Burgos J, Komarovsky D, Friedler S, Gidoni Y, Ben-ami I, Strassburger D, Bern O, Kasterstein E E, Komsky A, Maslansky B, Ron-El R, Raziel A, Fuentes A, Argandona F, Gabler F, Galleguillos A, Torres A, Palomino WA, Gonzalez-Fernandez R, Pena O, Hernandez J, Palumbo A, Avila J, Talebi Chahvar S, Biondini V, Battistoni S, Giannubilo S, Tranquilli AL, Stensen MH, Tanbo T, Storeng R, Abyholm T, Fedorcsak P, Johnson SR, Foster L, Ellis J, Choi JR, Joo JK, Son JB, Lee KS, Helmgaard L, Klein BM, Arce JC, Sanhueza P, Donoso P, Salinas R, Enriquez R, Saez V, Carrasco I, Rios M, Gonzalez P, Macklon N, Guo M, Richardson M, Wilson P, Chian RC, Eapen A, Hrehorcak M, Campbell S, Nargund G, Oron G, Fisch B, Ao A, Freidman O, Zhang XY, Ben-Haroush A, Abir R, Hantisteanu S, Ellenbogen A, Hallak M, Michaeli M, Fainaru O, Maman E, Yong G, Kedem A, Yeruahlmi G, Konopnicki S, Cohen B, Dor J, Hourvitz A, Moshin V, Croitor M, Hotineanu A, Ciorap Z, Rasohin E, Aleyasin A, Agha Hosseini M, Mahdavi A, Safdarian L, Fallahi P, Mohajeri MR, Abbasi M, Esfahani F, Elnashar A, Badawy A, Totongy M, Mohamed H, Mustafa F, Seidman DS, Tadir Y, Goldchmit C, Gilboa Y, Siton A, Mashiach R, Rabinovici J, Yerushalmi GM, Inoue O, Kuji N, Fukunaga T, Ogawa S, Sugawara K, Yamada M, Hamatani T, Hanabusa H, Yoshimura Y, Kato S, Casarini L, La Marca A, Lispi M, Longobardi S, Pignatti E, Simoni M, Halpern G, Braga DPAF, Figueira RCS, Setti AS, Iaconelli Jr. A, Borges Jr. E, Vingris L, Setti AS, Braga DPAF, Figueira RCS, Iaconelli Jr. A, Pasqualotto FF, Borges Jr. E, Collado-Fernandez E, Harris SE, Cotterill M, Elder K, Picton HM, Serra V, Garrido N, Casanova C, Lara C, Remohi J, Bellver J, Steiner HP, Kim CH, You RM, Nah HY, Kang HJ, Kim S, Chae HD, Kang BM, Reig Viader R, Brieno Enriquez MA, Toran N, Cabero L, Giulotto E, Garcia Caldes M, Ruiz-Herrera A, Brieno-Enriquez M, Reig-Viader R, Toran N, Cabero L, Martinez F, Garcia-Caldes M, Velthut A, Zilmer M, Zilmer K, Haller T. Kaart E, Karro H, Salumets A, Bromfield JJ, Sheldon IM, Rezacova J, Madar J, Cuchalova L, Fiserova A, Shao R, Billig H. POSTER VIEWING SESSION - FEMALE (IN) FERTILITY. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.82] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Leal F, De-Deus G, Brandão C, Luna AS, Fidel SR, Souza EM. Comparison of the root-end seal provided by bioceramic repair cements and White MTA. Int Endod J 2011; 44:662-8. [DOI: 10.1111/j.1365-2591.2011.01871.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Richard E, Jorge-Finnigan A, Garcia-Villoria J, Merinero B, Desviat LR, Gort L, Briones P, Leal F, Pérez-Cerdá C, Ribes A, Ugarte M, Pérez B. Genetic and cellular studies of oxidative stress in methylmalonic aciduria (MMA) cobalamin deficiency type C (cblC) with homocystinuria (MMACHC). Hum Mutat 2010; 30:1558-66. [PMID: 19760748 DOI: 10.1002/humu.21107] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Methylmalonic aciduria (MMA) cobalamin deficiency type C (cblC) with homocystinuria (MMACHC) is the most frequent genetic disorder of vitamin B(12) metabolism. The aim of this work was to identify the mutational spectrum in a cohort of cblC-affected patients and the analysis of the cellular oxidative stress and apoptosis processes, in the presence or absence of vitamin B(12). The mutational spectrum includes nine previously described mutations: c.3G>A (p.M1L), c.217C>T (p.R73X), c.271dupA (p.R91KfsX14), c.331C>T (p.R111X), c.394C>T (p.R132X), c.457C>T (p.R153X), c.481C>T (p.R161X), c.565C>A (p.R189S), and c.615C>G (p.Y205X), and two novel changes, c.90G>A (p.W30X) and c.81+2T>G (IVS1+2T>G). The most frequent change was the known c.271dupA mutation, which accounts for 85% of the mutant alleles characterized in this cohort of patients. Owing to its high frequency, a real-time PCR and subsequent high-resolution melting (HRM) analysis for this mutation has been established for diagnostic purposes. All cell lines studied presented a significant increase of intracellular reactive oxygen species (ROS) content, and also a high rate of apoptosis, suggesting that elevated ROS levels might induce apoptosis in cblC patients. In addition, ROS levels decreased in hydroxocobalamin-incubated cells, indicating that cobalamin might either directly or indirectly act as a scavenger of ROS. ROS production might be considered as a phenotypic modifier in cblC patients, and cobalamin supplementation or additional antioxidant drugs might suppress apoptosis and prevent cellular damage in these patients.
