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Dvoretskova E, Ho MC, Kittke V, Neuhaus F, Vitali I, Lam DD, Delgado I, Feng C, Torres M, Winkelmann J, Mayer C. Spatial enhancer activation influences inhibitory neuron identity during mouse embryonic development. Nat Neurosci 2024:10.1038/s41593-024-01611-9. [PMID: 38528203 DOI: 10.1038/s41593-024-01611-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 02/23/2024] [Indexed: 03/27/2024]
Abstract
The mammalian telencephalon contains distinct GABAergic projection neuron and interneuron types, originating in the germinal zone of the embryonic basal ganglia. How genetic information in the germinal zone determines cell types is unclear. Here we use a combination of in vivo CRISPR perturbation, lineage tracing and ChIP-sequencing analyses and show that the transcription factor MEIS2 favors the development of projection neurons by binding enhancer regions in projection-neuron-specific genes during mouse embryonic development. MEIS2 requires the presence of the homeodomain transcription factor DLX5 to direct its functional activity toward the appropriate binding sites. In interneuron precursors, the transcription factor LHX6 represses the MEIS2-DLX5-dependent activation of projection-neuron-specific enhancers. Mutations of Meis2 result in decreased activation of regulatory enhancers, affecting GABAergic differentiation. We propose a differential binding model where the binding of transcription factors at cis-regulatory elements determines differential gene expression programs regulating cell fate specification in the mouse ganglionic eminence.
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Affiliation(s)
- Elena Dvoretskova
- Max Planck Institute for Biological Intelligence, Martinsried, Germany
- Max Planck Institute of Neurobiology, Martinsried, Germany
| | - May C Ho
- Max Planck Institute for Biological Intelligence, Martinsried, Germany
- Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Volker Kittke
- Institute of Neurogenomics, Helmholtz Zentrum München GmbH, German Research Center for Environmental Health, Neuhererg, Germany
- TUM School of Medicine and Health, Institute of Human Genetics, Technical University of Munich, Munich, Germany
- DZPG (German Center for Mental Health), Munich, Germany
| | - Florian Neuhaus
- Max Planck Institute for Biological Intelligence, Martinsried, Germany
- Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Ilaria Vitali
- Max Planck Institute for Biological Intelligence, Martinsried, Germany
- Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Daniel D Lam
- Institute of Neurogenomics, Helmholtz Zentrum München GmbH, German Research Center for Environmental Health, Neuhererg, Germany
- TUM School of Medicine and Health, Institute of Human Genetics, Technical University of Munich, Munich, Germany
| | - Irene Delgado
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Departamento de Genética, Fisiología y Microbiología, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain
| | - Chao Feng
- Max Planck Institute for Biological Intelligence, Martinsried, Germany
- Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Miguel Torres
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Juliane Winkelmann
- Institute of Neurogenomics, Helmholtz Zentrum München GmbH, German Research Center for Environmental Health, Neuhererg, Germany
- TUM School of Medicine and Health, Institute of Human Genetics, Technical University of Munich, Munich, Germany
- DZPG (German Center for Mental Health), Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Christian Mayer
- Max Planck Institute for Biological Intelligence, Martinsried, Germany.
- Max Planck Institute of Neurobiology, Martinsried, Germany.
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Yadav US, Biswas T, Singh PN, Gupta P, Chakraborty S, Delgado I, Zafar H, Capellini TD, Torres M, Bandyopadhyay A. Molecular mechanism of synovial joint site specification and induction in developing vertebrate limbs. Development 2023:314422. [PMID: 37272420 PMCID: PMC10323242 DOI: 10.1242/dev.201335] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 05/25/2023] [Indexed: 06/06/2023]
Abstract
The vertebrate appendage comprises three primary segments, the stylopod, zeugopod, and autopod, each separated by joints. The molecular mechanisms governing the specification of joint sites, which define segment lengths and thereby limb architecture, remain largely unknown. Existing literature suggests that reciprocal gradients of Retinoic Acid (RA) and Fibroblast Growth Factor (FGF) signaling define the expression domains of putative segment markers, Meis1, Hoxa11, and Hoxa13. Barx1 is expressed in the presumptive joint sites. Our data demonstrate that RA-FGF signaling gradients define expression domain of Barx1 in the first presumptive joint site. When misexpressed, Barx1 induces novel interzone-like structures and its loss-of-function partially blocks interzone development. Simultaneous perturbations of RA-FGF signaling gradients result in predictable shifts of Barx1 expression domains along the proximo-distal axis and consequently, formation of repositioned joints. Our data suggest that during early limb bud development, Meis1 and Hoxa11 expression domains are overlapping while Barx1 expression domain resides within the Hoxa11 expression domain. However, once the interzone is formed, the expression domains are refined and Barx1 expression domain becomes congruent with the border of these two putative segment markers.
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Affiliation(s)
- Upendra S Yadav
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | | | - Pratik N Singh
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Pankaj Gupta
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Soura Chakraborty
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Irene Delgado
- Cardiovascular Regeneration Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Hamim Zafar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
- Department of Computer Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Terence D Capellini
- Department of Human Evolutionary Biology, Harvard University, 11 Divinity Avenue Cambridge, MA 02138, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02138, USA
| | - Miguel Torres
- Cardiovascular Regeneration Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Amitabha Bandyopadhyay
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
- The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India
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3
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Delgado I, Giovinazzo G, Temiño S, Gauthier Y, Balsalobre A, Drouin J, Torres M. Control of mouse limb initiation and antero-posterior patterning by Meis transcription factors. Nat Commun 2021; 12:3086. [PMID: 34035267 PMCID: PMC8149412 DOI: 10.1038/s41467-021-23373-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 04/21/2021] [Indexed: 12/31/2022] Open
Abstract
Meis1 and Meis2 are homeodomain transcription factors that regulate organogenesis through cooperation with Hox proteins. Elimination of Meis genes after limb induction has shown their role in limb proximo-distal patterning; however, limb development in the complete absence of Meis function has not been studied. Here, we report that Meis1/2 inactivation in the lateral plate mesoderm of mouse embryos leads to limb agenesis. Meis and Tbx factors converge in this function, extensively co-binding with Tbx to genomic sites and co-regulating enhancers of Fgf10, a critical factor in limb initiation. Limbs with three deleted Meis alleles show proximal-specific skeletal hypoplasia and agenesis of posterior skeletal elements. This failure in posterior specification results from an early role of Meis factors in establishing the limb antero-posterior prepattern required for Shh activation. Our results demonstrate roles for Meis transcription factors in early limb development and identify their involvement in previously undescribed interaction networks that regulate organogenesis.
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Affiliation(s)
- Irene Delgado
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Giovanna Giovinazzo
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Susana Temiño
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Yves Gauthier
- Laboratoire de Génétique Moléculaire, Institut de Recherches Cliniques de Montréal, Montreal, QC, Canada
| | - Aurelio Balsalobre
- Laboratoire de Génétique Moléculaire, Institut de Recherches Cliniques de Montréal, Montreal, QC, Canada
| | - Jacques Drouin
- Laboratoire de Génétique Moléculaire, Institut de Recherches Cliniques de Montréal, Montreal, QC, Canada
| | - Miguel Torres
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.
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López-Delgado AC, Delgado I, Cadenas V, Sánchez-Cabo F, Torres M. Axial skeleton anterior-posterior patterning is regulated through feedback regulation between Meis transcription factors and retinoic acid. Development 2021; 148:dev.193813. [PMID: 33298461 DOI: 10.1242/dev.193813] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 11/20/2020] [Indexed: 11/20/2022]
Abstract
Vertebrate axial skeletal patterning is controlled by co-linear expression of Hox genes and axial level-dependent activity of HOX protein combinations. MEIS transcription factors act as co-factors of HOX proteins and profusely bind to Hox complex DNA; however, their roles in mammalian axial patterning remain unknown. Retinoic acid (RA) is known to regulate axial skeletal element identity through the transcriptional activity of its receptors; however, whether this role is related to MEIS/HOX activity remains unknown. Here, we study the role of Meis in axial skeleton formation and its relationship to the RA pathway in mice. Meis elimination in the paraxial mesoderm produces anterior homeotic transformations and rib mis-patterning associated to alterations of the hypaxial myotome. Although Raldh2 and Meis positively regulate each other, Raldh2 elimination largely recapitulates the defects associated with Meis deficiency, and Meis overexpression rescues the axial skeletal defects in Raldh2 mutants. We propose a Meis-RA-positive feedback loop, the output of which is Meis levels, that is essential to establish anterior-posterior identities and patterning of the vertebrate axial skeleton.
