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Cuesta-Llavona E, Lorca R, Salgado M, García-Lago C, Rodríguez-Reguero J, Rodríguez-López R, Escribano-Hernández V, Peña-Cabia A, Vázquez-Coto D, Pascual I, Coto E, Gómez J. Retrospective variant reclassification and resequencing in hypertrophic cardiomyopathy: a reference unit centre experience. Eur J Prev Cardiol 2024; 31:e38-e41. [PMID: 37821407 DOI: 10.1093/eurjpc/zwad325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/13/2023]
Affiliation(s)
- Elías Cuesta-Llavona
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Laboratorio de Genética, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
| | - Rebeca Lorca
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Departamento de Morfología y Biología Celular, Universidad de Oviedo, C/ Julián Clavería S/N, 33003 Oviedo, Spain
- Unidad de Cardiopatías Familiares, Área del Corazón y Departamento de Genética Molecular, Av Roma S/N, 33011 Oviedo, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORs), Av. de Monforte de Lemos 5, 28029 Madrid, Spain
- Área del Corazón, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
| | - María Salgado
- Área del Corazón, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
| | - Claudia García-Lago
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Laboratorio de Genética, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
| | - Julián Rodríguez-Reguero
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Unidad de Cardiopatías Familiares, Área del Corazón y Departamento de Genética Molecular, Av Roma S/N, 33011 Oviedo, Spain
- Área del Corazón, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
| | - Raquel Rodríguez-López
- Laboratorio de Genética, Servicio Análisis Clínicos, Consorcio Hospital General Universitario de Valencia, Av. de les Tres Creus 2, 46014 Valencia, Spain
| | - Vanesa Escribano-Hernández
- Laboratorio de Genética, Servicio de Análisis Clínicos, Hospital Universitario de La Paz, P.º de la Castellana 261, 28046 Madrid, Spain
| | - Ana Peña-Cabia
- Servicio de Análisis Clínicos, Hospital Virgen de la Luz, C. Hermandad de Donantes de Sangre 1, 16002 Cuenca, Spain
| | - Daniel Vázquez-Coto
- Laboratorio de Genética, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
| | - Isaac Pascual
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Área del Corazón, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
- Departamento de Medicina, Universidad de Oviedo, C/ Julián Clavería S/N, 33003 Oviedo, Spain
| | - Eliecer Coto
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Laboratorio de Genética, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
- Unidad de Cardiopatías Familiares, Área del Corazón y Departamento de Genética Molecular, Av Roma S/N, 33011 Oviedo, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORs), Av. de Monforte de Lemos 5, 28029 Madrid, Spain
- Departamento de Medicina, Universidad de Oviedo, C/ Julián Clavería S/N, 33003 Oviedo, Spain
| | - Juan Gómez
- Instituto de Investigación Sanitaria del Principado de Asturias, ISPA, Eje Cardio-Renal, Av Roma S/N, 33011 Oviedo, Spain
- Laboratorio de Genética, Hospital Universitario Central Asturias, Av Roma S/N, 33011 Oviedo, Spain
- Unidad de Cardiopatías Familiares, Área del Corazón y Departamento de Genética Molecular, Av Roma S/N, 33011 Oviedo, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORs), Av. de Monforte de Lemos 5, 28029 Madrid, Spain
- CIBER-Enfermedades Respiratorias, Av. de Monforte de Lemos 5, 28029 Madrid, Spain
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Fabregat-Cid G, Cedeño DL, Harutyunyan A, Rodríguez-López R, Monsalve-Dolz V, Mínguez-Martí A, Hernández-Cádiz MJ, Escrivá-Matoses N, Villanueva-Pérez V, Asensio Samper JM, De Andrés J, Vallejo R. Effect of Conventional Spinal Cord Stimulation on Serum Protein Profile in Patients With Persistent Spinal Pain Syndrome: A Case-Control Study. Neuromodulation 2023; 26:1441-1449. [PMID: 37516956 DOI: 10.1016/j.neurom.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 04/30/2023] [Accepted: 05/30/2023] [Indexed: 07/31/2023]
Abstract
BACKGROUND Spinal cord stimulation (SCS) provides pain relief for most patients with persistent spinal pain syndrome type 2 (PSPS 2). Evidence is mounting on molecular changes induced by SCS as one of the mechanisms to explain pain improvement. We report the SCS effect on serum protein expression in vivo in patients with PSPS 2. MATERIALS AND METHODS Serum proteins were identified and quantified using mass spectrometry. Proteins with significantly different expression among patients with PSPS 2 relative to controls, responders, and nonresponders to SCS, or significantly modulated by SCS relative to baseline, were identified. Those most correlated with the presence and time course of pain were selected using multivariate discriminant analysis. Bioinformatic tools were used to identify related biological processes. RESULTS Thirty patients with PSPS 2, of whom 23 responded to SCS, were evaluated, together with 14 controls with no pain who also had undergone lumbar spinal surgery. A significant improvement in pain intensity, disability, and quality of life was recorded among responders. Five proteins differed significantly at baseline between patients with PSPS 2 and controls, with three proteins, mostly involved in immune processes and inflammation, being downregulated and two, mostly involved in vitamin metabolism, synaptic transmission, and restorative processes, being upregulated. In addition, four proteins, mostly related to immune processes and inflammation, decreased significantly, and three, mostly related to iron metabolism and containment of synaptic sprouting, increased significantly during SCS. CONCLUSION This study identifies various biological processes that may underlie PSPS 2 pain and SCS therapeutic effects, including the modulation of neuroimmune response and inflammation, synaptic sprouting, vitamin and iron metabolism, and restorative processes.
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Affiliation(s)
- Gustavo Fabregat-Cid
- Multidisciplinary Pain Management Department, University General Hospital, Valencia, Spain; Surgery Department, Medical School, University of Valencia, Valencia, Spain.
| | | | - Anushik Harutyunyan
- Multidisciplinary Pain Management Department, University General Hospital, Valencia, Spain
| | | | - Vicente Monsalve-Dolz
- Multidisciplinary Pain Management Department, University General Hospital, Valencia, Spain
| | - Ana Mínguez-Martí
- Multidisciplinary Pain Management Department, University General Hospital, Valencia, Spain
| | | | | | | | - Juan Marcos Asensio Samper
- Multidisciplinary Pain Management Department, University General Hospital, Valencia, Spain; Surgery Department, Medical School, University of Valencia, Valencia, Spain
| | - José De Andrés
- Multidisciplinary Pain Management Department, University General Hospital, Valencia, Spain; Surgery Department, Medical School, University of Valencia, Valencia, Spain
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3
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Prior-de Castro C, Gómez-González C, Rodríguez-López R, Macher HC. Prenatal genetic diagnosis of monogenic diseases. Adv Lab Med 2023; 4:28-51. [PMID: 37359899 PMCID: PMC10197187 DOI: 10.1515/almed-2023-0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/04/2023] [Indexed: 06/28/2023]
Abstract
Prenatal genetic diagnosis of monogenic diseases is a process involving the use of a variety of molecular techniques for the molecular characterization of a potential monogenic disease in the fetus during pregnancy. Prenatal genetic diagnosis can be performed through invasive and non-invasive methods. A distinction must be made between "NIPD" (non-invasive prenatal diagnosis), which is considered to be diagnostic, from "NIPT" (non-invasive prenatal test), which is a screening test that requires subsequent confirmation by invasive methods. The different techniques currently available aim at detecting either, previously characterized pathogenic mutations in the family, the risk haplotype associated with the familial mutation, or potential pathogenic mutation(s) in a gene associated with a diagnostic suspicion. An overview is provided of relevant aspects of prenatal genetic diagnosis of monogenic diseases. The objective of this paper is to describe the main molecular techniques currently available and used in clinical practice. A description is provided of the indications, limitations and analytical recommendations regarding these techniques, and the standards governing genetic counseling. Continuous rapid advances in the clinical applications of genomics have provided increased access to comprehensive molecular characterization. Laboratories are struggling to keep in pace with technology developments.