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Affiliation(s)
- Eva Richard
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-Severo Ochoa (SO) Universidad Autónoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid, Spain
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Dahri S, Desviat LR, Pérez B, Leal F, Ugarte M, Chabraoui L. Mutation analysis of phenylketonuria patients from Morocco: high prevalence of mutation G352fsdelG and detection of a novel mutation p.K85X. Clin Biochem 2009; 43:76-81. [PMID: 19786003 DOI: 10.1016/j.clinbiochem.2009.09.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Revised: 09/15/2009] [Accepted: 09/16/2009] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The knowledge of the molecular basis of the Phenylketonuria (PKU, MIM# 261600) in different countries provides relevant information for undertaking specific and rational mutation detection strategies in each population and for the implementation of adequate dietary and cofactor treatment. There are no data available in Moroccan population. DESIGN AND METHODS In this work we describe the genetic analysis by mutation scanning using denaturing gradient gel electrophoresis (DGGE) and subsequent direct sequencing of 20 different PKU families from Morocco. We have also included the study of 7 Moroccan PKU patients living in Spain detected by the Spanish newborn screening program. RESULTS The mutational spectrum in the first sample included eight different changes, one of them, p.K85X, was novel. The most common mutation was the frame shift change p.G352fsdelG identified in 62.5% of the mutant chromosomes studied. Other changes (p.R176X, IVS10nt-11 g>a, p.W120X, p.A165T, p.R243X and p.R243Q) were identified, respectively, in 2 or 3 mutant alleles. All detected mutations were severe according to the classical phenotype of the patients. In the 7 patients living in Spain we have detected 4 severe mutations (p.G352fs, p.R176X, Y198fs and Exon3del) and also milder changes such as p.A403V, p.S196T, p.D145V and p.R408Q detected in 3 mild hyperphenylalaninemia (MHP) patients and a novel p.L258P found in a mild PKU patient. CONCLUSION The results provide important information on the distribution of PKU mutations in this Mediterranean area gaining insight into the genetic epidemiology of the disease.
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Affiliation(s)
- Saloua Dahri
- Service de Biochimie, Centre d'Etudes des Maladies Héréditaires du Métabolisme, Hôpital d'Enfants de Rabat et Faculté de Médecine et de Pharmacie, Université Mohammed V Souissi, Rabat, Moroccco
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Leal F, Rodrigues A, Fernandes D, Nunes F, Cipriano J, Ramos J, Teixeira S, Vieira S, Carvalho L, Pinto-Carnide O. IN VITRO MULTIPLICATION OF CALENDULA ARVENSIS FOR SECONDARY METABOLITES EXTRACTION. ACTA ACUST UNITED AC 2009. [DOI: 10.17660/actahortic.2009.812.33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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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Martínez-Frías ML, Bermejo E, Pérez B, Desviat LR, Castro M, Leal F, Mansilla E, Martínez-Fernández ML, Rodríguez-Pinilla E, Rodríguez L, Ugarte M. [Analysis of the frequencies of genotype combinations of 4 polymorphisms of genes acting on the folate cycle in the Spanish population]. Med Clin (Barc) 2008; 131:81-8. [PMID: 18590621 DOI: 10.1157/13124010] [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: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Studies on different populations have shown a great variability of the frequencies of different polymorphisms in genes acting in the folate cycle. The present study was aimed to analyze the frequency in the Spanish population of each genotype combination of four polymorphisms, one of them -1561C-T of the glutamate carboxypeptidase II (GCPII) gene- being the first time that is studied in Spain. The study included a meta-analysis of the published data. SUBJECTS AND METHOD Using the Spanish Collaborative Study of Congenital Malformations (ECEMC) Network, blood samples of 190 mother-child couples with newborns without any congenital defect, were obtained from 15 Spanish autonomous regions. The study polymorphisms were the 677C-T and 1298A-C polymorphisms of the methylenetetrahydrofolate reductase (MTHFR), the 66A-G of the methionine synthase reductase (MTRR), and the 1561C-T polymorphism of the GCPII gene. To estimate the range for the population frequencies, 99% confidence intervals were calculated. RESULTS The frequencies observed in our country were significantly different from others, being similar to those obtained in countries of the Mediterranean European area. The 1561C-T polymorphism of the GCPII gene has a frequency in Spain of 5.11%, which is also similar to the values observed in France (5%) and in Italy (6%). On the other hand, the frequency of the genotypes CTCC, TTAC is quite few, while the genotype TTCC was not observed in any mother or infants. A meta-analysis was performed for a big sample (23,612 individuals) and the results showed that with a 99% of probability the values for the genotype combinations CTCC, TTAC, and TTCC were within 0.10-0.24; 0.20-0.36; and 0.003-0.05, respectively. CONCLUSIONS Our results are important to further analyze the relationship with some health problems and individual susceptibilities. Indeed, considering the published observations of the structure and function of the MTHFR enzyme, it is understandable that those genotype combinations that are quite little frequent, may be related to the embryo-fetal viability, and to the life style of each population.