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Affiliation(s)
- Alejandra C López-Delgado
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid 28003, Spain
| | - Irene Delgado
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid 28003, Spain
| | - Vanessa Cadenas
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid 28003, Spain
| | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid 28003, Spain
| | - Miguel Torres
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid 28003, Spain
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5
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Iglesias-Garriz I, Delgado I, Prieto-Salvador I, Garrote C, García-Palomo A, Fernández-Vazquez F. Previously diagnosed cancer and mortality after ST-segment elevation acute myocardial infarction treated with primary angioplasty. Catheter Cardiovasc Interv 2020; 95:1269-1274. [PMID: 31584247 DOI: 10.1002/ccd.28506] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/21/2019] [Accepted: 09/10/2019] [Indexed: 01/28/2023]
Abstract
OBJECTIVE We investigated if a previous cancer diagnosis influences the outcome of patients with STEMI treated with primary coronary intervention (PCI). BACKGROUND ST-segment myocardial infarction (STEMI) and a history of cancer can coexist because both have a high incidence and prevalence. METHODS Prospective cohort observational study, The primary end-point was total mortality. RESULTS We included 917 patients, 53 of them (5.8%) were cancer survivors. During follow-up (median, 643 days [interquartile range, 258 to 1,015 days]), 100 patients died, 88 (10.2%) patients without a cancer diagnosis and 12 (22.6%) patients with a previous cancer diagnosis, which was significantly different (log-rank test = 8.4, p = .004). Cancer patients were older (73.4 (11.5) vs. 65.2 (13.8) years, p < .001), with a lower prevalence of previous stroke (1.1% vs. 2.2%, p = .002). Their hemoglobin concentration was also lower (13.4 (2.1) vs. 14.4 (1.7) g/L, p = .001). A trend towards a lower use of coronary stents in cancer survivors was noted (p = .061). Cancer was associated with a high probability of death (HR = 2.37, 95% confidence interval [CI] 1.30-4.34, p = .005). When confounding variables were included, this association was no longer significant (HR = 1.63, 95% CI 0.84-3.18, p = .150). CONCLUSIONS Patients with a previous cancer diagnosis who had an acute STEMI treated by primary PCI did not seem to have a worse prognosis. The difference in the crude mortality rate can be explained by the baseline differences between both groups. Previous cancer diagnosis should not be included in the clinical decision process when a patient is having an acute STEMI.
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Affiliation(s)
| | - Irene Delgado
- Service of Oncology, Complejo Asistencial Universitario de León, León, Spain
| | | | - Carmen Garrote
- Service of Cardiology, Complejo Asistencial Universitario de León, León, Spain
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Delgado I, López-Delgado AC, Roselló-Díez A, Giovinazzo G, Cadenas V, Fernández-de-Manuel L, Sánchez-Cabo F, Anderson MJ, Lewandoski M, Torres M. Proximo-distal positional information encoded by an Fgf-regulated gradient of homeodomain transcription factors in the vertebrate limb. Sci Adv 2020; 6:eaaz0742. [PMID: 32537491 PMCID: PMC7269661 DOI: 10.1126/sciadv.aaz0742] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 03/10/2020] [Indexed: 05/16/2023]
Abstract
The positional information theory proposes that a coordinate system provides information to embryonic cells about their position and orientation along a patterning axis. Cells interpret this information to produce the appropriate pattern. During development, morphogens and interpreter transcription factors provide this information. We report a gradient of Meis homeodomain transcription factors along the mouse limb bud proximo-distal (PD) axis antiparallel to and shaped by the inhibitory action of distal fibroblast growth factor (FGF). Elimination of Meis results in premature limb distalization and HoxA expression, proximalization of PD segmental borders, and phocomelia. Our results show that Meis transcription factors interpret FGF signaling to convey positional information along the limb bud PD axis. These findings establish a new model for the generation of PD identities in the vertebrate limb and provide a molecular basis for the interpretation of FGF signal gradients during axial patterning.
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Affiliation(s)
- Irene Delgado
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Alejandra C. López-Delgado
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Alberto Roselló-Díez
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Giovanna Giovinazzo
- Pluripotent Cell Technology Unit, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Vanessa Cadenas
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | | | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
| | - Matthew J. Anderson
- Cancer and Developmental Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Mark Lewandoski
- Cancer and Developmental Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Miguel Torres
- Cardiovascular Development Program, Centro Nacional de Investigaciones Cardiovasculares, CNIC, Madrid, Spain
- Corresponding author.
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7
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Valverde A, Uranga E, Agirre G, Murguiondo M, Jauregui G, San Francisco J, Delgado I, Barrio A, Moreno L, Telleria H, Basterretxea L. Identification of malnutrition risk factors in patients with cancer in the first nursing visit. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz276.037] [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: 11/14/2022] Open
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8
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Manso L, Bermejo B, Delgado I, Aguirre E, Oltra A, Gonzalez M, Malón D, Ales J, Rodriguez C, Moreno F. PALBOCOMP: Retrospective observational analysis of palbociclib treatment in patients with advanced breast cancer within a compassionate use program in Spain. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz100.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Sanz-Navarro M, Delgado I, Torres M, Mustonen T, Michon F, Rice DP. Dental Epithelial Stem Cells Express the Developmental Regulator Meis1. Front Physiol 2019; 10:249. [PMID: 30914971 PMCID: PMC6423187 DOI: 10.3389/fphys.2019.00249] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/25/2019] [Indexed: 11/13/2022] Open
Abstract
MEIS1 is a key developmental regulator of several organs and participates in stem cell maintenance in different niches. However, despite the murine continuously growing incisor being a well described model for the study of adult stem cells, Meis1 has not been investigated in a dental context. Here, we uncover that Meis1 expression in the tooth is confined to the epithelial compartment. Its expression arises during morphogenesis and becomes restricted to the mouse incisor epithelial stem cell niche, the labial cervical loop. Meis1 is specifically expressed by Sox2+ stem cells, which give rise to all dental epithelial cell lineages. Also, we have found that Meis1 in the incisor is coexpressed with potential binding partner Pbx1 during both embryonic and adult stages. Interestingly, Meis2 is present in different areas of the forming tooth and it is not expressed by dental epithelial stem cells, suggesting different roles for these two largely homologous genes. Additionally, we have established the expression patterns of Meis1 and Meis2 during tongue, hair, salivary gland and palate formation. Finally, analysis of Meis1-null allele mice indicated that, similarly, to SOX2, MEIS1 is not essential for tooth initiation, but might have a role during adult incisor renewal.
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Affiliation(s)
- Maria Sanz-Navarro
- Helsinki Institute of Life Science, Institute of Biotechnology, University of Helsinki, Helsinki, Finland.,Orthodontics, Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Irene Delgado
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Miguel Torres
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Tuija Mustonen
- Orthodontics, Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Frederic Michon
- Helsinki Institute of Life Science, Institute of Biotechnology, University of Helsinki, Helsinki, Finland.,The Institute for Neurosciences of Montpellier, Inserm UMR1051, University of Montpellier, Saint Eloi Hospital, Montpellier, France
| | - David P Rice
- Orthodontics, Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.,Orthodontics, Oral and Maxillofacial Diseases, Helsinki University Hospital, Helsinki, Finland
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Uranga E, Valverde A, Landa M, Esnaola M, Basterretxea L, Agirre G, Aizpurua O, Barrio A, Centeno M, Delgado I, Jauregui G, Moreno L, Murguiondo M, San Francisco J, Telleria H. Standardising the psychosocial assessment of oncological patients at Donostia university hospital. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy276.016] [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: 11/15/2022] Open
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11
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Sánchez-Cousido L, López-González A, Honrado Franco E, Vallejo Pascual E, Sanz O, Lopez Gonzalez L, Delgado I, López-Flores M, García Palomo A. Relationship between androgen receptor and tumor-infiltrating lymphocytes in triple-negative breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy270.246] [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: 11/14/2022] Open
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Abstract
Klüver-Bucy syndrome (KBS) is a rare behavioral phenotype described in monkeys and humans that appears most often after bilateral temporal damage. The main features of KBS are compulsion to examine objects orally, increased sexual activity, placidity, hypermetamorphosis, visual agnosia, and amnesia. Cases in children are scarce, and the most frequently reported etiology is herpes encephalitis. Hyperorality (90%), hypersexuality (82%), and epilepsy (70%) were the most common features of the 51 cases reported in the literature to date. Carbamazepine, selective serotonin reuptake inhibitors (SSRIs), and neuroleptics have been used for symptomatic treatment with variable control. Corticosteroids or immunosupressive agents, such as rituximab, can be an option to use in some cases, according to etiology suspicion. Cognitive and behavioral disturbances after KBS are often severe, but improvement can occur over a long time and residual disabilities vary from major to fairly mild.We report two new encephalitis-associated pediatric patients and review all of the pediatric KBS cases in the literature to better describe the clinical features of this rare neurobehavioral condition.