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Affiliation(s)
| | | | - Raquel Rodríguez-López
- Laboratorio de Genética, Servicio Análisis Clínicos, Consorcio Hospital General Universitario, Valencia, Spain
| | - Hada C. Macher
- Departamento de Bioquímica Clínica, Hospital Universitario Virgen del Rocío de Sevilla, Sevilla, Spain
- Instituto de Investigaciones Biomédicas de Sevilla, IBIS, Universidad de Sevilla, Sevilla, Spain
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4
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Beigmohamadi R, Khastan A, Nieto J, Rodríguez-López R. Existence and uniqueness of non-periodic solutions to boundary value problems for discrete fractional difference equations with uncertainty. Inf Sci (N Y) 2023. [DOI: 10.1016/j.ins.2023.03.028] [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: 03/11/2023]
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5
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García-Martínez VE, Galiana-Vallés X, Zomeño-Alcalá O, Rodríguez-López R, Llena C, Martínez-Romero MDC, Guillén-Navarro E. Dental Phenotype with Minor Ectodermal Symptoms Suggestive of WNT10A Deficiency. Children (Basel) 2023; 10:children10020356. [PMID: 36832485 PMCID: PMC9955033 DOI: 10.3390/children10020356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023]
Abstract
Ectodermal dysplasias (EDs) represent a heterogeneous group of genetic disorders characterized by the abnormal development of ectodermal-derived tissues. They include the involvement of the hair, nails, skin, sweat glands, and teeth. Pathogenic variants in EDA1 (Xq12-13.1; OMIM*300451), EDAR (2q11-q13; OMIM*604095), EDARADD (1q42-q43, OMIM*606603), and WNT10A (2q35; OMIM*606268) genes are responsible for most EDs. Bi-allelic pathogenic variants of WNT10A have been associated with autosomal recessive forms of ED, as well as non-syndromic tooth agenesis (NSTA). The potential phenotypic impact of associated modifier mutations in other ectodysplasin pathway genes has also been pointed out. We present on an 11-year-old Chinese boy with oligodontia, with conical-shaped teeth as the main phenotype, and other very mild ED signs. The genetic study identified the pathogenic variants WNT10A (NM_025216.3): c.310C > T; p. (Arg104Cys) and c.742C > T; p. (Arg248Ter) in compound heterozygosis, confirmed by parental segregation. In addition, the patient had the polymorphism EDAR (NM_022336.4): c.1109T > C, p. (Val370Ala) in homozygosis, named EDAR370. A prominent dental phenotype with minor ectodermal symptoms is very suggestive of WNT10A mutations. In this case, the EDAR370A allele might also attenuate the severity of other ED signs.
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Affiliation(s)
| | - Ximo Galiana-Vallés
- Laboratory of Molecular Genetics, Clinical Analysis Service, Consortium General University Hospital, 46014 Valencia, Spain
| | - Otilia Zomeño-Alcalá
- Laboratory of Molecular Genetics, Clinical Analysis Service, Consortium General University Hospital, 46014 Valencia, Spain
| | - Raquel Rodríguez-López
- Laboratory of Molecular Genetics, Clinical Analysis Service, Consortium General University Hospital, 46014 Valencia, Spain
| | - Carmen Llena
- Primary Care Dentistry, Departament General University Hospital, 46070 Valencia, Spain
- Departament of Stomatology, Universitat de Valencia, 46010 Valencia, Spain
- Correspondence: ; Tel.: +34-609-92-13-77
| | - María del Carmen Martínez-Romero
- Molecular Genetics Section, Biochemistry and Clinical Genetics Center, University Clinical Hospital Virgen de la Arrixaca, Health Sciences PhD Program-UCAM, 30109 Murcia, Spain
- IMIB-Pascual Parrilla, 30007 Murcia, Spain
- CIBERER-ISCIII, 28029 Madrid, Spain
- Faculty of Medicine and Health Sciences, UCAM Catholic University of Murcia, 30109 Murcia, Spain
| | - Encarna Guillén-Navarro
- IMIB-Pascual Parrilla, 30007 Murcia, Spain
- CIBERER-ISCIII, 28029 Madrid, Spain
- Medical Genetics Section, Pediatrics Department, University Clinical Hospital Virgen de la Arrixaca, University of Murcia (UMU), 30120 Murcia, Spain
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6
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Beigmohamadi R, Khastan A, Nieto J, Rodríguez-López R. Discrete fractional calculus for fuzzy-number-valued functions and some results on initial value problems for fuzzy fractional difference equations. Inf Sci (N Y) 2022. [DOI: 10.1016/j.ins.2022.10.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Rodríguez-López R, García-Planells J, Martínez-Matilla M, Pérez-García C, García Banacloy A, Guzmán Luján C, Zomeño Alcalá O, Belchi Navarro J, Martínez-León J, Salguero-Bodes R. Homozygous Pro1066Arg MYBPC3 Pathogenic Variant in a 26Mb Region of Homozygosity Associated with Severe Hypertrophic Cardiomyopathy in a Patient of an Apparent Non-Consanguineous Family. Life (Basel) 2022; 12:life12071035. [PMID: 35888124 PMCID: PMC9316903 DOI: 10.3390/life12071035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022]
Abstract
MYPBC3 and MYH7 are the most frequently mutated genes in patients with hereditary HCM. Homozygous and compound heterozygous genotypes generate the most severe phenotypes. A 35-year-old woman who was a homozygous carrier of the p.(Pro1066Arg) variant in the MYBPC3 gene, developed HCM phenocopy associated with left ventricular noncompaction and various degrees of conduction disease. Her father, a double heterozygote for this variant in MYBPC3 combined with the variant p.(Gly1931Cys) in the MYH7 gene, was affected by HCM. The variant in MYBPC3 in the heterozygosis-produced phenotype was neither in the mother nor in her only sister. Familial segregation analysis showed that the homozygous genotype p.(Pro1066Arg) was located in a region of 26 Mb loss of heterozygosity due to some consanguinity in the parents. These findings describe the pathogenicity of this variant, supporting the hypothesis of cumulative variants in cardiomyopathies, as well as the modulatory effect of the phenotype by other genes such as MYH7. Advancing HPO phenotyping promoted by the Human Phenotype Ontology, the gene-disease correlation, and vice versa, is evidence for the phenotypic heterogeneity of familial heart disease. The progressive establishment of phenotypic characteristics over time also complicates the clinical description.
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Affiliation(s)
- Raquel Rodríguez-López
- Laboratory of Molecular Genetics, Clinical Analysis Service, Consortium General University Hospital, 46014 Valencia, Spain; (C.G.L.); (O.Z.A.)
- Correspondence: ; Tel.: +34-963-131-800-437-317; Fax: +34-963-131-979
| | | | | | | | - Amor García Banacloy
- Department of Surgery, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain;
| | - Carola Guzmán Luján
- Laboratory of Molecular Genetics, Clinical Analysis Service, Consortium General University Hospital, 46014 Valencia, Spain; (C.G.L.); (O.Z.A.)
| | - Otilia Zomeño Alcalá
- Laboratory of Molecular Genetics, Clinical Analysis Service, Consortium General University Hospital, 46014 Valencia, Spain; (C.G.L.); (O.Z.A.)
| | | | | | - Rafael Salguero-Bodes
- Cardiology Department and Research Institute Hospital Universitario, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain;
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Carlos III Health Institute, 28029 Madrid, Spain
- Medicine Department, Faculty of Medicine, Complutense University of Madrid, 28040 Madrid, Spain
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8
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Rodríguez-López R, Gimeno-Ferrer F, do Santos DA, Ferrer-Bolufer I, Luján CG, Alcalá OZ, García-Banacloy A, Cogollos VB, Juan CS. Reviewed and updated Algorithm for Genetic Characterization of Syndromic Obesity Phenotypes. Curr Genomics 2022; 23:147-162. [PMID: 36777005 PMCID: PMC9878830 DOI: 10.2174/1389202923666220426093436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/30/2021] [Accepted: 02/01/2022] [Indexed: 11/22/2022] Open
Abstract
Background: Individuals with a phenotype of early-onset severe obesity associated with intellectual disability can have molecular diagnoses ranging from monogenic to complex genetic traits. Severe overweight is the major sign of a syndromic physical appearance and predicting the influence of a single gene and/or polygenic risk profile is extremely complicated among the majority of the cases. At present, considering rare monogenic bases as the principal etiology for the majority of obesity cases associated with intellectual disability is scientifically poor. The diversity of the molecular bases responsible for the two entities makes the appliance of the current routinely powerful genomics diagnostic tools essential. Objective: Clinical investigation of these difficult-to-diagnose patients requires pediatricians and neurologists to use optimized descriptions of signs and symptoms to improve genotype correlations. Methods: The use of modern integrated bioinformatics strategies which are conducted by experienced multidisciplinary clinical teams. Evaluation of the phenotype of the patient's family is also of importance. Results: The next step involves discarding the monogenic canonical obesity syndromes and considering infrequent unique molecular cases, and/or then polygenic bases. Adequate management of the application of the new technique and its diagnostic phases is essential for achieving good cost/efficiency balances. Conclusion: With the current clinical management, it is necessary to consider the potential coincidence of risk mutations for obesity in patients with genetic alterations that induce intellectual disability. In this review, we describe an updated algorithm for the molecular characterization and diagnosis of patients with a syndromic obesity phenotype.