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Affiliation(s)
- María Luisa Martínez-Frías
- Centro de Investigación sobre Anomalías Congénitas (CIAC), Instituto de Salud Carlos III (ISCIII), Ministerio de Sanidad y Consumo, Madrid, España.
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González JE, Rodríguez MD, Rodeiro I, Morffi J, Guerra E, Leal F, García H, Goicochea E, Guerrero S, Garrido G, Delgado R, Nuñez-Selles AJ. Lack of in vivo embryotoxic and genotoxic activities of orally administered stem bark aqueous extract of Mangifera indica L. (Vimang). Food Chem Toxicol 2007; 45:2526-32. [PMID: 17686561 DOI: 10.1016/j.fct.2007.05.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2007] [Revised: 05/09/2007] [Accepted: 05/23/2007] [Indexed: 11/21/2022]
Abstract
Mango (Mangifera indica L.) stem bark aqueous extract (MSBE) is a new natural product with antioxidant, anti-inflammatory and immunomodulatory effects known by the brand name of its formulations as Vimang. Previously, the oral toxicity studies of the extract showed a low toxicity potential up to 2000 mg/kg. This work reports the results about teratogenic and genotoxicologic studies of MSBE. For embryotoxicity study, MSBE (20, 200, or 2000 mg/kg/day) was given to Sprague-Dawley rats by gavage on days 6-15 of gestation. For genotoxicity, MSBE was administered three times during 48 h to NMRI mice. Cyclophosphamide (50 mg/kg) was used as a positive control. No maternal or developmental toxicities were observed when the rats were killed on day 20th. The maternal body-weight gain was not affected. No dose-related effects were observed in implantations, fetal viability or external fetal development. Skeletal and visceral development was similar among fetuses from all groups. No genotoxicity was observed in bone marrow erythrocytes and liver cells after administration. MSBE appears to be neither embryotoxic nor genotoxic as measured by bone marrow cytogenetics in rodents.
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Affiliation(s)
- J E González
- Laboratory of Radiobiology, Center for Radiation Protection and Hygiene, Havana, Cuba
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Leal F, Loureiro J, Rodriguez E, Pais MS, Santos C, Pinto-Carnide O. Nuclear DNA content of Vitis vinifera cultivars and ploidy level analyses of somatic embryo-derived plants obtained from anther culture. Plant Cell Rep 2006; 25:978-85. [PMID: 16614867 DOI: 10.1007/s00299-006-0162-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Revised: 03/02/2006] [Accepted: 03/25/2006] [Indexed: 05/08/2023]
Abstract
Flow cytometry was employed to determine the ploidy level of Vitis vinifera L. somatic embryo-derived plants obtained from anther culture. Only one among the 41 analysed plants (2.4%) presented somaclonal variation (tetraploidy); the other plants were diploid. No significant differences (P<or=0.05) were detected between diploid and parental field plants. No haploid or aneuploid plants were observed. The nuclear DNA content of nine V. vinifera cultivars was also estimated using flow cytometry. A non-significant variation was found among the cultivars, with DNA content ranging from 1.17 pg/2C (cv. 'Tinta Barroca' and 'Viosinho') to 1.26 pg/2C (cv. 'Cabernet Sauvignon'). These results and previous studies on other Vitis species suggest that Vitis genome is stable with regard to nuclear DNA content.