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Affiliation(s)
- N Juliá-Palacios
- Pediatric Neurology, Vall d'Hebron Hospital, UAB, Barcelona, Spain
| | - S Boronat
- Pediatric Neurology, Vall d'Hebron Hospital, UAB, Barcelona, Spain.,Clinical Genetics, Vall d'Hebron Hospital, UAB, Barcelona, Spain
| | - I Delgado
- Pediatric Neuroradiology, Vall d'Hebron Hospital, UAB, Barcelona, Spain
| | - A Felipe
- Pediatric Neurology, Vall d'Hebron Hospital, UAB, Barcelona, Spain
| | - A Macaya
- Pediatric Neurology, Vall d'Hebron Hospital, UAB, Barcelona, Spain.,Pediatric Neurology Research Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Catalonia, Spain
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13
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Casati S, Aschberger K, Barroso J, Casey W, Delgado I, Kim TS, Kleinstreuer N, Kojima H, Lee JK, Lowit A, Park HK, Régimbald-Krnel MJ, Strickland J, Whelan M, Yang Y, Zuang V. Standardisation of defined approaches for skin sensitisation testing to support regulatory use and international adoption: position of the International Cooperation on Alternative Test Methods. Arch Toxicol 2018; 92:611-617. [PMID: 29127450 PMCID: PMC5818556 DOI: 10.1007/s00204-017-2097-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/17/2017] [Indexed: 11/05/2022]
Abstract
Skin sensitisation is the regulatory endpoint that has been at the centre of concerted efforts to replace animal testing in recent years, as demonstrated by the Organisation for Economic Co-operation and Development (OECD) adoption of five non-animal methods addressing mechanisms under the first three key events of the skin sensitisation adverse outcome pathway. Nevertheless, the currently adopted methods, when used in isolation, are not sufficient to fulfil regulatory requirements on the skin sensitisation potential and potency of chemicals comparable to that provided by the regulatory animal tests. For this reason, a number of defined approaches integrating data from these methods with other relevant information have been proposed and documented by the OECD. With the aim to further enhance regulatory consideration and adoption of defined approaches, the European Union Reference Laboratory for Alternatives to Animal testing in collaboration with the International Cooperation on Alternative Test Methods hosted, on 4-5 October 2016, a workshop on the international regulatory applicability and acceptance of alternative non-animal approaches, i.e., defined approaches, to skin sensitisation assessment of chemicals used in a variety of sectors. The workshop convened representatives from more than 20 regulatory authorities from the European Union, United States, Canada, Japan, South Korea, Brazil and China. There was a general consensus among the workshop participants that to maximise global regulatory acceptance of data generated with defined approaches, international harmonisation and standardisation are needed. Potential assessment criteria were defined for a systematic evaluation of existing defined approaches that would facilitate their translation into international standards, e.g., into a performance-based Test Guideline. Informed by the discussions at the workshop, the ICATM members propose practical ways to further promote the regulatory use and facilitate adoption of defined approaches for skin sensitisation assessments.
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Affiliation(s)
- S Casati
- European Commission, Joint Research Centre (JRC), 21027, Ispra, Italy
| | - K Aschberger
- European Commission, Joint Research Centre (JRC), 21027, Ispra, Italy
| | - J Barroso
- European Commission, Joint Research Centre (JRC), 21027, Ispra, Italy
| | - W Casey
- National Toxicology Program Interagency Center for the Evaluation of Alternative Toxicological Methods, National Institute of Environmental Health Sciences, Research Triangle Park, Morrisville, NC, 27709, USA
| | - I Delgado
- BraCVAM, National Institute of Quality Control in Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - T S Kim
- Korean Center for the Validation of Alternative Methods, National Institute of Food and Drug Safety Evaluation, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - N Kleinstreuer
- National Toxicology Program Interagency Center for the Evaluation of Alternative Toxicological Methods, National Institute of Environmental Health Sciences, Research Triangle Park, Morrisville, NC, 27709, USA
| | - H Kojima
- Japanese Center for the Validation of Alternative Methods, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - J K Lee
- Korean Center for the Validation of Alternative Methods, National Institute of Food and Drug Safety Evaluation, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - A Lowit
- Office of Pesticide Programs, U.S. Environmental Protection Agency, Washington DC, 20460, USA
| | - H K Park
- Korean Center for the Validation of Alternative Methods, National Institute of Food and Drug Safety Evaluation, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - M J Régimbald-Krnel
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada
| | - J Strickland
- Integrated Laboratory Systems inc., Research Triangle Park, Morrisville, NC, 27709, USA
| | - M Whelan
- European Commission, Joint Research Centre (JRC), 21027, Ispra, Italy
| | - Y Yang
- Institute of Toxicology, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, 510300, China
| | - Valérie Zuang
- European Commission, Joint Research Centre (JRC), 21027, Ispra, Italy.
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Izaguirre A, Delgado I, Mateo-Troncoso C, Sánchez-Nuncio HR, Sánchez-Márquez W, Luque-Ramos A. [Rehabilitation of hip fractures. Systematic review]. Acta Ortop Mex 2018; 32:28-35. [PMID: 30182543] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
INTRODUCTION Hip fractures are considered among one of the most disabling injuries in patients older than 60 years of age. This fractures are associated with a high incidence of mortality and it is the leading cause of hospital admission that requires surgical treatment in Orthopaedic Trauma Centers. METHODS This systematic review aimed to group, classify and report the best level of evidence of physical therapy and rehabilitation of patients that have been treated with osteostynthesis after trochanteric or subtrochanteric fracture. The outcomes of efficacy and safety were return to activities of daily living, independence and rate of complications. RESULTS We identified 3,889 abstracts from PubMed, and 1,567 abstracts from other sources, after eliminating duplicates, and posterior to a thorough screening 378 abstracts were read. From these, 316 abstracts were excluded, and 62 articles were considered eligible. After reading for relevant outcomes 41 articles were excluded. Synthesis was based in 21 studies. CONCLUSIONS Long term results of specialized physical therapy, appear to be crucial in the first months after surgery, and not that important after the four months after surgery. Recent literature supports that the differences of daily activities and independence of the patients that survive a hip fracture tend to be similar with no difference in the type of physical therapy.
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Affiliation(s)
- A Izaguirre
- Facultad de Medicina «Dr. Alberto Romo Caballero», Universidad Autónoma de Tamaulipas. Tamaulipas. México
| | - I Delgado
- Facultad de Medicina «Dr. Alberto Romo Caballero», Universidad Autónoma de Tamaulipas. Tamaulipas. México
| | - C Mateo-Troncoso
- Facultad de Medicina «Dr. Alberto Romo Caballero», Universidad Autónoma de Tamaulipas. Tamaulipas. México
| | - H R Sánchez-Nuncio
- Facultad de Medicina «Dr. Alberto Romo Caballero», Universidad Autónoma de Tamaulipas. Tamaulipas. México
| | - W Sánchez-Márquez
- Facultad de Medicina «Dr. Alberto Romo Caballero», Universidad Autónoma de Tamaulipas. Tamaulipas. México
| | - A Luque-Ramos
- Facultad de Medicina «Dr. Alberto Romo Caballero», Universidad Autónoma de Tamaulipas. Tamaulipas. México
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Montevecchi F, Meccariello G, Firinu E, Rashwan MS, Arigliani M, De Benedetto M, Palumbo A, Bahgat Y, Bahgat A, Lugo Saldana R, Marzetti A, Pignataro L, Mantovani M, Rinaldi V, Carrasco M, Freire F, Delgado I, Salamanca F, Bianchi A, Onerci M, Agostini P, Romano L, Benazzo M, Baptista P, Salzano F, Dallan I, Nuzzo S, Vicini C. Prospective multicentre study on barbed reposition pharyngoplasty standing alone or as a part of multilevel surgery for sleep apnoea. Clin Otolaryngol 2017; 43:483-488. [PMID: 28981208 DOI: 10.1111/coa.13001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The aim of this study was to demonstrate in a prospective multicentre study that Barbed Reposition Pharyngoplasty (BRP) procedure is safe and effective in management of obstructive sleep apnoea/hypopnea syndrome (OSAHS) patients. DESIGN Prospective study. SETTING Multicentre study. PARTICIPANTS Patients suffering from obstructive sleep apnoea. MAIN OUTCOMES MEASURES Values of postoperative apnoea-hypopnea index (AHI), oxygen desaturation index (ODI), epworth sleepiness scale (ESS). RESULTS 111 Barbed Reposition Pharyngoplasty procedures standing alone or as a part of multilevel surgery for OSAHS, performed between January and September 2016, were analysed in 15 different centres. The average hospitalisation period was 2.5 ± 0.5 days. The mean patient age was 46.3 ± 10.5 years. The average body mass index at the time of the procedure was 27.9 ± 3.2, and the majority of the patients were men (83%). The mean preoperative and postoperative apnoea/hypopnea index was 33.4 ± 19.5 and 13.5 ± 10.3, respectively (P < .001). The mean preoperative and postoperative ESS score was 10.2 ± 4.5 and 6.1 ± 3.6, respectively (P < .001). The mean preoperative and postoperative ODI were 29.6 ± 20.7 and 12.7 ± 10.8, respectively (P < .001). CONCLUSIONS Patients undergoing BRP standing alone or as part of a multilevel approach for the treatment of OSAHS have a reasonable expectation for success with minimal morbidity.