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Affiliation(s)
- Raquel Rodríguez-López
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain;,Address correspondence to this author at the Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Avenida de las Tres Cruces no. 2 46014, Valencia, Spain; Tel: 0034 963 131 800 – 437317; Fax: 0034 963 131 979; E-mail:
| | - Fátima Gimeno-Ferrer
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain
| | - David Albuquerque do Santos
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain
| | - Irene Ferrer-Bolufer
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain
| | - Carola Guzmán Luján
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain
| | - Otilia Zomeño Alcalá
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain
| | - Amor García-Banacloy
- Laboratory of Molecular Genetics, Clinical Analysis Service, General Hospital Consortium of Valencia, Valencia, Spain
| | | | - Carlos Sánchez Juan
- Endocrinology Service, General Hospital Consortium of Valencia, Valencia, Spain
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9
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Nuñez-Magos L, Lira-Escobedo J, Rodríguez-López R, Muñoz-Navia M, Castillo-Rivera F, Viveros-Méndez PX, Araujo E, Encinas A, Saucedo-Anaya SA, Aranda-Espinoza S. Effects of DC Magnetic Fields on Magnetoliposomes. Front Mol Biosci 2021; 8:703417. [PMID: 34589517 PMCID: PMC8473709 DOI: 10.3389/fmolb.2021.703417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 04/30/2021] [Accepted: 07/21/2021] [Indexed: 02/04/2023] Open
Abstract
The potential use of magnetic nanoparticles (MNPs) in biomedicine as magnetic resonance, drug delivery, imagenology, hyperthermia, biosensors, and biological separation has been studied in different laboratories. One of the challenges on MNP elaboration for biological applications is the size, biocompatibility, heat efficiency, stabilization in physiological conditions, and surface coating. Magnetoliposome (ML), a lipid bilayer of phospholipids encapsulating MNPs, is a system used to reduce toxicity. Encapsulated MNPs can be used as a potential drug and a gene delivery system, and in the presence of magnetic fields, MLs can be accumulated in a target tissue by a strong gradient magnetic field. Here, we present a study of the effects of DC magnetic fields on encapsulated MNPs inside liposomes. Despite their widespread applications in biotechnology and environmental, biomedical, and materials science, the effects of magnetic fields on MLs are unclear. We use a modified coprecipitation method to synthesize superparamagnetic nanoparticles (SNPs) in aqueous solutions. The SNPs are encapsulated inside phospholipid liposomes to study the interaction between phospholipids and SNPs. Material characterization of SNPs reveals round-shaped nanoparticles with an average size of 12 nm, mainly magnetite. MLs were prepared by the rehydration method. After formation, we found two types of MLs: one type is tense with SNPs encapsulated and the other is a floppy vesicle that does not show the presence of SNPs. To study the response of MLs to an applied DC magnetic field, we used a homemade chamber. Digitalized images show encapsulated SNPs assembled in chain formation when a DC magnetic field is applied. When the magnetic field is switched off, it completely disperses SNPs. Floppy MLs deform along the direction of the external applied magnetic field. Solving the relevant magnetostatic equations, we present a theoretical model to explain the ML deformations by analyzing the forces exerted by the magnetic field over the surface of the spheroidal liposome. Tangential magnetic forces acting on the ML surface result in a press force deforming MLs. The type of deformations will depend on the magnetic properties of the mediums inside and outside the MLs. The model predicts a coexistence region of oblate-prolate deformation in the zone where χ = 1. We can understand the chain formation in terms of a dipole-dipole interaction of SNP.
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Affiliation(s)
- L. Nuñez-Magos
- Laboratory of Biophysics and Soft Matter, Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - J. Lira-Escobedo
- Laboratory of Biophysics and Soft Matter, Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - R. Rodríguez-López
- Laboratory of Biophysics and Soft Matter, Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - M. Muñoz-Navia
- Ingeniería en Nanotecnología, Universidad de La Ciénega del Estado de Michoacán de Ocampo, Sahuayo, Mexico
| | - F. Castillo-Rivera
- CONACyT–Instituto de Geología de la Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - P. X. Viveros-Méndez
- Unidad Académica de Ciencia y Tecnología de la Luz y la Materia, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - E. Araujo
- Departamento de Matematicas y Física, Instituto Tecnológico y de Estudios Superiores de Occidente, San Pedro Tlaquepaque, Mexico
| | - A. Encinas
- Laboratory of Magnetism, División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, Mexico
| | - S. A. Saucedo-Anaya
- Unidad Académica de Estudios Nucleares, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - S. Aranda-Espinoza
- Laboratory of Biophysics and Soft Matter, Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
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Gimeno-Ferrer F, Albuquerque D, García Banacloy A, Guzmán Luján C, Vidal Garcia C, Marcaida Benito G, Sánchez Juan C, Bruna Esteban M, Rodríguez-López R. Genetic screening for MC4R gene identifies three novel mutations associated with severe familiar obesity in a cohort of Spanish individuals. Gene 2019; 704:74-79. [PMID: 30981838 DOI: 10.1016/j.gene.2019.04.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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] [Received: 01/14/2019] [Revised: 03/20/2019] [Accepted: 04/05/2019] [Indexed: 11/19/2022]
Abstract
MC4R gene is a hypothalamic satiety control mediator in which mutations cause a monogenic form of obesity. The aim of this study was to perform a genetic screening to identify variations in the entire region of MC4R gene. A total of 236 unrelated and severely obese patients (BMI ≥ 40 kg/m2) with Spanish ancestry and severe overweight familiar history have been enrolled into the study. Seven MC4R gene variants were identified in the heterozygous state in 21 patients. Coding variants p.Thr101Ile and p.Ala259Asp are new and variants p.Ser30Phe, p.Val103Ile and p.Ile251Leu were previously described. Two variants have been also observed in the promoter region of the MC4R gene; the c.-24G>A mutation, described for the first time, and the known c.-178A>C variant. Both in silico and family segregation analysis confirm the correlation between novel identified mutations in MC4R gene and obesity development. The correlation between the four variants (c.-24G>A, p.Thr101Ile, p.Ala259Asp and p.Ser30Phe) and the obesity phenotype, therefore, allows the conclusion that all of the four mutations cause a monogenic form of obesity.
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Affiliation(s)
- Fátima Gimeno-Ferrer
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain
| | - David Albuquerque
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain; Research Center for Anthropology and Health (CIAS), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Amor García Banacloy
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain; Department of Surgery, University of Valencia, Valencia, Spain
| | - Carola Guzmán Luján
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain; Laboratory of Molecular Genetics, Clinical Analysis Service, Consorcio Hospital General Universitario de Valencia, Valencia, Spain
| | - Clara Vidal Garcia
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain
| | - Goitzane Marcaida Benito
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain; Laboratory of Molecular Genetics, Clinical Analysis Service, Consorcio Hospital General Universitario de Valencia, Valencia, Spain
| | - Carlos Sánchez Juan
- Endocrinology and Nutrition Unit, Consorcio Hospital General Universitario de Valencia, Valencia, Spain
| | - Marcos Bruna Esteban
- General and Digestive Surgery Unit, Consorcio Hospital General Universitario de Valencia, Valencia, Spain
| | - Raquel Rodríguez-López
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain; Laboratory of Molecular Genetics, Clinical Analysis Service, Consorcio Hospital General Universitario de Valencia, Valencia, Spain.