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Affiliation(s)
- F Leal
- Center of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
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Martínez-Frías ML, Pérez B, Desviat LR, Castro M, Leal F, Rodríguez L, Mansilla E, Martínez-Fernández ML, Bermejo E, Rodríguez-Pinilla E, Prieto D, Ugarte M. Maternal polymorphisms 677C-T and 1298A-C of MTHFR, and 66A-G MTRR genes: is there any relationship between polymorphisms of the folate pathway, maternal homocysteine levels, and the risk for having a child with Down syndrome? Am J Med Genet A 2006; 140:987-97. [PMID: 16575899 DOI: 10.1002/ajmg.a.31203] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [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: 11/08/2022]
Abstract
This study was aimed at analyzing the effect of mutations in three non-synonymous SNP genes (677C > T and 1298A > C of the methylenetetrahydrofolate reductase (MTHFR) gene, and 66A > G in the MTRR gene) on total plasmatic homocysteine (Hcy), in 91 mothers of Down syndrome (DS) infants and 90 control mothers. The comparison of both groups of mothers is a new way to determine if those mutations and their interactions increase the risk for DS. Material came from the case-control network of the Spanish Collaborative Study of Congenital Malformations (ECEMC). Using a general lineal model in a backwards step, we performed the analyses including the different mutations, maternal age, the fact that each mother had a DS or a control infant, and all possible interactions of these variables, in the models, being maternal Hcy the continuous dependent variable. In another model, maternal folic acid intake during the third trimester of pregnancy was added. The results from both models were essentially the same: Hcy levels variability differs from case mothers to control ones, the presence of the MTHFR1298A > C polymorphism also affects significantly the Hcy variance, as it does the statistical interaction between the mutations MTRR66A > G and MTHFR1298A > C in the mother. In this sense, the interaction between different polymorphisms may totally modify their individual effects, and some of those effects are different in mothers of DS children and in controls' mothers. For instance, only two mutations in MTRR66 (GGAA) in mothers of control infants increase the reference maternal Hcy level in 4.66 units, and the individual effect of the genotype with only two mutations in the MTHFR1298 gene (AACC) increases the reference Hcy level in 12.74 units. However, the presence of the four mutations (GGCC) interacts giving a statistically significant decrease in 6.00 units in the level of Hcy in control mothers. On the contrary, in mothers of DS infants, the sole presence of two mutations in one of these two genes decreases the levels of Hcy (-2.31 units for GGAA genotype, and -3.43 units for AACC genotype), while the presence of the four mutations (GGCC) increases Hcy in 9.53 units. Taking into consideration that in the one-carbon metabolism cystathionine beta-synthase (CBS) catalyzes Hcy in an irreversible way, and that CBS gene is located in chromosome 21, fetuses and infants with DS have functional folate deficiency due to overexpression of CBS. This fact, as well as others influencing Hcy levels (such as nutrients interactions and lifestyle), together with the fetal genotype, suggest that their relationship with DS could be through an effect on fetal survival up to birth. Three possible mechanisms are considered by evaluating the results in the light of the present knowledge on cytology and molecular biology.
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Affiliation(s)
- María-Luisa Martínez-Frías
- ECEMC, Centro de Investigación sobre Anomalías Congénitas, Instituto de Salud Carlos III, Ministerio de Sanidad y Consumo, Madrid, Spain.
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Weber V, Coudert P, Duroux E, Leal F, Couquelet J, Madesclaire M. Synthesis and in vitro studies of pyrone derivatives as scavengers of active oxygen species. Arzneimittelforschung 2001; 51:877-84. [PMID: 11765588 DOI: 10.1055/s-0031-1300131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The antioxidant properties of eleven alpha-pyrones and four gamma-pyrones were evaluated by means of three different tests: reduction of the stable free radical, 1,1-diphenyl-2-picrylhydrazyl (DPPH), superoxide anion scavenging assay and lipid peroxidation assay. In the DPPH test, 6-aryl-5,6-dihydro-4-hydroxypyran-2-ones (3) and 4-hydroxypyran-2-one (5f) were the most active derivatives with IC50 values ranging from 36.7 to 394 mumol/l. Potent superoxide anion scavenging properties appeared in derivatives possessing phenol moieties. Thus phenolic pyrones 5e and 5f exhibited a noteworthy activity (IC50 = 0.180 and 0.488 mmol/l, respectively) when reference compound, ascorbic acid, demonstrated only 24% inhibition at a concentration of 1 mg/ml. In addition derivative 5f significantly inhibited the Fe2+/ADP/ascorbate-induced lipid peroxidation of rat liver microsomes with an IC50 value of 0.069 mmol/l. Due to its multiple mechanism of protective action, compound 5f may be useful for the treatment of oxidative tissue injury in human disease.