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Affiliation(s)
- F Montevecchi
- Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni - L. Pierantoni Hospital, Forlì - Infermi Hospital, Faenza - ASL of Romagna, Forli, University of Ferrrara, Italy
| | - G Meccariello
- Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni - L. Pierantoni Hospital, Forlì - Infermi Hospital, Faenza - ASL of Romagna, Forli, University of Ferrrara, Italy
| | - E Firinu
- Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni - L. Pierantoni Hospital, Forlì - Infermi Hospital, Faenza - ASL of Romagna, Forli, University of Ferrrara, Italy
| | - M S Rashwan
- Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni - L. Pierantoni Hospital, Forlì - Infermi Hospital, Faenza - ASL of Romagna, Forli, University of Ferrrara, Italy
| | - M Arigliani
- Department of Otolaryngology Head and Neck Surgery, Fazzi Hospital, Lecce, Italy
| | - M De Benedetto
- Department of Otolaryngology Head and Neck Surgery, Fazzi Hospital, Lecce, Italy
| | - A Palumbo
- Department of Otolaryngology Head and Neck Surgery, Fazzi Hospital, Lecce, Italy
| | - Y Bahgat
- Department of Otorhinolaryngology, Alexandria University, Alexandria, Egypt
| | - A Bahgat
- Department of Otorhinolaryngology, Alexandria University, Alexandria, Egypt
| | - R Lugo Saldana
- Department of Otorhinolaryngology, Grupo Medico San Pedro, Monterrey, Mexico
| | - A Marzetti
- Department of Otolaryngology, Fabrizio Spaziani Hospital, Frosinone, Italy
| | - L Pignataro
- Department of Otolaryngology, Department of Clinical Sciences and Community Health, Fondazione I.R.C.C.S. Ca' Granda, Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - M Mantovani
- Department of Otolaryngology, Department of Clinical Sciences and Community Health, Fondazione I.R.C.C.S. Ca' Granda, Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - V Rinaldi
- Department of Otolaryngology, Department of Clinical Sciences and Community Health, Fondazione I.R.C.C.S. Ca' Granda, Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - M Carrasco
- Department of Otorhinolaryngology, Doctor Peset University Hospital, Valencia, Spain
| | - F Freire
- Department of Otolaryngology, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - I Delgado
- Department of Otolaryngology, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - F Salamanca
- Department of Otolaryngology, S. Pio X Hospital, Milan, Italy
| | - A Bianchi
- Department of Otolaryngology, S. Pio X Hospital, Milan, Italy
| | - M Onerci
- Ear Nose Throat-Head and Neck Surgery Department, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - P Agostini
- Department of Otolaryngology, San Bassiano Hospital, Bassano del Grappa, Vicenza, Italy
| | - L Romano
- Department of Otolaryngology, San Bassiano Hospital, Bassano del Grappa, Vicenza, Italy
| | - M Benazzo
- Department of Otolaryngology Head Neck Surgery, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy
| | - P Baptista
- Department of Otolaringology, Campus Universitario, University of Navarra, Pamplona, Spain
| | - F Salzano
- Otorhinolaryngologic Unit, San Giovanni di Dio e Ruggi d' Aragona University Hospital, Salerno, Italy
| | - I Dallan
- First Otorhinolaryngologic Unit, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - S Nuzzo
- Biostatistics Unit, G.B. Morgagni - L. Pierantoni Hospital, Forlì - ASL of Romagna, Forli, Italy
| | - C Vicini
- Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni - L. Pierantoni Hospital, Forlì - Infermi Hospital, Faenza - ASL of Romagna, Forli, University of Ferrrara, Italy
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Delgado I, Torres M. Coordination of limb development by crosstalk among axial patterning pathways. Dev Biol 2017; 429:382-386. [DOI: 10.1016/j.ydbio.2017.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/28/2017] [Accepted: 03/05/2017] [Indexed: 10/20/2022]
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17
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Gomez-Pastrana D, Nwokoro C, Delgado I, Aragon C, Chorro-Mari V, Quintana-Gallego M, Pao C. 189 Lung function improvement in children with cystic fibrosis admitted for intravenous antibiotics. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30553-2] [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: 10/19/2022]
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18
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Pastor M, Vazquez C, Quintana-Gallego M, Delgado I, Carro LM, Sanz V, Aguilar A, Girón-Moreno R, Luna C, Villa J, Prados C, Barrio M, Gartner S, Asensio O, Escribano A, Cols M, Gómez A, Pijoan J. 412 Spanish multicentre registry-based study on the phenotype of patients with cystic fibrosis carrying the V232D (c.695T>A) mutation. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30742-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Sánchez-Montañez A, Martínez-Sáez E, de la Banda MGG, Julià N, Quijano-Roy S, Olivé M, García-Arumí E, Gratacós M, Buendía J, Delgado I, Vázquez E, Roig M, Munell F. Muscle magnetic resonance imaging involvement in mitochondrial myopathy due to TK2 deficiency. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Aguilera XP, González C, Nájera-De Ferrari M, Hirmas M, Delgado I, Olea A, Lezaeta L, Montaña A, González P, Hormazábal JC, Fernández J, García C, Herrera T. Tuberculosis in prisoners and their contacts in Chile: estimating incidence and latent infection. Int J Tuberc Lung Dis 2016; 20:63-70. [PMID: 26688530 DOI: 10.5588/ijtld.15.0056] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Contact investigation of tuberculosis (TB) patients in Chilean prisons. OBJECTIVE 1) To estimate TB incidence and the prevalence of latent tuberculous infection (LTBI) among prisoners and their contacts; and 2) to determine factors associated with disease transmission. DESIGN Cross-sectional study conducted in 46 prisons (51% of the total prison population) to assess the prevalence of and risk factors for LTBI among contacts of prisoners newly diagnosed with pulmonary TB. We used in vitro interferon-gamma release assays to establish LTBI and a questionnaire to address risk factors. RESULTS During the 1-year follow-up, we studied 418 contacts of 33 active TB cases. We found high TB incidence (123.9 per 100,000 prisoners) and high LTBI prevalence (29.4%) among contacts. LTBI rates are significantly higher in prison inmates than in non-prisoners (33.2% vs. 15.6%). Male sex, illicit drugs, malnutrition, corticosteroid use, low educational level and sharing a cell with a case increase the risk of LTBI. Multivariate analyses showed that corticosteroid use, duration of incarceration and overcrowding are the most relevant determinants for LTBI among all contacts. CONCLUSIONS Our results confirm that incarceration increases the risk of tuberculous infection and TB disease, and that it was associated not only with origin from vulnerable groups, but also with the prison environment. Reinforcing TB control is essential to prevent TB transmission in prisons.