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Martínez-Doménech A, García-Legaz Martínez M, Magdaleno-Tapial J, Pérez-Pastor G, Rodríguez-López R, Pérez-Ferriols A. Novel PTEN mutation in Cowden syndrome: case report with late diagnosis and non-malignant course. Dermatol Online J 2019; 25:13030/qt21x8x32j. [PMID: 31220904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023] Open
Abstract
Cowden syndrome (CS) is an infrequent genodermatosis caused by mutations in the phosphatase and tensin homolog (PTEN) gene in the majority of cases. As such, it belongs to the PTEN hamartoma tumor syndrome spectrum. This disease has a variable clinical expression characterized by the development of multiple hamartomatous tumors in different organs, usually during the second and third decades of life, and a high cumulative risk of several malignancies. We present a case of Cowden syndrome with late diagnosis presenting with a florid dermatological expression and multiple benign tumors, but no malignancies. A novel PTEN mutation was identified.
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Magdaleno-Tapial J, Hernández-Bel P, Valenzuela-Oñate C, Gimeno-Ferrer F, Rodríguez-López R, Hernández-Bel L, Sabater-Marco V, Alegre-de Miquel V. Congenital plasminogen deficiency with long standing pseudomembranous conjunctival and genital lesions. JAAD Case Rep 2019; 5:44-46. [PMID: 30581935 PMCID: PMC6287055 DOI: 10.1016/j.jdcr.2018.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
| | - Pablo Hernández-Bel
- Department of Dermatology, Hospital General Universitario de Valencia, Valencia, Spain
| | | | - Fátima Gimeno-Ferrer
- Molecular Genetics Laboratory, Clinical Analysis Service, Hospital General Universitario de Valencia, Valencia, Spain
| | - Raquel Rodríguez-López
- Molecular Genetics Laboratory, Clinical Analysis Service, Hospital General Universitario de Valencia, Valencia, Spain
| | - Laura Hernández-Bel
- Department of Ophthalmology, Hospital General Universitario de Valencia, Valencia, Spain
| | - Vicente Sabater-Marco
- Department of Anatomic Pathology, Hospital General Universitario de Valencia, Valencia, Spain
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Martínez-Doménech A, García-Legaz Martínez M, Magdaleno-Tapial J, Pérez-Pastor G, Rodríguez-López R, Pérez-Ferriols A. Novel PTEN mutation in Cowden syndrome: case report with late diagnosis and non-malignant course. Dermatol Online J 2019. [DOI: 10.5070/d3255044077] [Citation(s) in RCA: 1] [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: 11/08/2022] Open
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Albuquerque D, González LM, Ferrer FG, Bruna M, Sánchez C, Benito GM, Rodríguez-López R, Manco L. Association study of six single nucleotide polymorphisms with obesity in two independent Iberian samples. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.04.006] [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: 10/17/2022] Open
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Gamero-Villarroel C, González LM, Rodríguez-López R, Albuquerque D, Carrillo JA, García-Herráiz A, Flores I, Gervasini G. Influence of TFAP2B and KCTD15 genetic variability on personality dimensions in anorexia and bulimia nervosa. Brain Behav 2017; 7:e00784. [PMID: 28948079 PMCID: PMC5607548 DOI: 10.1002/brb3.784] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/10/2017] [Accepted: 06/26/2017] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION TFAP2B and KCTD15 are obesity-related genes that interact to regulate feeding behavior. We hypothesize that variability in these loci, isolated or in combination, could also be related to the risk of eating disorders (ED) and/or associated psychological traits. METHODS We screened 425 participants (169 ED patients, 75 obese subjects, and 181 controls) for 10 clinically relevant and tag single-nucleotide polymorphisms (SNPs) in KCTD15 and TFAP2B by the Sequenom MassARRAY platform and direct sequencing. Psychometric evaluation was performed with EDI-2 and SCL-90R inventories. RESULTS The KCTD15 rs287103 T variant allele was associated with increased risk of bulimia nervosa (BN) (OR = 4.34 [1.47-29.52]; p = .003) and with scores of psychopathological scales of these patients. Haplotype *6 in KCTD15 was more frequent in controls (OR = 0.40 [0.20-0.80], p = .009 for anorexia nervosa), while haplotype *4 in TFAP2B affected all three scales of the SCL-90R inventory in BN patients (p ≤ .01). Epistasis analyses revealed relevant interactions with body mass index of BN patients (p < .001). Genetic profiles in obese patients did not significantly differ from those found in ED patients. CONCLUSIONS This is the first study that evaluates the combined role of TFAP2B and KCTD15 genes in ED. Our preliminary findings suggest that the interaction of genetic variability in these loci could influence the risk for ED and/or anthropometric and psychological parameters.
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Affiliation(s)
- Carmen Gamero-Villarroel
- Department of Medical & Surgical Therapeutics Division of Pharmacology Medical School University of Extremadura Badajoz Spain
| | - Luz M González
- Department of Medical & Surgical Therapeutics Division of Pharmacology Medical School University of Extremadura Badajoz Spain
| | | | - David Albuquerque
- Service of Clinical Analyses General University Hospital Valencia Spain.,Research Center for Anthropology and Health (CIAS) University of Coimbra Coimbra Portugal
| | - Juan A Carrillo
- Department of Medical & Surgical Therapeutics Division of Pharmacology Medical School University of Extremadura Badajoz Spain
| | | | - Isalud Flores
- Eating Disorders UnitInstitute of Mental Disorders Health Service of Extremadura Badajoz Spain
| | - Guillermo Gervasini
- Department of Medical & Surgical Therapeutics Division of Pharmacology Medical School University of Extremadura Badajoz Spain
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16
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Albuquerque D, Manco L, González LM, Gervasini G, Benito GM, González JR, Rodríguez-López R. Polymorphisms in the SNRPN gene are associated with obesity susceptibility in a Spanish population. J Gene Med 2017; 19. [PMID: 28387446 DOI: 10.1002/jgm.2956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 01/10/2017] [Revised: 03/15/2017] [Accepted: 04/04/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND SNRPN, which codes for the RNA-binding SmN protein, is a candidate gene for Prader-Willi syndrome. One characteristic of this neuroendocrine disorder is hyperphagia resulting in extreme obesity later in life. In the present study, we aimed to assess whether variability within this gene could be implicated in obesity susceptibility. METHODS A case-control study was performed including 265 unrelated patients with nonsyndromic and early-onset severe obesity, belonging to high-risk obesity families from Spanish ancestry; 184 healthy control individuals were included representative of the same genetic background and sex-matched. Forty-nine single nucleotide polymorphisms (SNPs) spanning the entire SNRPN gene were selected and genotyped using the Sequenom MassARRAY platform (Sequenom Inc., San Diego, CA, USA). RESULTS The four SNPs, rs12905653, rs752874, rs1391516 and rs2047433, were found to be nominally associated with obesity (p < 0.03). The diversity haplotype distribution among cases and controls identified the combination rs12905653-T/rs8028366-A/rs4028395-T as being strongly and inversely associated with obesity (odds ratio = 0.49; p = 0.0006). A genetic risk score was built based on rs12905653, rs1391516 and rs2047433 SNPs and each unit increase in genetic risk score increased the obesity risk by 49% (odds ratio = 1.49, 95% confidence interval = 1.24-1.80). CONCLUSIONS To our knowledge, this is the first study reporting an association between variability in the SNRPN gene and the risk of being obese. Interestingly, it was the major allele of each SNP that was found to be associated with the risk of weight gain. Further studies analyzing this locus and the possible additive deleterious capability of SNP combinations could be useful for demonstrating the development of obesity.