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Affiliation(s)
- V Weber
- Laboratoire de Chimie Thérapeutique-Groupe de Recherche en Pharmacochimie, Clermont-Ferrand, France
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32
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Hugon B, Rubat C, Coudert P, Leal F, Fialip J, Couquelet J. Synthesis of N-substituted 4,6-dioxo-imidazo[3,4-c] thiazoles and their analgesic activity in mice. J Pharm Pharmacol 2001; 53:1117-23. [PMID: 11518021 DOI: 10.1211/0022357011776504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 10/31/2022]
Abstract
A new series of N-substituted dioxo-imidazo[3,4-c]thiazoles have been prepared and evaluated for their analgesic activity. The structures of these new derivatives were confirmed by lR, 1H NMR and 13C NMR spectra, and by elemental analysis. When administered intraperitoneally to mice all derivatives were devoid of any toxic effect, even at the high dose of 800 mg kg(-1). In the phenylbenzoquinone-induced abdominal constriction test in mice, eight of the nine synthesized compounds exhibited significant antinociceptive properties with ED50 values (50% effective dose) ranging from 46.7 to 104.7 mg kg(-1) intraperitoneally. Further investigation demonstrated that analgesic activity of the most effective derivatives 5e and 5f partly involved opioidergic and/or noradrenergic pathways.
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Affiliation(s)
- B Hugon
- Laboratoire de Chimie Thérapeutique, Faculté de Pharmacie, Université d'Auvergne, Clermont-Ferrand, France
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da Silva LP, Leal F, Santos GC, Amaral JM, Feijóo MJ. [Central nervous system lesions in Adams-Oliver syndrome]. ACTA MEDICA PORT 2001; 14:455-6. [PMID: 11763858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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34
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Pina DG, Shnyrova AV, Gavilanes F, Rodríguez A, Leal F, Roig MG, Sakharov IY, Zhadan GG, Villar E, Shnyrov VL. Thermally induced conformational changes in horseradish peroxidase. Eur J Biochem 2001; 268:120-6. [PMID: 11121111 DOI: 10.1046/j.1432-1033.2001.01855.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Detailed differential scanning calorimetry (DSC), steady-state tryptophan fluorescence and far-UV and visible CD studies, together with enzymatic assays, were carried out to monitor the thermal denaturation of horseradish peroxidase isoenzyme c (HRPc) at pH 3.0. The spectral parameters were complementary to the highly sensitive but integral method of DSC. Thus, changes in far-UV CD corresponded to changes in the overall secondary structure of the enzyme, while that in the Soret region, as well as changes in intrinsic tryptophan fluorescence emission, corresponded to changes in the tertiary structure of the enzyme. The results, supported by data about changes in enzymatic activity with temperature, show that thermally induced transitions for peroxidase are irreversible and strongly dependent upon the scan rate, suggesting that denaturation is under kinetic control. It is shown that the process of HRPc denaturation can be interpreted with sufficient accuracy in terms of the simple kinetic scheme N -->k D where k is a first-order kinetic constant that changes with temperature, as given by the Arrhenius equation; N is the native state, and D is the denatured state. On the basis of this model, the parameters of the Arrhenius equation were calculated.
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Affiliation(s)
- D G Pina
- Departamento de Bioquímica y Biología Molecular, Universidad de Salamanca, Spain
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35
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Pereira-Da-Silva L, Leal F, Santos GC, Videira Amaral JM, Feijóo MJ. Clinical evidence of vascular abnormalities at birth in Adams-Oliver syndrome: report of two further cases. Am J Med Genet 2000; 94:75-6. [PMID: 10982487 DOI: 10.1002/1096-8628(20000904)94:1<75::aid-ajmg15>3.0.co;2-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Since constructional apraxia is often concomitant with brain lesions, the study of constructional tasks in the non-brain-damaged population might be useful in helping to disentangle other causal factors. This paper explores the performance of illiterate individuals (N = 29) as compared to that of semiliterates (N = 21) and literates (N = 23) in order to see the effect of reading and writing abilities on constructional tasks. Each participant was asked to construct 4 figures based upon models having varying degrees of complexity. A global criterion of lack of fidelity and several analytic criteria (related to distortion, rotation, and disarticulation errors) were used to evaluate performance. Although illiterates generally made more errors than semiliterates and semiliterates more than literates, only some of these differences were statistically significant. Significant differences were found for lack of global fidelity and disarticulation errors when all 4 figures were considered together. Subtler data emerged with respect to single figures.