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Affiliation(s)
- X P Aguilera
- Centro de Epidemiología y Políticas de Salud, Facultad de Medicina, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile
| | - C González
- Centro de Epidemiología y Políticas de Salud, Facultad de Medicina, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile
| | - M Nájera-De Ferrari
- Centro de Epidemiología y Políticas de Salud, Facultad de Medicina, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile
| | - M Hirmas
- Centro de Epidemiología y Políticas de Salud, Facultad de Medicina, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile
| | - I Delgado
- Centro de Epidemiología y Políticas de Salud, Facultad de Medicina, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile
| | - A Olea
- Centro de Epidemiología y Políticas de Salud, Facultad de Medicina, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile
| | - L Lezaeta
- Departamento de Salud Gendarmería de Chile, Santiago, Chile
| | - A Montaña
- Clínica Alemana de Santiago, Santiago, Chile
| | - P González
- Clínica Alemana de Santiago, Santiago, Chile
| | | | - J Fernández
- Instituto de Salud Pública de Chile, Santiago, Chile
| | - C García
- Ministerio de Salud de Chile, Santiago, Chile
| | - T Herrera
- Ministerio de Salud de Chile, Santiago, Chile
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Bordón Cabrera E, Laín A, Gander R, Pérez Lafuente M, Díez Miranda I, Fontecha CG, Seidler L, Delgado I, Cañadas Palazón S, Lloret J. [Vascular interventional radiology: a fundamental procedure for the management of paediatric trauma]. Cir Pediatr 2016; 29:25-30. [PMID: 27911067] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
INTRODUCTION The management of active bleeding with haemodinamic lability in the paediatric trauma patient is difficult and generally leads to damage control surgery. Vascular Interventional Radiology (VIR) techniques are useful for the diagnosis as for the definitive treatment. AIM The aim of our study was to describe our experience and evaluate effectiveness of VIR in the management of the paediatric trauma patient with active bleeding signs. METHODS Retrospective analysis (2003-2014) of politraumatic patients who showed contrast blush on computed tomography and then treated by VIR techniques. RESULTS In the reported study period 16 patients underwent VIR procedures. Medium age was 13 years (5-17). The most frequent lesion mechanism was traffic accident (8 out of 17) and 93,75% were blunt traumas. Findings on initial Computed Tomography were 12 contrast blushes and 2 absences of arterial flow. In 2 cases the contrast blush appeared 48 hours after the accident. Arteriography allowed us to localize the bleeding vessels in all the cases, performing selective or supraselective renal (7), pelvic (5), hepatic (3), splenic (1) and intercostal (1) embolization. One patient required an endoprothesis for renal revascularization. Two cases needed additional surgical procedures (2 nephrectomies) because of complete section of the renal artery (1) and disruption of the ureteropelvic junction (1). One case required hemofiltration in relation to rhabdomyolysis. CONCLUSION In our experience VIR is a valuable diagnostic and therapeutic procedure for the management of paediatric trauma patients, with high effectiveness and a low complication rate.
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Affiliation(s)
- E Bordón Cabrera
- Servicio de Cirugía Pediátrica. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - A Laín
- Servicio de Cirugía Pediátrica. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - R Gander
- Servicio de Cirugía Pediátrica. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - M Pérez Lafuente
- Servicio de Radiología Intervencionista. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - I Díez Miranda
- Servicio de Radiología Intervencionista. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - C G Fontecha
- Servicio de Traumatología y Ortopedia Pediátrica. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - L Seidler
- Servicio de Cuidados Intensivos Pediátricos. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - I Delgado
- Servicio de Radiología Pediátrica. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - S Cañadas Palazón
- Servicio de Urgencias Pediátricas. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
| | - J Lloret
- Servicio de Cirugía Pediátrica. Programa de Trauma Pediátrico. Hospital Universitario Vall d'Hebron. Barcelona
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Saiz-Lopez P, Chinnaiya K, Campa VM, Delgado I, Ros MA, Towers M. An intrinsic timer specifies distal structures of the vertebrate limb. Nat Commun 2015; 6:8108. [PMID: 26381580 PMCID: PMC4582416 DOI: 10.1038/ncomms9108] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 03/07/2015] [Accepted: 07/20/2015] [Indexed: 11/09/2022] Open
Abstract
How the positional values along the proximo-distal axis (stylopod-zeugopod-autopod) of the limb are specified is intensely debated. Early work suggested that cells intrinsically change their proximo-distal positional values by measuring time. Recently, however, it is suggested that instructive extrinsic signals from the trunk and apical ectodermal ridge specify the stylopod and zeugopod/autopod, respectively. Here, we show that the zeugopod and autopod are specified by an intrinsic timing mechanism. By grafting green fluorescent protein-expressing cells from early to late chick wing buds, we demonstrate that distal mesenchyme cells intrinsically time Hoxa13 expression, cell cycle parameters and the duration of the overlying apical ectodermal ridge. In addition, we reveal that cell affinities intrinsically change in the distal mesenchyme, which we suggest results in a gradient of positional values along the proximo-distal axis. We propose a complete model in which a switch from extrinsic signalling to intrinsic timing patterns the vertebrate limb.
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Affiliation(s)
- Patricia Saiz-Lopez
- Instituto de Biomedicina y Biotecnología de Cantabria, IBBTEC (CSIC-Universidad de Cantabria), Santander 39011, Spain
| | - Kavitha Chinnaiya
- Bateson Centre, Department of Biomedical Sciences, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Victor M Campa
- Instituto de Biomedicina y Biotecnología de Cantabria, IBBTEC (CSIC-Universidad de Cantabria), Santander 39011, Spain
| | - Irene Delgado
- Instituto de Biomedicina y Biotecnología de Cantabria, IBBTEC (CSIC-Universidad de Cantabria), Santander 39011, Spain
| | - Maria A Ros
- Instituto de Biomedicina y Biotecnología de Cantabria, IBBTEC (CSIC-Universidad de Cantabria), Santander 39011, Spain.,Departamento de Anatomía y Biología Celular, Facultad de Medicina, Universidad de Cantabria, Santander 39011, Spain
| | - Matthew Towers
- Bateson Centre, Department of Biomedical Sciences, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
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González-Lázaro M, Roselló-Díez A, Delgado I, Carramolino L, Sanguino MA, Giovinazzo G, Torres M. Two new targeted alleles for the comprehensive analysis ofMeis1functions in the mouse. Genesis 2014; 52:967-75. [DOI: 10.1002/dvg.22833] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/27/2014] [Accepted: 10/27/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Mónica González-Lázaro
- Department of Cardiovascular Development and Repair; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
| | - Alberto Roselló-Díez
- Department of Cardiovascular Development and Repair; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
| | - Irene Delgado
- Department of Cardiovascular Development and Repair; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
| | - Laura Carramolino
- Department of Cardiovascular Development and Repair; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
| | - María Angeles Sanguino
- Pluripotent Cell Technology Unit; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
| | - Giovanna Giovinazzo
- Pluripotent Cell Technology Unit; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
| | - Miguel Torres
- Department of Cardiovascular Development and Repair; Centro Nacional de Investigaciones Cardiovasculares, CNIC; Madrid Spain
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Garrido P, Felip E, Delord J, Paz-Ares L, Barlesi F, Arkenau H, Lara P, Paik P, Morgensztern D, Gadgeel S, Reckamp K, Bertino E, Orlov S, Levchenko E, Delgado I, Trigo J, Viteri S, Vansteenkiste J, Kindler H, Lassen U. Multi-Arm, Nonrandomized, Open-Label Phase Ib Study to Evaluate Fp1039/Gsk3052230 with Chemotherapy in Nsclc and Mpm with Deregulated Fgf Pathway Signaling. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu348.25] [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: 11/14/2022] Open
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25
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Delgado I, Carrasco M, Cano E, Carmona R, García-Carbonero R, Marín-Gómez LM, Soria B, Martín F, Cano DA, Muñoz-Chápuli R, Rojas A. GATA4 loss in the septum transversum mesenchyme promotes liver fibrosis in mice. Hepatology 2014; 59:2358-70. [PMID: 24415412 DOI: 10.1002/hep.27005] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 01/08/2014] [Indexed: 01/15/2023]
Abstract
UNLABELLED The zinc finger transcription factor GATA4 controls specification and differentiation of multiple cell types during embryonic development. In mouse embryonic liver, Gata4 is expressed in the endodermal hepatic bud and in the adjacent mesenchyme of the septum transversum. Previous studies have shown that Gata4 inactivation impairs liver formation. However, whether these defects are caused by loss of Gata4 in the hepatic endoderm or in the septum transversum mesenchyme remains to be determined. In this study, we have investigated the role of mesenchymal GATA4 activity in liver formation. We have conditionally inactivated Gata4 in the septum transversum mesenchyme and its derivatives by using Cre/loxP technology. We have generated a mouse transgenic Cre line, in which expression of Cre recombinase is controlled by a previously identified distal Gata4 enhancer. Conditional inactivation of Gata4 in hepatic mesenchymal cells led to embryonic lethality around mouse embryonic stage 13.5, likely as a consequence of fetal anemia. Gata4 knockout fetal livers exhibited reduced size, advanced fibrosis, accumulation of extracellular matrix components and hepatic stellate cell (HSC) activation. Haploinsufficiency of Gata4 accelerated CCl4 -induced liver fibrosis in adult mice. Moreover, Gata4 expression was dramatically reduced in advanced hepatic fibrosis and cirrhosis in humans. CONCLUSIONS Our data demonstrate that mesenchymal GATA4 activity regulates HSC activation and inhibits the liver fibrogenic process.
