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Garrido E, Alqahtani K, Lozouet M, Derrey S, Gilard V. Metastasis of the choroid plexuses: A systematic review of the literature and case illustration. Neurochirurgie 2023; 69:101412. [PMID: 36649887 DOI: 10.1016/j.neuchi.2023.101412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
BACKGROUND Choroid plexus (CP) metastases are an extremely rare condition accounting for less than 1% of brain metastases. Due to its scarcity, little is known about this pathology and its management. Herein, we propose a review of the current literature to help its diagnosis and management. METHODS Through a literature review based on PubMed/MEDLINE database, we reviewed 94 cases of intraventricular metastasis of solid cancer in 28 full-text articles in English from 1980 to 2010. We have reported epidemiological, clinical, radiological, histological data, as well as management strategies and outcomes. A case report of fourth ventricular pulmonary metastasis illustrates this review. RESULTS Intraventricular metastases are most often reported in patients in their 6th decade. The clinical presentation is marked by acute hydrocephalus, more rarely lesional bleeding. Three-quarters of intraventricular metastases develop in lateral ventricle, then respectively in the fourth and third ventricles. Kidney cancer accounts for 45% of the cases. The treatment modalities are surgical removal in case of a single lesion and adjuvant radiotherapy and chemotherapy depending on the primary cancer. The prognosis remains poor due to dissemination via the cerebrospinal fluid. CONCLUSION Multiple choroid plexus metastasis is a rare diagnosis, affecting patients with a specific clinical presentation and a misleading radiological appearance. There is no standard of care for the management of these lesions and surgical approach can be challenging.
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Affiliation(s)
- E Garrido
- Department of neurosurgery, Rouen university hospital, Rouen, France.
| | - K Alqahtani
- Department of neurosurgery, Rouen university hospital, Rouen, France
| | - M Lozouet
- Department of neurosurgery, Rouen university hospital, Rouen, France
| | - S Derrey
- Department of neurosurgery, Rouen university hospital, Rouen, France
| | - V Gilard
- Department of neurosurgery, Rouen university hospital, Rouen, France; UNIROUEN, Inserm U1245, laboratory of microvascular endothelium and neonate brain lesions, Normandie university, Rouen, France
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Montiel-Martínez AG, Vargas-Jerónimo RY, Flores-Romero T, Moreno-Muñoz J, Bravo-Reyna CC, Luqueño-Martínez V, Contreras-Escamilla M, Zamudio-López J, Martínez-Rodríguez S, Barrán-Sánchez F, Villegas-García JC, Barrios-Payán J, Pastor AR, Palomares LA, Esquivel-Guadarrama F, Garrido E, Torres-Vega MA. Baculovirus-mediated expression of a Helicobacter pylori protein-based multiepitope hybrid gene induces a potent B cell response in mice. Immunobiology 2023; 228:152334. [PMID: 36641984 DOI: 10.1016/j.imbio.2023.152334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/05/2023] [Accepted: 01/07/2023] [Indexed: 01/11/2023]
Abstract
Helicobacter pylori is a gram-negative bacterium that is present in over half of the world's population. The colonization of the stomach́s gastric mucosa by H. pylori is related to the onset of chronic gastritis, peptic ulcer, and cancer. The estimated deaths from gastric cancer caused by this bacterial infection are in the 15,000-150,000 range. Current treatment for controlling the colonization of H. pylori includes the administration of two to four antibiotics and a gastric ATPase proton pump inhibitor. Nevertheless, the bacterium has shown increased resistance to antibiotics. Despite an extensive list of attempts to develop a vaccine, no approved vaccine against H. pylori is available. Recombinant viruses are a novel alternative for the control of primary pathogenic agents. In this work, we employed a baculovirus that carries a Thp1 transgene coding for nine H. pylori epitopes, some from the literature, and others were selected in silico from the sequence of H. pylori proteins (carbonic anhydrase, urease B subunit, gamma-glutamyl transpeptidase, Lpp20, Cag7, and CagL). We verified the expression of this hybrid multiepitopic protein in HeLa cells. Mice were inoculated with the recombinant baculovirus Bac-Thp1 using various administration routes: intranasal, intragastric, intramuscular, and a combination of intranasal and intragastric. We identified a strong adjuvant-independent IgG-antibody response in the serum of recombinant baculovirus-Thp1 inoculated mice, which was specific for a strain of H. pylori isolated from a human patient. The bacterium-specific IgG-antibodies were present in sera 125 days after the first vaccine administration. Also, H. pylori-specific IgA-antibodies were found in feces at 82 days after the first inoculation. A baculovirus-based vaccine for H. pylori is promising for controlling this pathogen in humans.