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Affiliation(s)
- David Albuquerque
- Research Center for Anthropology and Health (CIAS), University of Coimbra, Coimbra, Portugal.,Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain
| | - Licínio Manco
- Research Center for Anthropology and Health (CIAS), University of Coimbra, Coimbra, Portugal
| | - Luz M González
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain
| | - Guillermo Gervasini
- Department of Medical & Surgical Therapeutics, Division of Pharmacology, Medical School, University of Extremadura, Badajoz, Spain
| | - Goitzane Marcaida Benito
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain.,Laboratory of Molecular Genetics, Clinical Analysis Service, Hospital Universitario General de Valencia, Valencia, Spain
| | - Juan R González
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Raquel Rodríguez-López
- Genomics Group, Fundación Investigación Hospital General Universitario de Valencia, Valencia, Spain.,Laboratory of Molecular Genetics, Clinical Analysis Service, Hospital Universitario General de Valencia, Valencia, Spain
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17
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Torres AK, Escartín N, Monzó C, Guzmán C, Ferrer I, González-Muñoz C, Peña P, Monzó V, Marcaida G, Rodríguez-López R. Genetic susceptibility to Gilbert's syndrome in a valencian population; efficacy of the fasting test. Rev Clin Esp 2016; 217:1-6. [PMID: 27866642 DOI: 10.1016/j.rce.2016.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 06/24/2016] [Revised: 09/26/2016] [Accepted: 10/02/2016] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To describe the populational distribution of the UGT1A1*28 variant (genetic variant code rs8175347) located in the promotor of the UGT gene and correlate its genotypes with the results of the fasting test, as well as its relationship with the biochemical disorder of Gilbert's syndrome (GS) in a Valencian population. PATIENTS AND METHODS We studied the prevalence of the genotypes (TA)6/6 (TA)6/7 and (TA)7/7 of the deleterious variant rs8175347 in 144 patients with hyperbilirubinemia, 38 of whom had previously undergone the fasting test to diagnose GS, and in 150 control patients. By analysing the genomic region of the TATA box of the UGT1A1 gene promotor using Sanger sequencing, we established the correlation between the rs8175347 genotypes and the fasting test results and with the patients' biochemical disorders. RESULTS The rate of heterozygosity of allele (TA)7 in the control population was 32% and increased to 87.59% among the patients with suspected GS. The rate of genotype TA7/7 was 81.94% among the patients with hyperbilirubinemia, compared with 11.33% in the control patients. The fasting test showed a 15.79% rate of false negatives and a 5.26% rate of false positives. CONCLUSIONS The high frequency of allele (TA)7 among the Valencian control population, almost double the 5% reported for European control patients, confirms the high rate of GS reported in the Spanish population, without observing significant differences between the geographical ends of the country. The efficacy and reliability of the fasting test for the diagnosis of GS is questionable.
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Affiliation(s)
- A K Torres
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - N Escartín
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - C Monzó
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - C Guzmán
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - I Ferrer
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - C González-Muñoz
- Servicio de Digestivo, Hospital General de Valencia, Valencia, España
| | - P Peña
- Laboratorio de Bioquímica, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - V Monzó
- Laboratorio de Bioquímica, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - G Marcaida
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España; Laboratorio de Bioquímica, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España
| | - R Rodríguez-López
- Laboratorio de Genética Molecular, Servicio de Análisis Clínicos, Hospital General de Valencia, Valencia, España.
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Albuquerque D, Stice E, Rodríguez-López R, Manco L, Nóbrega C. Current review of genetics of human obesity: from molecular mechanisms to an evolutionary perspective. Mol Genet Genomics 2015; 290:1191-221. [DOI: 10.1007/s00438-015-1015-9] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 02/11/2015] [Indexed: 12/18/2022]
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19
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Gamero-Villarroel C, González LM, Gordillo I, Carrillo JA, García-Herráiz A, Flores I, Rodríguez-López R, Gervasini G. Impact of NEGR1 genetic variability on psychological traits of patients with eating disorders. Pharmacogenomics J 2014; 15:278-83. [PMID: 25245582 DOI: 10.1038/tpj.2014.53] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/04/2014] [Accepted: 08/13/2014] [Indexed: 01/24/2023]
Abstract
Genetics variants in the NEGR1 gene, strongly expressed in the brain, have been reported to affect the neuronal control of food intake therefore inducing obesity. With the same rationale, we hypothesized that this genetic variability may be associated with psychological traits commonly displayed by eating disorder (ED) patients and/or with the risk for the disorder. We analyzed 21 tag-single-nucleotide polymorphisms (SNPs) in the coding sequence and adjacent regions of the NEGR1 gene. A total of 169 ED patients (106 with anorexia nervosa (AN) and 63 with bulimia nervosa (BN)) and 312 healthy subjects were genotyped. Personality traits and general psychopathological symptoms were assessed by the Eating Disorders Inventory Test-2 (EDI-2) and Symptom Checklist 90 Revised inventories. None of the SNPs or haplotypes analyzed were associated with a greater risk of ED or correlated with anthropometric parameters. However, in patients with BN, four SNPs (rs12740031, rs10789322, rs6659202 and rs591540) correlated with the scores in Drive for Thinness (DT), Ineffectiveness (I) and Interoceptive Awareness (IA) (Bonferroni-P<0.05 in all instances). The first two SNPs along with rs954299 and rs2422021 formed a haplotype block, which showed a consistent association with the EDI-2 score in BN patients (Bonferroni-P=0.01). A subsequent three-SNP sliding-window approach identified a central area, encompassing both the haplotype block and the individually relevant SNPs that strongly correlated with the scores of BN patients in DT, I, IA and Bulimia. No associations were identified in the AN group. These preliminary results indicate that NEGR1 could be an important locus influencing certain personality dimensions in BN patients.
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Affiliation(s)
- C Gamero-Villarroel
- Department of Medical & Surgical Therapeutics, Division of Pharmacology, Medical School, University of Extremadura, Badajoz, Spain
| | - L María González
- Department of Medical & Surgical Therapeutics, Division of Pharmacology, Medical School, University of Extremadura, Badajoz, Spain
| | - I Gordillo
- Department of Medical & Surgical Therapeutics, Division of Pharmacology, Medical School, University of Extremadura, Badajoz, Spain
| | - J Antonio Carrillo
- Department of Medical & Surgical Therapeutics, Division of Pharmacology, Medical School, University of Extremadura, Badajoz, Spain
| | - A García-Herráiz
- Eating Disorders Unit, Institute of Mental Disorders, Health Service of Extremadura, Badajoz, Spain
| | - I Flores
- Eating Disorders Unit, Institute of Mental Disorders, Health Service of Extremadura, Badajoz, Spain
| | - R Rodríguez-López
- Service of Clinical Analyses, General University Hospital, Valencia, Spain
| | - G Gervasini
- Department of Medical & Surgical Therapeutics, Division of Pharmacology, Medical School, University of Extremadura, Badajoz, Spain
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21
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González JR, Estévez MN, Giralt PS, Cáceres A, Pérez LML, González-Carpio M, Ballester F, Sunyer J, Rodríguez-López R. Genetic risk profiles for a childhood with severe overweight. Pediatr Obes 2014; 9:272-80. [PMID: 23629956 DOI: 10.1111/j.2047-6310.2013.00166.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [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: 08/29/2012] [Revised: 02/20/2013] [Accepted: 03/08/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The objective of this study was the description of a valid genetic risk score (GRS) to predict individuals with high susceptibility to childhood overweight by their genetic profiles. DESIGN AND METHODS Case-control study including a group of children with high-risk familial predisposition to morbid obesity. Birth cohort from general population constituted the validation sample. For the discovery sample, 218 children with non-syndromic obesity and 190 control individuals were included. The validation sample was 653 children from two birth cohorts belonging to the INMA (Infancia y Medio Ambiente [Environment and Childhood] )project. 109 SNPs located in the genes FTO, SEC16B, BDNF, ETV5, SH2B1, GNPDA2, LYPLAL1, MSRA, TFAP2, KCTD15, MTCH2 and NEGR1, previously reported in association to body mass index (BMI) were analysed. For the validation sample, association between genome-wide data and BMI measurements between 3.5 and 5 years of age, were evaluated. RESULTS The GRS includes six SNPs in the genes FTO, TFAP2B, SEC16B, ETV5 and SH2B1. The score distribution differs among cases and controls (P = 9.2 × 10(-14) ) showing a significant linear association with obesity (odds ratio [OR] per allele = 1.69; confidence interval [CI] 95% = 1.46-1.97; P = 4.3 × 10(-1) and area under the receiver operating characteristic curve [AUC] = 0.727; CI 95% = 0.676-0.778). The results were validated by the INMA cohort (OR per allele = 1.23 CI 95% = 1.03-1.48 and AUC = 0.601 CI 95% = 0.522-0.680). CONCLUSIONS The use of our proposed genetic score provides useful information to determine those children who are susceptible to obesity. To improve the efficiency of clinical prevention and treatment of obesity, it is essential to design individualized based protocols in advance knowledge of the molecular basis of inherited susceptibility.