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Affiliation(s)
- E Matute
- Departamento de Estudios en Educación, CUCSH, Universidad de Guadalajara, Mexico.
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38
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Abstract
A novel analysis of coherence using a combination of three criteria (syntactic connexity, pragmatic complexity, and rhetorical well-roundedness) was applied to short narratives produced by a group of 60 Spanish-speaking children of different ages and grades with reading disabilities and compared to those produced by normal children. We posit a scale of 6 degrees of increasing coherence. This feature of children's writing, together with 2 others (viz. number of propositions, or "story points," recovered and number of words employed), was compared to features of children's reading by means of discriminant analysis in relation to age. We show that the combination of age, words read per minute, and degree of coherence achieved an optimal discrimination of the 2 groups.
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Affiliation(s)
- E Matute
- Instituto de Neurociencias, Universidad de Guadalajara, Mexico.
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39
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Abstract
Aspergillus nidulans catalase B (CatB) was purified to homogeneity and characterized as a hydroperoxidase which resembles typical catalases in some physicochemical characteristics: (1) it has an apparent molecular weight of 360000 and is composed of four glycosylated subunits, (2) it has hydrophobic properties as revealed by extractability in ethanol/chloroform and binding to phenyl-Superose, and (3) it has an acidic isoelectric point at pH 3. 5. Also CatB exhibits some distinctive properties, e.g. it is not inhibited by the presence of 2% sodium dodecyl sulfate, 9 M urea or reducing agents. Furthermore, even though CatB does not exhibit any residual peroxidase activity, it is able to retain up to 38% of its initial catalase activity after incubation with the typical catalase inhibitor 3-amino-1,2,4-triazole.
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Affiliation(s)
- J A Calera
- Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
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40
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Abstract
Structural modifications of ascorbic acid by the introduction of lipophilic moieties has led to derivatives with increased stability against thermal and oxidative degradation. Two series of new lipophilic ascorbic analogues were synthesized to obtain antioxidants devoid of autooxidant properties: 4-benzoyl-3-hydroxyfuran-2(5H)-ones (3a-j) and 4-acetyl-5-aryl-3,4-dihydrofuran-2(5H)ones (5a-f). These compounds were submitted to three different tests: reduction of the stable free radical, 1,1-diphenyl-2-picrylhydrazyl (DPPH); superoxide-anion scavenging assay; and lipid-peroxidation assay. Most compounds interacted with DPPH: at a concentration of 5 x 10(-3) M, the reducing activity of 4-benzoyl derivatives, 3c and 3h, was more than 50%; under the same conditions, the rate of inhibition for 4-acetylbutanolides, 5a and 5f, reached 60.6% and 87.3%, respectively; 93.3% inhibition was observed with ascorbic acid. In the superoxide-anion scavenging assay, at a concentration of 1 mg mL(-1), 4-benzoyl derivatives, 3g and 3i, exhibited a good activity, with IC50 (dose resulting in 50% inhibition) values of 1.45 and 1.35 x 10(-3) M, respectively. 4-Acetylbutanolide, 5f, significantly inhibited the Fe2+/ADP/ascorbate-induced lipid peroxidation of rat liver microsomes with an IC50 of 4.9 x 10(-4) M. This study demonstrates that enol functions in the structure of ascorbic acid analogues are not absolutely essential to bring about antioxidant effects.
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Affiliation(s)
- V Weber
- Laboratoire de Chimie Thérapeutique, Groupe de Recherche en Pharmacochimie, Faculté de Pharmacie, Clermont-Ferrand, France
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Abstract
ASPND1 and ASPF2 are immunodominant antigens from Aspergillus nidulans and A. fumigatus, respectively, that are readily synthesized in infections in the human host, as demonstrated by their reactivity with more than 80% of sera from patients with aspergilloma or allergic bronchopulmonary aspergillosis. We demonstrate here that both antigens are exclusively produced under situations of low bioavailability of free Zn2+. Addition of micromolar concentrations of Zn2+ to the culture medium strongly stimulated Aspergillus growth but totally inhibited ASPND1 or ASPF2 production. This effect was specific, since other divalent metals had no effect. Removal of endogenous Zn2+ by a chelator also stimulated ASPND1 production, and the effect was specifically reversed by Zn2+. These results suggest a possible role of these antigens in the survival of the fungus in the lungs.