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Affiliation(s)
- Irene Delgado
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Sevilla, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Barcelona, Spain
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Roselló-Díez A, Arques CG, Delgado I, Giovinazzo G, Torres M. Diffusible signals and epigenetic timing cooperate in late proximo-distal limb patterning. Development 2014; 141:1534-43. [DOI: 10.1242/dev.106831] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Developing vertebrate limbs initiate proximo-distal patterning by interpreting opposing gradients of diffusible signaling molecules. We report two thresholds of proximo-distal signals in the limb bud: a higher threshold that establishes the upper-arm to forearm transition; and a lower one that positions a later transition from forearm to hand. For this last transition to happen, however, the signal environment seems to be insufficient, and we show that a timing mechanism dependent on histone acetylation status is also necessary. Therefore, as a consequence of the time dependence, the lower signaling threshold remains cryptic until the timing mechanism reveals it. We propose that this timing mechanism prevents the distal transition from happening too early, so that the prospective forearm has enough time to expand and form a properly sized segment. Importantly, the gene expression changes provoked by the first transition further regulate proximo-distal signal distribution, thereby coordinating the positioning of the two thresholds, which ensures robustness. This model is compatible with the most recent genetic analyses and underscores the importance of growth during the time-dependent patterning phase, providing a new mechanistic framework for understanding congenital limb defects.
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Affiliation(s)
- Alberto Roselló-Díez
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares, CNIC, c/ Melchor Fernández Almagro, 3, 28029 Madrid, Spain
| | - Carlos G. Arques
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares, CNIC, c/ Melchor Fernández Almagro, 3, 28029 Madrid, Spain
| | - Irene Delgado
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares, CNIC, c/ Melchor Fernández Almagro, 3, 28029 Madrid, Spain
| | - Giovanna Giovinazzo
- Unidad de Tecnología de Células Pluripotentes, Centro Nacional de Investigaciones Cardiovasculares, CNIC, c/ Melchor Fernández Almagro, 3, 28029 Madrid, Spain
| | - Miguel Torres
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares, CNIC, c/ Melchor Fernández Almagro, 3, 28029 Madrid, Spain
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Iglesias E, Camacho M, Delgado I, Lirola M, Bernabeu J, Neth O. AB1143 Successful control of churg-strauss syndrome with omalizumab. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1141] [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: 11/04/2022]
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Carrasco M, Delgado I, Soria B, Martín F, Rojas A. GATA4 and GATA6 control mouse pancreas organogenesis. J Clin Invest 2012; 122:3504-15. [PMID: 23006330 DOI: 10.1172/jci63240] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 07/12/2012] [Indexed: 01/21/2023] Open
Abstract
Recently, heterozygous mutations in GATA6 have been found in neonatal diabetic patients with failed pancreatic organogenesis. To investigate the roles of GATA4 and GATA6 in mouse pancreas organogenesis, we conditionally inactivated these genes within the pancreas. Single inactivation of either gene did not have a major impact on pancreas formation, indicating functional redundancy. However, double Gata4/Gata6 mutant mice failed to develop pancreata, died shortly after birth, and displayed hyperglycemia. Morphological defects in Gata4/Gata6 mutant pancreata were apparent during embryonic development, and the epithelium failed to expand as a result of defects in cell proliferation and differentiation. The number of multipotent pancreatic progenitors, including PDX1+ cells, was reduced in the Gata4/Gata6 mutant pancreatic epithelium. Remarkably, deletion of only 1 Gata6 allele on a Gata4 conditional knockout background severely reduced pancreatic mass. In contrast, a single WT allele of Gata4 in Gata6 conditional knockout mice was sufficient for normal pancreatic development, indicating differential contributions of GATA factors to pancreas formation. Our results place GATA factors at the top of the transcriptional network hierarchy controlling pancreas organogenesis.
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Affiliation(s)
- Manuel Carrasco
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Sevilla, Spain
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Abstract
OBJECTIVE To study the incidence of MS in Chile by examining the hospitalizations across all geographical regions of the country and to examine whether there is a correlation between these rates and the latitude or ultraviolet radiation. METHODS This is a descriptive study examining the national registry of hospitalizations because of MS (code G35 in ICD-10) from January 1, 2001, to December 31, 2006. Incidence rates were calculated by gender and geographical region and standardized to the world population estimated for 2010. RESULTS A total of 6857 hospitalizations were analyzed. There were 935 individuals; 63.9% were women. The mean incidence rate for 2002-2006 period was 0,90 (95% CI: 0.75-1.05). The annualized incidence rates for regions from North to South were as follows: I Tarapaca 0.54 (95% CI: 0.0-1.21), II Antofagasta 0,93 (0.10-1.75), III Atacama 1.07 (0.0-2.31), IV Coquimbo 0.63 (0.01-1.24), V Valparaiso 0.83 (0.38-1.27), VI O'Higgins 0.72 (0.14-1.30), VII Maule 0.52 (0.06-0.98), VIII BIO BIO 0.81 (0.41-1.21), IX Araucanía 0.43 (0.0-0.86), X Los Lagos 0.91 (0.35-1.46), XI Aysen 0.99 (0.0-2.98), XII Magallanes 3.54 (0.57-6.51), and XIII Metropolitana 1.10 (0.84-1.36). There were no significant correlations between hospitalization rates and latitude, except for region XII. UV radiation levels showed significant differences only for region XII. CONCLUSION There is a moderate risk of MS in Chile. The southernmost region showed significantly higher incidence rates than those in the rest of the country (a cluster zone). We did not find any correlation between incidence rates and latitude or UV radiation.
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Affiliation(s)
- V Díaz
- Universidad de Chile, Santiago, Chile.
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Lorenzo PI, Jimenez Moreno CM, Delgado I, Cobo-Vuilleumier N, Meier R, Gomez-Izquierdo L, Berney T, Garcia-Carbonero R, Rojas A, Gauthier BR. Immunohistochemical assessment of Pax8 expression during pancreatic islet development and in human neuroendocrine tumors. Histochem Cell Biol 2011; 136:595-607. [PMID: 21932072 PMCID: PMC3192949 DOI: 10.1007/s00418-011-0866-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [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] [Accepted: 09/02/2011] [Indexed: 12/01/2022]
Abstract
The paired box transcription factor Pax8 is critical for development of the eye, thyroid gland as well as the urinary and reproductive organs. In adult, Pax8 overexpression is associated with kidney, ovarian and thyroid tumors and has emerged as a specific marker for these cancers. Recently, Pax8 expression was also reported in human pancreatic islets and in neuroendocrine tumors, identifying Pax8 as a novel member of the Pax family expressed in the pancreas. Herein, we sought to provide a comprehensive analysis of Pax8 expression during pancreogenesis and in adult islets. Immunohistochemical analysis using the most employed Pax8 polyclonal antibody revealed strong nuclear staining in the developing mouse pancreas and in mature human and mouse islets. Astonishingly, Pax8 mRNA in mouse islets was undetectable while human islets exhibited low levels. These discrepancies raised the possibility of antibody cross-reactivity. This premise was confirmed by demonstrating that the polyclonal Pax8 antibody also recognized the islet-enriched Pax6 protein both by Western blotting and immunohistochemistry. Thus, in islets polyclonal Pax8 staining corresponds mainly to Pax6. In order to circumvent this caveat, a novel Pax8 monoclonal antibody was used to re-evaluate whether Pax8 was indeed expressed in islets. Surprisingly, Pax8 was not detected in neither the developing pancreas or in mature islets. Reappraisal of pancreatic neuroendocrine tumors using this Pax8 monoclonal antibody exhibited no immunostaining as compared to the Pax8 polyclonal antibody. In conclusion, Pax8 is not expressed in the pancreas and cast doubts on the value of Pax8 as a pancreatic neuroendocrine tumor marker.