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Affiliation(s)
- J R González
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Institut Municipal d'Investigació Mèdica, Barcelona, Spain; CIBER Epidemiología y Salud Pública, Barcelona, Spain
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Albuquerque D, Nóbrega C, Rodríguez-López R, Manco L. Association study of common polymorphisms in MSRA, TFAP2B, MC4R, NRXN3, PPARGC1A, TMEM18, SEC16B, HOXB5 and OLFM4 genes with obesity-related traits among Portuguese children. J Hum Genet 2014; 59:307-13. [PMID: 24670271 DOI: 10.1038/jhg.2014.23] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 02/06/2014] [Accepted: 03/03/2014] [Indexed: 02/01/2023]
Abstract
At least 52 genetic loci were associated with obesity-related traits. However, little is known about the genetic basis of obesity among children. This study aims to test whether 10 polymorphisms in obesity-related genes methionine sulfoxide reductase A (MSRA), transcription factor AP-2 beta (TFAP2B), melanocortin 4 receptor (MC4R), neurexin 3 (NRXN3), peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PPARGC1A), transmembrane protein 18 (TMEM18), homolog of S. cerevisiae Sec16 (SEC16B), homeobox B5 (HOXB5) and olfactomedin 4 (OLFM4) are associated with the risk of obesity in Portuguese children. A total of 730 children aging from 6 to 12 years old, recruited randomly from public schools in Portugal, were analysed. Anthropometric measurements were obtained and children were classified into three phenotypic groups, normal weight (n=256), overweight (n=320) and obese (n=154), according to the International Obesity Task Force cutoffs. Polymorphisms were genotyped by allelic discrimination TaqMan assays. The MC4R rs12970134 polymorphism was nominally associated with body mass index (BMI) (P=0.035), BMI Z-score (P=0.043) and waist circumference (P=0.020), and borderline associated with weight (P=0.053). Near nominal associations were also found for the PPARGC1A rs8192678 polymorphism with weight (P=0.061), and for the MSRA rs545854 polymorphism with BMI (P=0.055) and BMI Z-score (P=0.056). Furthermore, logistic regression showed that MC4R rs12970134 and TFAP2B rs987237 were nominally, respectively, associated (P=0.029) and borderline associated (P=0.056) with the obese phenotype. This study highlighted the possible association of MC4R, PPARGC1A, MSRA and TFAP2B polymorphisms with several obesity-related traits in a sample of Portuguese children. The two significant associated TFAP2B rs987237 and MC4R rs12970134 polymorphisms showed an opposite direction of effect to that in the original reports.
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Affiliation(s)
- David Albuquerque
- Department of Life Sciences, Research Centre for Anthropology and Health (CIAS), University of Coimbra, Coimbra, Portugal
| | - Clévio Nóbrega
- Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, Portugal
| | | | - Licínio Manco
- Department of Life Sciences, Research Centre for Anthropology and Health (CIAS), University of Coimbra, Coimbra, Portugal
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Albuquerque D, Estévez MN, Víbora PB, Giralt PS, Balsera AM, Cortés PG, López MJ, Luego LM, Gervasini G, Hernández SB, Arroyo-Díez J, Vacas MA, Nóbrega C, Manco L, Rodríguez-López R. Novel Variants in theMC4RandLEPRGenes among Severely Obese Children from the Iberian Population. Ann Hum Genet 2014; 78:195-207. [DOI: 10.1111/ahg.12058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 01/21/2014] [Indexed: 12/12/2022]
Affiliation(s)
- David Albuquerque
- Research Centre for Anthropology and Health (CIAS); Department of Life Sciences; University of Coimbra; Portugal
| | | | - Pilar Beato Víbora
- Department of Dietician; Endocrinologist Service; Infanta Cristina Hospital; Badajoz Spain
| | - Plácida Sánchez Giralt
- Department of Dietician; Endocrinologist Service; Infanta Cristina Hospital; Badajoz Spain
| | | | - Pedro Gil Cortés
- Department of Dietician; Endocrinologist Service; Infanta Cristina Hospital; Badajoz Spain
| | - Mercedes Jiménez López
- Department of Medical & Surgical Therapeutics; Medical School; University of Extremadura; Badajoz Spain
| | - Luis Miguel Luego
- Department of Dietician; Endocrinologist Service; Infanta Cristina Hospital; Badajoz Spain
| | - Guillermo Gervasini
- Department of Medical & Surgical Therapeutics; Medical School; University of Extremadura; Badajoz Spain
| | | | | | | | - Clévio Nóbrega
- Center for Neurosciences & Cell Biology; University of Coimbra; Portugal
| | - Licínio Manco
- Research Centre for Anthropology and Health (CIAS); Department of Life Sciences; University of Coimbra; Portugal
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Martín-López JE, Beltrán-Calvo C, Rodríguez-López R, Molina-López T. Comparison of the accuracy of CT colonography and colonoscopy in the diagnosis of colorectal cancer. Colorectal Dis 2014; 16:O82-9. [PMID: 24299052 DOI: 10.1111/codi.12506] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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: 06/04/2013] [Accepted: 09/03/2013] [Indexed: 12/28/2022]
Abstract
AIM The available evidence was reviewed to compare the effectiveness of CT colonography with that of colonoscopy for colorectal cancer (CRC) screening. METHOD An electronic search was conducted using PubMed, EMBASE, the Cochrane Library and Centre for Reviews and Dissemination databases, from inception to July 2009. Studies were included if investigations used CT colonography for CRC screening in asymptomatic populations. Studies were excluded if investigations were conducted for the diagnosis of CRC or in elderly, high-risk or symptomatic populations. RESULTS Of the 213 references identified, nine studies were included. The specificity of CT colonography in screening for CRC was high, although it decreased with decreasing diameter of polyp to be detected. The sensitivity of CT colonography for the detection of polyps < 6 mm in diameter was low and heterogeneous, although it was higher for polyps > 10 mm. The main factors contributing to a greater sensitivity of CT colonography were the inclusion of only populations with an average CRC risk and colonic insufflation with CO2 . The incidence of adverse effects was very low for both tests. CONCLUSION CT colonography has high specificity but heterogeneous sensitivity, although in most cases it is not as sensitive or specific as conventional colonoscopy. CT colonography could therefore be useful as a screening test for populations with an average risk of CRC.
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Balsera AM, Estévez MN, Beltrán EB, Sánchez-Giralt P, García LG, Moreno TH, García de Cáceres M, Carbonell Pérez JM, Gómez EG, Rodríguez-López R. Distinct mechanism of formation of the 48, XXYY karyotype. Mol Cytogenet 2013; 6:25. [PMID: 23822881 PMCID: PMC3734011 DOI: 10.1186/1755-8166-6-25] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 05/30/2013] [Indexed: 12/03/2022] Open
Abstract
Background To expose the unusual nature of a coincident sex chromosomal aneuploidy in a patient and his father. Molecular mechanisms involved probably are based on the sperm chromosome of paternal origin, which determine the mode of formation. Conventional cytogenetics techniques and multiple Quantitative Fluorescent PCR of STR markers in sexual chromosomes in the patient and his parents. Results 48,XXYY and 47,XYY aneuploidies in the patient and his father, respectively, were identified. The additional X and Y chromosomes showed parental origin. Conclusions An infrequent origin of the 48,XXYY syndrome was demonstrated. Mostly, it is thought to result from an aneuploid sperm produced through two consecutive non disjunction events in both meiosis I and II in a chromosomally normal father, but in our father’s patient a 47,XYY was discovered. It is suggested that a higher incidence of 24,XY and 24,YY sperm may be possible in 47,XYY individuals andan increased risk for aneuploidy pregnancies may exist. Although 48,XXYY patients and Klinefelter syndrome are often compared, recently they are regarded as a distinct genetic and clinical entity.