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Affiliation(s)
- M Segurado
- Departamento de Microbiología y Genética, Universidad de Salamanca, 37007 Salamanca, Spain
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42
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Couquelet J, Madesclaire M, Leal F, Zaitsev VP, Sharipova SK. Regioselectivity in the reaction of paraformaldehyde with (1S,2S)-2-aryl(hetaryl)methylamino-1-(4-nitrophenyl)-1,3-propanediols. Chem Heterocycl Compd (N Y) 1999. [DOI: 10.1007/bf02319337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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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Point D, Coudert P, Leal F, Rubat C, Sautou-Miranda V, Chopineau J, Couquelet J. Antioxidant activity of some ascorbic and cinnamic acids derivatives. Farmaco 1998; 53:85-8. [PMID: 9543730 DOI: 10.1016/s0014-827x(97)00012-8] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Some 4-benzoyl 3-hydroxy furan-2 (5H) ones (3a-d) and 2-amino 3-hydroxymethyl 4-aryl 4-oxo 2-butenoic acids (4a-h) have been synthesized. Compound 3c with an isobutyl substituent in the 5-position of the furan ring was the most effective (IC50 = 8.69 x 10(-4) M) in scavenging the superoxide anion. In vivo, 3c was also protective against reperfusion injury.
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Affiliation(s)
- D Point
- Laboratoire de Pharmacie Clinique et Biotechnique, Faculté de Pharmacie, Clermont-Ferrand, France
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Calera JA, Paris S, Monod M, Hamilton AJ, Debeaupuis JP, Diaquin M, López-Medrano R, Leal F, Latgé JP. Cloning and disruption of the antigenic catalase gene of Aspergillus fumigatus. Infect Immun 1997; 65:4718-24. [PMID: 9353056 PMCID: PMC175677 DOI: 10.1128/iai.65.11.4718-4724.1997] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.8] [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: 02/05/2023] Open
Abstract
Aspergillus fumigatus possesses two catalases (described as fast and slow on the basis of their electrophoretic mobility). The slow catalase has been recognized as a diagnostic antigen for aspergillosis in immunocompetent patients. The antigenic catalase has been purified. The enzyme is a tetrameric protein composed of 90-kDa subunits. The corresponding cat1 gene was cloned, and sequencing data show that the cat1 gene codes for a 728-amino-acid polypeptide. A recombinant protein expressed in Pichia pastoris is enzymatically active and has biochemical and antigenic properties that are similar to those of the wild-type catalase. Molecular experiments reveal that CAT1 contains a signal peptide and a propeptide of 15 and 12 amino acid residues, respectively. cat1-disrupted mutants that were unable to produce the slow catalase were as sensitive to H2O2 and polymorphonuclear cells as the wild-type strain. In addition, there was no difference in pathogenicity between the cat1 mutant and its parental cat1+ strain in a murine model of aspergillosis.
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Affiliation(s)
- J A Calera
- Laboratoire des Aspergillus, Institut Pasteur, Paris, France
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Sergent E, Ferrari D, Leal F. EFFECTS OF POTASIUM NITRATE AND PACLOBUTRAZOL ON FLOWERING INDUCTION AND YIELD OF MANGO (MANGIFERA INDICA L.) CV. HADEN. ACTA ACUST UNITED AC 1997. [DOI: 10.17660/actahortic.1997.455.25] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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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Zhadan GG, Cobaleda C, Jones AL, Leal F, Villar E, Shnyrov VL. Protein involvement in thermally induced structural transitions of pig erythrocyte ghosts. Biochem Mol Biol Int 1997; 42:11-20. [PMID: 9192080 DOI: 10.1080/15216549700202381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Thermal transitions in pig erythrocyte ghosts were studied by differential scanning calorimetry and thermal gel analysis (TGA). Heating of the suspension of pig erythrocyte ghosts induced at least six thermodynamically irreversible transitions. Each of these transitions is believed to be due to a localized structural transition induced by thermal stress. Using TGA and covalent attachment of the anionic transport inhibitor regions in the thermograms corresponding to the heat sorption of some proteins of the pig erythrocyte ghosts were identified.