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Affiliation(s)
- Petra I Lorenzo
- Pancreatic Islet Development and Regeneration Unit, Department of Stem Cells, Andalusian Center for Molecular Biology and Regenerative Medicine, Seville, Spain
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Fisher M, Downie H, Welten MCM, Delgado I, Bain A, Planzer T, Sherman A, Sang H, Tickle C. Comparative analysis of 3D expression patterns of transcription factor genes and digit fate maps in the developing chick wing. PLoS One 2011; 6:e18661. [PMID: 21526123 PMCID: PMC3081307 DOI: 10.1371/journal.pone.0018661] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 03/08/2011] [Indexed: 11/23/2022] Open
Abstract
Hoxd13, Tbx2, Tbx3, Sall1 and Sall3 genes are candidates for encoding antero-posterior positional values in the developing chick wing and specifying digit identity. In order to build up a detailed profile of gene expression patterns in cell lineages that give rise to each of the digits over time, we compared 3 dimensional (3D) expression patterns of these genes during wing development and related them to digit fate maps. 3D gene expression data at stages 21, 24 and 27 spanning early bud to digital plate formation, captured from in situ hybridisation whole mounts using Optical Projection Tomography (OPT) were mapped to reference wing bud models. Grafts of wing bud tissue from GFP chicken embryos were used to fate map regions of the wing bud giving rise to each digit; 3D images of the grafts were captured using OPT and mapped on to the same models. Computational analysis of the combined computerised data revealed that Tbx2 and Tbx3 are expressed in digit 3 and 4 progenitors at all stages, consistent with encoding stable antero-posterior positional values established in the early bud; Hoxd13 and Sall1 expression is more dynamic, being associated with posterior digit 3 and 4 progenitors in the early bud but later becoming associated with anterior digit 2 progenitors in the digital plate. Sox9 expression in digit condensations lies within domains of digit progenitors defined by fate mapping; digit 3 condensations express Hoxd13 and Sall1, digit 4 condensations Hoxd13, Tbx3 and to a lesser extent Tbx2. Sall3 is only transiently expressed in digit 3 progenitors at stage 24 together with Sall1 and Hoxd13; then becomes excluded from the digital plate. These dynamic patterns of expression suggest that these genes may play different roles in digit identity either together or in combination at different stages including the digit condensation stage.
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Affiliation(s)
- Malcolm Fisher
- Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom
| | - Helen Downie
- Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom
| | - Monique C. M. Welten
- Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom
- * E-mail:
| | - Irene Delgado
- Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom
| | - Andrew Bain
- Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom
| | - Thorsten Planzer
- Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom
| | - Adrian Sherman
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian, Scotland, United Kingdom
| | - Helen Sang
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian, Scotland, United Kingdom
| | - Cheryll Tickle
- Division of Cell and Developmental Biology, University of Dundee, Dundee, Scotland, United Kingdom
- Department of Biology & Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom
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Olavarria VV, Delgado I, Hoppe A, Brunser A, Carcamo D, Diaz-Tapia V, Lavados PM. Validity of the NIHSS in predicting arterial occlusion in cerebral infarction is time-dependent. Neurology 2010; 76:62-8. [DOI: 10.1212/wnl.0b013e318203e977] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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González Monte E, Delgado I, Polanco N, Hernández E, Dipalma T, Hernández A, Castillo M, Morales E, Praga M, Morales J, Andrés A. Results of a Living Donor Kidney Promotion Program. Transplant Proc 2010; 42:2837-8. [DOI: 10.1016/j.transproceed.2010.09.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Anguita-Compagnon AT, Dibarrart MT, Palma J, Paredes L, Mosso C, Montalva R, Salas L, Araos D, Delgado I, Majlis A. Mobilization and collection of peripheral blood stem cells: guidelines for blood volume to process, based on CD34-positive blood cell count in adults and children. Transplant Proc 2010; 42:339-44. [PMID: 20172346 DOI: 10.1016/j.transproceed.2009.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
We report 189 mobilizations and 489 collections of peripheral blood stem cells (PBSC) performed in 139 autologous transplantation patients and in 28 donors for allogeneic transplantations whose ages ranged from 2-68 years. We observed a correlation (P < .001; Pearson's coefficient 0.64) between CD34-positive cells and granulocyte-macrophage colony-forming units examined to estimate PBSC. In a subset of 287 collections (97 adults and 49 children) we obtained peripheral blood (PB) CD34-positive cell counts at 2 to 4 hours before leukapheresis. We noted a correlation between PB CD34-positive cell counts before leukapheresis and the number of CD34-positive cells per kilogram of body weight collected in the whole apheresis of the day (P < .001; Pearson's coefficient 0.82). An even better correlation was obtained between PB CD34-positive cells preapheresis and the yield of each individual blood volume (BV) processed (P < .001; Pearson's coefficient 0.87). Healthy donors and patients in each age group behaved similarly. In addition, the collection yield was greater among children than adults. These findings allowed us to develop a simple predictive model to estimate the BV to process for a target dose of CD34-positive cells per kilogram, based on the level of PBSC before apheresis in children and adults.
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Affiliation(s)
- A T Anguita-Compagnon
- Unidad de Trasplante de Progenitores Hematopoyeticos, Clinica Alemana de Santiago, Santiago, Chile.
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Pulsifer MB, Delgado I, Tarbell N, Kuhlthau K, MacDonald SM, Yock TI. Neurocognitive outcomes after proton radiation for pediatric brain tumors. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.9508] [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: 11/20/2022] Open
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36
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Ielpo B, Cabeza J, Jimenez D, Delgado I, Torres AJ. Abdominal pseudocyst complicating incisional hernia repair: our experience and literature review. Hernia 2010; 15:233-7. [PMID: 20165968 DOI: 10.1007/s10029-010-0640-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Accepted: 01/29/2010] [Indexed: 11/25/2022]
Abstract
Giant pseudocyst is a rare complication of incisional hernia repairs whose etiology and incidence remains unknown. We have reviewed all cases of abdominal incisional hernia repair in our abdominal wall unit since its creation 6 years ago. Pseudocyst formation was observed in seven cases out of 871 incisional hernia repair operations. Four of them underwent surgical exploration with excision of the mass. To the best of our knowledge, only 18 cases of giant pseudocyst have been described in the literature. From both our personal experience and the reported literature, we understand that abdominal pseudocyst is an extremely rare or underreported late complication of hernia repair surgery. The complete excision of the cyst and its fibrous wall is the definitive treatment of choice.
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Affiliation(s)
- B Ielpo
- General Surgery 2, Abdominal Wall Unit, Cliníco San Carlos Hospital, Calle Prof. Martin Lagos s/n, 28040, Madrid, Spain.
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Talamillo A, Delgado I, Nakamura T, de-Vega S, Yoshitomi Y, Unda F, Birchmeier W, Yamada Y, Ros MA. Role of Epiprofin, a zinc-finger transcription factor, in limb development. Dev Biol 2009; 337:363-74. [PMID: 19913006 DOI: 10.1016/j.ydbio.2009.11.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 11/03/2009] [Accepted: 11/04/2009] [Indexed: 11/29/2022]
Abstract
The formation and maintenance of the apical ectodermal ridge (AER) is critical for the outgrowth and patterning of the vertebrate limb. In the present work, we have investigated the role of Epiprofin (Epfn/Sp6), a member of the SP/KLF transcription factor family that is expressed in the limb ectoderm and the AER, during limb development. Epfn mutant mice have a defective autopod that shows mesoaxial syndactyly in the forelimb and synostosis (bony fusion) in the hindlimb and partial bidorsal digital tips. Epfn mutants also show a defect in the maturation of the AER that appears flat and broad, with a double ridge phenotype. By genetic analysis, we also show that Epfn is controlled by WNT/b-CATENIN signaling in the limb ectoderm. Since the less severe phenotypes of the conditional removal of b-catenin in the limb ectoderm strongly resemble the limb phenotype of Epfn mutants, we propose that EPFN very likely functions as a modulator of WNT signaling in the limb ectoderm.
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Affiliation(s)
- Ana Talamillo
- Departamento de Anatomía y Biología Celular. Facultad de Medicina. Universidad de Cantabria, 39011 Santander, Spain
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López Martín A, Pérez-Paredes M, Esteban P, Latorre R, Soria F, Lima R, Delgado I, Ruiz Ros A, Pérez Cuadrado E, Carballo Alvarez LF. Transesophageal access to the cardiac cavities and descending thoracic aorta via echoendoscopy. An experimental study. Rev Esp Enferm Dig 2009; 101:601-609. [PMID: 19803662 DOI: 10.4321/s1130-01082009000900002] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE The applications of endoscopic ultrasonography have diversified over recent years. The possibility of reaching cardiac territory has been successfully explored in experimental models, opening up a new field of possibilities for diagnostic and therapeutic interventions that were unthinkable until very recently. The aims set out in this study are to evaluate cardiac anatomy, its approach, the safety of the experimental procedure and the resulting morphological and histological changes after the procedure. MATERIAL AND METHODS The study has been performed on two adult pigs. They have undergone different surgical approaches to the cardiac cavities and descending thoracic aorta with excellent results. RESULTS Different cardiac structures have been identified and operated upon (right auricle, left auricle, left ventricle, cardiac valves), as well as major vessels. The use of contrast, both intracavitary and from a peripheral vein, enabled us to verify the anatomical spaces studied. During the procedures we monitored for arrhythmias, hemodynamic behavior, possibility of infection by obtaining sample hemocultures before and after procedures, and response to punctures. CONCLUSIONS The present study has enabled us to evaluate access to the heart from the esophageal lumen using endoscopic ultrasonography, with results that are very similar to those described in the current bibliography. However, we offer two novelties: puncture of the right auricle through the interauricular partition and puncture of the descending thoracic aorta, both performed with ease and apparent safety.