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Rodríguez-López R, Pérez JMC, Balsera AM, Rodríguez GG, Moreno TH, García de Cáceres M, Serrano MGC, Freijo FC, Ruiz JRG, Angueira FB, Pérez PM, Estévez MN, Gómez EG. The modifier effect of the BDNF gene in the phenotype of the WAGRO syndrome. Gene 2013; 516:285-90. [DOI: 10.1016/j.gene.2012.11.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 11/12/2012] [Accepted: 11/29/2012] [Indexed: 01/09/2023]
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Beato-Víbora P, Arroyo-Díez J, Rodríguez-López R. Thyroid hormone resistance caused by a novel deleterious variant of the thyroid hormone receptor beta gene. Eur J Obstet Gynecol Reprod Biol 2012. [PMID: 23195042 DOI: 10.1016/j.ejogrb.2012.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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González JR, González-Carpio M, Hernández-Sáez R, Serrano Vargas V, Torres Hidalgo G, Rubio-Rodrigo M, García-Nogales A, Núñez Estévez M, Luengo Pérez LM, Rodríguez-López R. FTO risk haplotype among early onset and severe obesity cases in a population of western Spain. Obesity (Silver Spring) 2012; 20:909-15. [PMID: 22030988 DOI: 10.1038/oby.2011.325] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Childhood and adult obesity have been widely associated with FTO genetic variability in different populations. This study aimed to investigate the linkage disequilibrium (LD) block structure of a region surrounding the candidate rs9939609 SNP and determine the best single nucleotide polymorphism (SNP) combination that explains the higher proportion of variability observed in children with severe obesity, including obese subjects from families with a very high occurrence of obesity. A sliding window approach pointed to a block containing the rs1477196/rs17817449/rs9939609 haplotype (P value 3.1 × 10(-8)). Carriers of the GGA combination had an increased risk of obesity (odds ratio (OR) 2.07, 95% confidence interval (CI) 1.41-3.04, P = 2.0 × 10(-4)) with respect to those individuals with the reference ATT haplotype. A further SNP, rs9921255, also showed association with obesity (P = 8.3 × 10(-4), OR 1.77; 95% CI 1.15-2.74 and OR 5.78; 95% CI 1.22-27.49 for heterozygotes and homozygotes, respectively) and did not segregate with the previously described risk haplotype. The calculation of risk score based on the GGA haplotype combined with the rs9921255 variant showed a much greater effect of the FTO gene on high BMI. This score yields an attributable risk of 34% for severe obesity, and the increased risk per risk allele was 1.71 (P = 1.0 × 10(-6)). We conclude that the description of this polymorphic combination in the FTO gene could be useful for the early identification of inherited susceptibility to weight-gain since childhood, with a higher sensitivity than considering the effect of a single marker.
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Affiliation(s)
- Juan R González
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
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Rodríguez-López R, González-Carpio M, Serrano MV, Torres G, García de Cáceres MT, Herrera T, Román Á, Rubio M, Méndez P, Hernández-Sáez R, Núñez M, Luengo LM. Asociación de polimorfismos en el gen FTO con la obesidad mórbida en la población extremeña. ACTA ACUST UNITED AC 2010; 57:203-9. [DOI: 10.1016/j.endonu.2010.03.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Revised: 03/05/2010] [Accepted: 03/09/2010] [Indexed: 02/09/2023]
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Martinez-Ferrandis JI, Rodríguez-López R, Milne RL, González E, Cebolla E, Chirivella I, Zamora P, Arias JI, Palacios S, Cervantes A, Díez O, Benitez J, Armengod ME. Polymorphisms in TRAIL receptor genes and risk of breast cancer in Spanish women. Cancer Biomark 2007; 3:89-93. [PMID: 17522430 DOI: 10.3233/cbm-2007-3203] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [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: 11/15/2022]
Abstract
TRAIL is a potent inducer of apoptosis in malignant but not in normal cells. TRAIL binds to the proapoptotic death receptor DR4 and DR5 as well as to the decoy receptors DcR1 and DcR2. To evaluate the involvement of TRAIL receptor genes in breast cancer, we carried out a case-control study of eight selected polymorphisms in a large sample of Spanish women. Three of the eight selected SNPs (626G/C and 1322G/A in DR4 and 2699A/G in DcR2) showed some evidence of different genotype distributions in a random selection of 535 cases and 480 controls and were therefore studied in our entire sample (1008 cases and 768 controls). For the two DR4 polymorphisms, no differences in genotype or haplotype distribution were found between cases and controls. Interestingly, allele 2699G in the decoy receptor DcR2 appears associated with reduced breast cancer risk (P=0.05). Given that it is located in the 3' UTR, its effect might be related to DcR2 mRNA instability, or linkage disequilibrium with a functional variant residing in either DcR2 or neighbouring genes. A decreased efficiency of DcR2 to work as decoy receptor for TRAIL, would facilitate the apoptotic pathway in cells at risk.
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Salas A, Vega A, Torres M, Quintela I, Phillips C, Rodríguez-López R, Rivas G, Benítez J, Carracedo A. High-density screening of the Zbtb7gene in breast cancer patients. Breast Cancer Res 2005. [PMCID: PMC4233530 DOI: 10.1186/bcr1109] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Vega A, Salas A, Phillips C, Sobrino B, Carracedo B, Ruíz-Ponte C, Rodríguez-López R, Rivas G, Benítez J, Carracedo A. Large-scale single nucleotide polymorphism analysis of candidates for low-penetrance breast cancer genes. Breast Cancer Res 2005. [PMCID: PMC4233522 DOI: 10.1186/bcr1101] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Rodríguez-López R, Osorio A, Ribas G, Pollán M, Sánchez-Pulido L, de la Hoya M, Ruibal A, Zamora P, Arias JI, Salazar R, Vega A, Martínez JI, Esteban-Cardeñosa E, Alonso C, Letón R, Urioste Azcorra M, Miner C, Armengod ME, Carracedo A, González-Sarmiento R, Caldés T, Díez O, Benítez J. The variant E233G of the RAD51D gene could be a low-penetrance allele in high-risk breast cancer families without BRCA1/2 mutations. Int J Cancer 2004; 110:845-9. [PMID: 15170666 DOI: 10.1002/ijc.20169] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Six SNPs have been detected in the DNA repair genes RAD51C and RAD51D, not previously characterized. The novel variant E233G in RAD51D is more highly represented in high-risk, site-specific, familial breast cancer cases that are not associated with the BRCA1/2 genes, with a frequency of 5.74% (n = 174) compared to a control population (n = 567) and another subset of breast cancer patients (n = 765) with a prevalence of around 2% only (comparison to controls, OR = 2.6, 95% CI 1.12-6.03; p < 0.021). We found that the immunohistochemical profile detected in available tumors from these patients differs slightly from those described in non-BRCA1/2 tumors. Finally, the structural prediction of the putative functional consequence of this change indicates that it can diminish protein stability and structure. This suggests a role for E233G as a low-penetrance susceptibility gene in the specific subgroup of high-risk familial breast cancer cases that are not related to BRCA1/2.
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Affiliation(s)
- Raquel Rodríguez-López
- Department of Human Genetics, Spanish National Cancer Centre, C/Melchior Fernández Almagro 3, 28029 Madrid, Spain.
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Valle L, Rodríguez-López R, Robledo M, Benítez J, Urioste M. Concurrence of Germline Mutations in the APC and PTEN Genes in a Colonic Polyposis Family Member. J Clin Oncol 2004; 22:2252-3. [PMID: 15169818 DOI: 10.1200/jco.2004.99.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Ruiz-Llorente S, Bravo J, Cebrián A, Cascón A, Pollan M, Tellería D, Letón R, Urioste M, Rodríguez-López R, de Campos JM, Muñoz MJ, Lacambra C, Benítez J, Robledo M. Genetic characterization and structural analysis of VHL Spanish families to define genotype-phenotype correlations. Hum Mutat 2003; 23:160-169. [PMID: 14722919 DOI: 10.1002/humu.10309] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [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: 11/10/2022]
Abstract
Von Hippel-Lindau (VHL) disease is a hereditary cancer syndrome caused by germline mutations in the VHL gene. This gene, located in the 3p25-26 chromosome, is a tumor suppressor gene associated with the inhibition of angiogenesis and apoptosis, cell cycle exit, fibronectin matrix assembly, and proteolysis. To define the molecular basis of VHL in a Spanish population, we studied 33 patients suspected of suffering familial or de novo VHL disease and two familial pheochromocytoma cases. Sequence analysis of the coding regions of the VHL gene revealed germline sequence variants in 68.7% (24 out of 35) of the patients, and four of them presented with undescribed germline alterations: g.5429-5430insG, p.Leu128Arg, p.Tyr175Cys, and p.Tyr175Asn. For the remaining 11 patients who showed negative for point mutations, we performed Southern blot analysis and detected gross rearrangements in eight cases (22.8% of the index cases). Our results support the relevance of VHL gene analysis in familial pheochromocytoma cases and also in those with no familial history. In order to investigate the relevance of different amino acid changes in the VHL phenotype, we also analyzed the genotype-phenotype correlations using structural analysis to assess protein stability and complexes. The association of clear cell renal carcinoma (CCRC) development with a relatively high loss of structural stability in pVHL missense-mutants was consistent. Structural stability data in the genotype-phenotype correlations therefore provides us with a better understanding of VHL clinical implications. It is also a suitable approach to the evaluation of unknown significance changes.