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Affiliation(s)
- G G Zhadan
- Departamento de Bioquímica y Biología Molecular, Universidad de Salamanca, Spain
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47
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Calera JA, Ovejero MC, López-Medrano R, Segurado M, Puente P, Leal F. Characterization of the Aspergillus nidulans aspnd1 gene demonstrates that the ASPND1 antigen, which it encodes, and several Aspergillus fumigatus immunodominant antigens belong to the same family. Infect Immun 1997; 65:1335-44. [PMID: 9119471 PMCID: PMC175137 DOI: 10.1128/iai.65.4.1335-1344.1997] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [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: 02/04/2023] Open
Abstract
For the first time, an immunodominant Aspergillus nidulans antigen (ASPND1) consistently reactive with serum samples from aspergilloma patients has been purified and characterized, and its coding gene (aspnd1) has been cloned and sequenced. ASPND1 is a glycoprotein with four N-glycosidically-bound sugar chains (around 2.1 kDa each) which are not necessary for reactivity with immune human sera. The polypeptide part is synthesized as a 277-amino-acid precursor of 30.6 kDa that after cleavage of a putative signal peptide of 16 amino acids, affords a mature protein of 261 amino acids with a molecular mass of 29 kDa and a pI of 4.24 (as deduced from the sequence). The ASPND1 protein is 53.1% identical to the AspfII allergen from Aspergillus fumigatus and 48% identical to an unpublished Candida albicans antigen. All of the cysteine residues and most of the glycosylation sites are perfectly conserved in the three proteins, suggesting a similar but yet unknown function. Analysis of the primary structure of the ASPND1 coding gene (aspnd1) has allowed the establishment of a clear relationship between several previously reported A. fumigatus and A. nidulans immunodominant antigens.
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Affiliation(s)
- J A Calera
- Departamento de Microbiología y Genética, Universidad de Salamanca, Spain
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48
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López-Medrano R, Ovejero MC, Calera JA, Puente P, Leal F. Immunoblotting patterns in the serodiagnosis of aspergilloma: antibody response to the 90kDa Aspergillus fumigatus antigen. Eur J Clin Microbiol Infect Dis 1996; 15:146-52. [PMID: 8801087 DOI: 10.1007/bf01591488] [Citation(s) in RCA: 11] [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: 02/02/2023]
Abstract
At present there are no accepted criteria to assess the usefulness of Western blot assays for the serodiagnosis of aspergilloma. An Aspergillus fumigatus cytosolic fraction complex (CFC) composed of four proteins (p90, p60, p40, and p37) has been identified. The usefulness of Western blotting with CFC antigens for the serodiagnosis of aspergilloma was evaluated in 25 patients with well-established diagnoses and in 94 controls. The most consistently reactive antigen was p90 (92% of patients with aspergilloma), followed by p40 (76%) and the entire CFC taken together (76%). With these data, interpretive criteria for positive and negative immunoblots were established, with p90 indicated as a helpful marker of aspergilloma.
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Affiliation(s)
- R López-Medrano
- Departamento de Microbiología y Genética/Instituto de Microbiología Bioquímica, Universidad de Salamanca/C.S.I.C., Spain
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Abstract
Ascorbic acid, present in plasma from humans at concentrations of 50 to 200 mumol/l, has multiple antioxidant properties. Structural modification of this vitamin by the introduction of lipophilic moieties has allowed to the development of ascorbate esters and ethers active as free radical quenchers. Thus, a new series of ascorbic acid analogues possessing one or two aromatic rings was prepared in an attempt to synthesize potent antioxidants with lipophilic properties. Substituted 3-hydroxy furan-2 (5H)-ones and in some cases, dihydrofuro[3,4-b]pyrones were prepared. The synthesized compounds were evaluated for their antioxidant activity in vitro. So, 4-(4-methoxybenzoyl)-3-hydroxy-5-phenylfuran-2(5H)-one 3e (IC50 = 3.06 x 10(-4) M) was found to be the most effective in scavenging the superoxide anion, whereas 4-benzoyl-3-hydroxy-5-(3,4-dimethoxyphenyl)furan- 2(5H)-one 3d (IC50 = 1.38 x 10(-4) M) was the most active in inhibiting, lipid peroxidation.
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Affiliation(s)
- P Coudert
- Laboratoire de Chimie Thérapeutique, Université d'Auvergne, Clermont-Ferrand, France
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Abstract
We have identified, purified, and characterized structurally and functionally a 90-kDa immunodominant antigen associated with the water-soluble fraction of Aspergillus fumigatus. This antigen is recognized by 90.3% of serum samples from patients with aspergilloma and should be considered either by itself or better in combination with other purified antigens as a candidate for developing a standardized immunoassay for the detection of aspergilloma. p90 is a glycoprotein containing at least two two N-linked sugar chains of 2 and 5 kDa, respectively, which are not necessary for its reactivity with aspergilloma serum samples. Using specific anti-p90 rabbit serum, we have demonstrated that under native conditions, p90 exists in oligomeric form and has associated catalase activity. This activity is resistant to extreme temperatures (> 60 degrees C), reducing agents (40 mM dithiothreitol), high concentrations of denaturing agents such as 8 M urea and 8% sodium dodecyl sulfate, and treatments with ethanol-chloroform-water (5:3:10 [vol/vol]) mixtures.
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Affiliation(s)
- R López-Medrano
- Departamento de Microbiología y Genética, Universidad de Salamanca, Consejo Superior de Investigaciones Científica, Spain
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