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Affiliation(s)
- A López Martín
- Sections of Gastroenterology and Cardiology. "Morales Meseguer" University Hospital, Murcia, Spain.
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Galloway JL, Delgado I, Ros MA, Tabin CJ. 06-P011 A reevaluation of X-Irradiation induced phocomelia and proximodistal limb patterning. Mech Dev 2009. [DOI: 10.1016/j.mod.2009.06.237] [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: 11/29/2022]
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Galloway JL, Delgado I, Ros MA, Tabin CJ. A reevaluation of X-irradiation-induced phocomelia and proximodistal limb patterning. Nature 2009; 460:400-4. [PMID: 19553938 PMCID: PMC2711994 DOI: 10.1038/nature08117] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Accepted: 05/05/2009] [Indexed: 11/09/2022]
Abstract
Phocomelia is a devastating, rare congenital limb malformation in which the long bones are shorter than normal, with the upper portion of the limb being most severely affected. In extreme cases, the hands or fingers are attached directly to the shoulder and the most proximal elements (those closest to the shoulder) are entirely missing. This disorder, previously known in both autosomal recessive and sporadic forms, showed a marked increase in incidence in the early 1960s due to the tragic toxicological effects of the drug thalidomide, which had been prescribed as a mild sedative. This human birth defect is mimicked in developing chick limb buds exposed to X-irradiation. Both X-irradiation and thalidomide-induced phocomelia have been interpreted as patterning defects in the context of the progress zone model, which states that a cell's proximodistal identity is determined by the length of time spent in a distal limb region termed the 'progress zone'. Indeed, studies of X-irradiation-induced phocomelia have served as one of the two major experimental lines of evidence supporting the validity of the progress zone model. Here, using a combination of molecular analysis and lineage tracing in chick, we show that X-irradiation-induced phocomelia is fundamentally not a patterning defect, but rather results from a time-dependent loss of skeletal progenitors. Because skeletal condensation proceeds from the shoulder to fingers (in a proximal to distal direction), the proximal elements are differentially affected in limb buds exposed to radiation at early stages. This conclusion changes the framework for considering the effect of thalidomide and other forms of phocomelia, suggesting the possibility that the aetiology lies not in a defect in the patterning process, but rather in progenitor cell survival and differentiation. Moreover, molecular evidence that proximodistal patterning is unaffected after X-irradiation does not support the predictions of the progress zone model.
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Affiliation(s)
- Jenna L Galloway
- Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA
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41
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Galloway JL, Delgado I, Ros MA, Tabin CJ. A reevaluation of X-irradiation induced phocomelia and proximodistal limb patterning. Dev Biol 2009. [DOI: 10.1016/j.ydbio.2009.05.532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Gutiérrez M, González P, Delgado I, Gutiérrez E, González E, Siqueira R, Andrés A, Morales J. Renal Allograft Function and Cardiovascular Risk in Recipients of Kidney Transplantation After Successful Pregnancy. Transplant Proc 2009; 41:2399-402. [DOI: 10.1016/j.transproceed.2009.06.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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García-Algar O, Gálvez F, Gran M, Delgado I, Boada A, Puig C, Vall O. Hábitos alimentarios de niños menores de 2 años según el origen étnico de los progenitores en un área urbana de Barcelona. An Pediatr (Barc) 2009; 70:265-70. [DOI: 10.1016/j.anpedi.2008.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2008] [Accepted: 10/20/2008] [Indexed: 11/16/2022] Open
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Fernández M, Schultz M, Krebs A, Bermudez H, Larach G, Lyng R, Poblete P, Stein C, Delgado I, Bernier P. UP.90: Clinical Outcome of Primary Conservative Treatment for High Grade Non-Muscle Invasive Bladder Cancer. Urology 2008. [DOI: 10.1016/j.urology.2008.08.417] [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: 11/15/2022]
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Delgado I, Rovira Gols A, Martín Martínez C, Escoda MR. [Case imaging: 3. Supratentorial primitive neuroectodermal tumor]. Radiologia 2008; 50:332, 337-8. [PMID: 18783657 DOI: 10.1016/s0033-8338(08)71996-9] [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: 10/21/2022]
Affiliation(s)
- I Delgado
- Servicio de Radiodiagnòstic, UDIAT, Institut Universitari Parc Taulí-UAB, Corporació Parc Taulí, Sabadell, Barcelona, España.
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Delgado I, Domínguez-Frutos E, Schimmang T, Ros MA. The incomplete inactivation of Fgf8 in the limb ectoderm affects the morphogenesis of the anterior autopod through BMP-mediated cell death. Dev Dyn 2008; 237:649-58. [PMID: 18265010 DOI: 10.1002/dvdy.21452] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Here we analyze limb development after the conditional inactivation of Fgf8 from the epiblast, using the previously described MORE (Mox2Cre) line. This line drives variable mosaic recombination of a floxed Fgf8 allele, resulting in a small proportion of AER cells that maintain Fgf8 expression. The phenotype of Mox2Cre;Fgf8 limbs is most similar to that of Msx2Cre;Fgf8 forelimbs, indicating that a small but durable expression of FGF8 is equivalent to an early normal, but transitory, expression. This functional equivalence likely relies on the subsequent Fgf4 upregulation that buffers the differences in the pattern of Fgf8 expression between the two conditional mutants. The molecular analysis of Mox2Cre;Fgf8 limbs shows that, despite Fgf4 upregulation, they develop under reduced FGF signaling. These limbs also exhibit an abnormal area of cell death at the anterior forelimb autopod, overlapping with an ectopic domain of Bmp7 expression, which can explain the abnormal morphogenesis of the anterior autopod.
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Affiliation(s)
- Irene Delgado
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria, C/Herrera Oria s/n, E-39011 Santander, Spain
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Soria F, Delgado I, Crisostomo V, Rioja L, Blas M, Duran E, Arocena J, Uson J. Abstract No. 323: New Combined Approach for Metallic Ureteral Stenting. Experimental Study in Swine. J Vasc Interv Radiol 2008. [DOI: 10.1016/j.jvir.2007.12.372] [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: 10/22/2022] Open
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Figueroa D, Calvo R, Vaisman A, Gallegos M, Carrasco MA, Mardones R, Delgado I. Bipolar radiofrequency in the human meniscus. Comparative study between patients younger and older than 40 years of age. Knee 2007; 14:357-60. [PMID: 17719790 DOI: 10.1016/j.knee.2007.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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] [Received: 01/15/2007] [Revised: 05/16/2007] [Accepted: 05/18/2007] [Indexed: 02/02/2023]
Abstract
PURPOSE To morphohistologically evaluate the effect of four increasing intensities of bipolar radiofrequency (RF) on the human meniscus and to compare the changes seen in the menisci from patients younger and older than 40 years old. METHODS Thirty fresh menisci were divided in two groups. Group 1: 12 menisci from patients younger than 40 y.o.; Group 2: 18 menisci from patients older than 40 y.o. Groups 1 and 2 were divided in four zones and subjected in vitro, for 3 s, to four intensities of bipolar RF energy. The samples were studied macroscopically, and microscopically. RESULTS Thermal changes were present between 0 and 4000 microm from the meniscal surface, with an average of 1699 microm (S.D. 740), and was significantly higher on the ablation than the coagulation group (p<0.001). We found a significant difference between the depth of thermal changes in the menisci from patients younger and older than 40 years old at medium intensities of RF energy (p=0.038 and p=0.044). CONCLUSIONS Although bipolar RF can cause deep thermal changes (up to 4000 microm) on the human meniscus, this effect depends on the magnitude of the energy applied. When comparing the effect between younger and older patients, the changes were deeper in the older group when RF was applied at medium intensities. CLINICAL RELEVANCE Based on our findings, we recommend to exert precaution when applying RF energy at medium intensities in the degenerative meniscus, due to a deeper thermal effect in this group.
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Affiliation(s)
- D Figueroa
- Orthopaedic Surgery Unit, Clínica Alemana de Santiago, Chile.
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Delgado I. P30.22 Event related potentials (ERP) P300 in cognitive evaluation of Parkinson disease. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Khimji I, Lepage C, Zalesky L, Jimenez P, Barbouth D, Elsas L, Delgado I, Briery B, Gordon P, Kleiner G. Combined home enzyme replacement therapy and unrelated cord blood transplant for Hurler’s syndrome (MPSI). Biol Blood Marrow Transplant 2006. [DOI: 10.1016/j.bbmt.2005.11.395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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