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Affiliation(s)
- Sergio Ruiz-Llorente
- Hereditary Endocrine Cancer Group, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Jerónimo Bravo
- Structural and Computational Biology Programme, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Arancha Cebrián
- Hereditary Endocrine Cancer Group, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Alberto Cascón
- Hereditary Endocrine Cancer Group, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Marina Pollan
- Cancer Epidemiology Service, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain
| | - Dolores Tellería
- Hereditary Endocrine Cancer Group, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Rocío Letón
- Hereditary Endocrine Cancer Group, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Miguel Urioste
- Human Genetics Department, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Raquel Rodríguez-López
- Human Genetics Department, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Jose M de Campos
- Department of Neurosurgery, Hospital Rio Hortega, Valladolid, Spain
| | - María J Muñoz
- Pediatric Neurosurgery Department, Hospital 12 de Octubre, Madrid, Spain
| | - Carmen Lacambra
- Department of Internal Medicine, Hospital Severo Ochoa, Madrid, Spain
| | - Javier Benítez
- Human Genetics Department, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Mercedes Robledo
- Hereditary Endocrine Cancer Group, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
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Osorio A, Rodríguez-López R, Díez O, de la Hoya M, Ignacio Martínez J, Vega A, Esteban-Cardeñosa E, Alonso C, Caldés T, Benítez J. The breast cancer low-penetrance allele 1100delC in the CHEK2 gene is not present in Spanish familial breast cancer population. Int J Cancer 2003; 108:54-6. [PMID: 14618615 DOI: 10.1002/ijc.11414] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Searching for low-penetrance genes involved in breast cancer susceptibility has been a field of interest in the last few years. Recently, the CHEK 2 gene, involved in DNA damage and replication checkpoints, has been pointed out as a good candidate; moreover, a specific variant in this gene,1100delC, has been found to increase breast cancer susceptibility among familial breast cancer cases not attributable to mutations in BRCA1 or BRCA2 genes. In our present study, we evaluated the role of the 1100delC variant as a susceptibility allele in breast cancer in the Spanish population. However, our results suggest that this variant is absent or very infrequent in our population, making its screening irrelevant from the practical point of view.
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Affiliation(s)
- Ana Osorio
- Department of Human Genetics, Spanish National Cancer Center, Madrid, Spain.
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Díez O, Osorio A, Durán M, Martinez-Ferrandis JI, de la Hoya M, Salazar R, Vega A, Campos B, Rodríguez-López R, Velasco E, Chaves J, Díaz-Rubio E, Jesús Cruz J, Torres M, Esteban E, Cervantes A, Alonso C, San Román JM, González-Sarmiento R, Miner C, Carracedo A, Eugenia Armengod M, Caldés T, Benítez J, Baiget M. Analysis of BRCA1 and BRCA2 genes in Spanish breast/ovarian cancer patients: a high proportion of mutations unique to Spain and evidence of founder effects. Hum Mutat 2003; 22:301-12. [PMID: 12955716 DOI: 10.1002/humu.10260] [Citation(s) in RCA: 142] [Impact Index Per Article: 6.8] [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: 01/28/2023]
Abstract
We screened index cases from 410 Spanish breast/ovarian cancer families and 214 patients (19 of them males) with breast cancer for germ-line mutations in the BRCA1 and BRCA2 genes, using SSCP, PTT, CSGE, DGGE, and direct sequencing. We identified 60 mutations in BRCA1 and 53 in BRCA2. Of the 53 distinct mutations observed, 11 are novel and 12 have been reported only in Spanish families (41.5%). The prevalence of mutations in this set of families was 26.3%, but the percentage was higher in the families with breast and ovarian cancer (52.1%). The lowest proportion of mutations was found in the site-specific female breast cancer families (15.4%). Of the families with male breast cancer cases, 59.1% presented mutations in the BRCA2 gene. We found a higher frequency of ovarian cancer associated with mutations localized in the 5' end of the BRCA1 gene, but there was no association between the prevalence of this type of cancer and mutations situated in the ovarian cancer cluster region (OCCR) region of exon 11 of the BRCA2 gene. The mutations 187_188delAG, 330A>G, 5236G>A, 5242C>A, and 589_590del (numbered after GenBank U14680) account for 46.6% of BRCA1 detected mutations whereas 3036_3039del, 6857_6858del, 9254_9258del, and 9538_9539del (numbered after GenBank U43746) account for 56.6% of the BRCA2 mutations. The BRCA1 330A>G has a Galician origin (northwest Spain), and BRCA2 6857_6858del and 9254_9258del probably originated in Catalonia (northeast Spain). Knowledge of the spectrum of mutations and their geographical distribution in Spain will allow a more effective detection strategy in countries with large Spanish populations.
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Affiliation(s)
- Orland Díez
- Servei de Genètica, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
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Osorio A, de la Hoya M, Rodríguez-López R, Granizo JJ, Díez O, Vega A, Durán M, Carracedo A, Baiget M, Caldés T, Benítez J. Over-representation of two specific haplotypes among chromosomes harbouring BRCA1 mutations. Eur J Hum Genet 2003; 11:489-92. [PMID: 12774043 DOI: 10.1038/sj.ejhg.5200969] [Citation(s) in RCA: 14] [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] [Indexed: 11/09/2022] Open
Abstract
The BRCA1 gene is included in a 200-400 kb region that is subjected to a recombination suppression mechanism; this region shows nearly complete linkage disequilibrium for a series of common biallelic polymorphisms, all of them with rarer allele frequency close to 0.4. These series of SNPs define two major haplotypes designated as class I and class II. In the present study, we have determined haplotype classes in the index case of 106 breast/ovarian cancer families previously screened for mutations in the BRCA genes and we have found that haplotype II (the less frequent in the control population) is over-represented among chromosomes harbouring mutations in BRCA1. In addition, we have defined a subtype of chromosomes characterized by haplotype I and one specific allele for the microsatellite marker D17S855, which are also more frequently associated with BRCA1 mutations. These findings may have important consequences for the selection of families with higher probabilities of carrying mutations in the BRCA1 gene.
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Affiliation(s)
- Ana Osorio
- Department of Human Genetics, Spanish National Cancer Center, Madrid, Spain.
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Rodríguez-López R, Osorio A, Sánchez-Pulido L, De La Hoya M, Barroso A, Caldés T, Benítez J. No mutations in the XRCC2 gene in BRCA1/2-negative high-risk breast cancer families. Int J Cancer 2003; 103:136-7. [PMID: 12455067 DOI: 10.1002/ijc.10766] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Osorio A, de la Hoya M, Rodríguez-López R, Martínez-Ramírez A, Cazorla A, Granizo JJ, Esteller M, Rivas C, Caldés T, Benítez J. Loss of heterozygosity analysis at the BRCA loci in tumor samples from patients with familial breast cancer. Int J Cancer 2002; 99:305-9. [PMID: 11979449 DOI: 10.1002/ijc.10337] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The BRCA1 and BRCA2 genes are responsible for a high proportion of familial breast cancer; germline mutations in these genes confer a lifetime risk of about 70% for developing breast cancer. Most of the described deleterious mutations are small deletions or insertions that originate a truncated protein; however, in many cases, they are amino acid changes whose significance is unknown. In these cases, there are some tests that can analyze the meaning of these variants, but most remain unclassified. The BRCA genes are tumor suppressors and it is believed that complete loss of the wild-type allele is a common mechanism of inactivation in tumors from patients carrying a germline deleterious mutation in these genes; if this is true, loss of heterozygosity (LOH) analysis in the tumor sample could help to distinguish if a rare variant is either a deleterious mutation or a common polymorphism. In the present study, we performed LOH analysis at the BRCA loci in 47 tumors from patients who belonged to high-risk breast cancer families and were carriers of any type of alteration in these genes. Our results suggest that (i) loss of the wild-type allele is the most common mechanism of inactivation in tumors from patients who carry a deleterious mutation in any of the genes, (ii) this loss is not common when we analyze familial tumors not associated with mutations in BRCA and (iii) LOH can be used to clarify variants of unknown significance in the BRCA genes.
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Affiliation(s)
- Ana Osorio
- Department of Human Genetics, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain.
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