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Affiliation(s)
- Ana G Montiel-Martínez
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico; Posgrado de Ciencias Biológicas, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Roxana Y Vargas-Jerónimo
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico; Departamento de Genética y Biología Molecular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Avenida Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Delegación Gustavo A. Madero, 07360 Ciudad de México, Mexico
| | - Tania Flores-Romero
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Jaime Moreno-Muñoz
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Carlos C Bravo-Reyna
- Departamento de Cirugía Experimental, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Verónica Luqueño-Martínez
- Departamento de Infectología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan 14080 Ciudad de México, Mexico
| | - Mariela Contreras-Escamilla
- Departamento de Investigación Experimental y Bioterio, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Jovani Zamudio-López
- Departamento de Investigación Experimental y Bioterio, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Susana Martínez-Rodríguez
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Fernanda Barrán-Sánchez
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - Juan C Villegas-García
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Jorge Barrios-Payán
- Departamento de Patología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán. Vasco de Quiroga no. 15, col. Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico
| | - A Ruth Pastor
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México. Avenida Universidad 2001, Chamilpa, 62210, Cuernavaca, Morelos, Mexico
| | - Laura A Palomares
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México. Avenida Universidad 2001, Chamilpa, 62210, Cuernavaca, Morelos, Mexico
| | | | - Efraín Garrido
- Departamento de Genética y Biología Molecular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Avenida Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Delegación Gustavo A. Madero, 07360 Ciudad de México, Mexico
| | - Miguel A Torres-Vega
- Departamento de Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga no. 15, col, Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080 Ciudad de México, Mexico.
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Garrido E, Botella de Maglia J, Castillo O. Response to the letter "Acute mountain sickness: Is its prevalence overestimated?". Rev Clin Esp 2022; 222:S2254-8874(22)00037-6. [PMID: 35595652 DOI: 10.1016/j.rceng.2022.02.003] [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] [Received: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/17/2022]
Affiliation(s)
- E Garrido
- Servicio de Hipobaria y Fisiología Biomédica, Universidad de Barcelona, Barcelona, Spain.
| | - J Botella de Maglia
- Servicio de Medicina Intensiva, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - O Castillo
- Instituto Nacional de Biología Andina, Universidad Nacional Mayor de San Marcos, Lima, Perú
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Garrido E, Botella de Maglia J, Castillo O. Réplica a la carta «Mal de montaña agudo. ¿Se sobreestima su prevalencia?». Rev Clin Esp 2022. [DOI: 10.1016/j.rce.2022.02.004] [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: 11/25/2022]
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5
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Newman M, Garrido E, Tsirikos A. 320 The Initial Impact Of COVID-19 On Paediatric Spinal Services Across Scotland. Br J Surg 2021. [PMCID: PMC8524482 DOI: 10.1093/bjs/znab259.454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Background
The COVID-19 pandemic has meant a significant decline in the activities of the paediatric spinal services in Scotland.
Method
All referrals to the Scottish paediatrics spinal service from 1st January 2020 to 30th June 2020 were analysed. Comparison was made to the same period in 2019. All orthotist initial consultations and all paediatrics spinal theatre activity in Scotland from 1st March 2020 to 30th June 2020 was analysed and compared to the previous year.
Results
There was a 64.3% decline in referrals during the first wave of the pandemic in Scotland to the paediatric spinal service. The mean wait time to be seen in 1st clinic for a new referral was 6.56 weeks in 2020 compared to 10.94 in 2019. There were however 60 patients still waiting to be seen. The number of paediatric spinal operations declined by 34% during March to June 2020 when compared to the same months in 2019 There was a reduction of 50% of new paediatric patients seen by orthotists from March – June 2020 when compared to 2019
Conclusions
COVID-19 has had a significant effect on paediatric spinal services in Scotland. This is likely due to a combination of service delivery factors and patient factors. This is likely to result in delays to children getting the care they require for their spinal condition. There will also be a back-log of patients requiring to be seen when services start to re-establish themselves. There are several options available to department to optimise efficiency, such as video consultants and streamlining referral systems.
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Affiliation(s)
- M Newman
- Royal Hospital for Sick Children, Edinburgh, United Kingdom
| | - E Garrido
- Royal Hospital for Sick Children, Edinburgh, United Kingdom
| | - A Tsirikos
- Royal Hospital for Sick Children, Edinburgh, United Kingdom
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Abstract
More than 100 million people ascend to high mountainous areas worldwide every year. At nonextreme altitudes (<5500m), 10-85% of these individuals are affected by acute mountain sickness, the most common disease induced by mild-moderate hypobaric hypoxia. Approximately 140 million individuals live permanently at heights of 2500-5500m, and up to 10% of them are affected by the subacute form of mountain sickness (high-altitude pulmonary hypertension) or the chronic form (Monge's disease), the latter of which is especially common in Andean ethnicities. This review presents the most relevant general concepts of these 3 clinical variants, which can be incapacitating and can result in complications and become life-threatening. Proper prevention, diagnosis, treatment and management of these conditions in a hostile environment such as high mountains are therefore essential.
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Affiliation(s)
- E Garrido
- Servicio de Hipobaria y Fisiología Biomédica, Universidad de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain; Instituto de Estudios de Medicina de Montaña (IEMM), Barcelona, Spain.
| | - J Botella de Maglia
- Servicio de Medicina Intensiva, Hospital Universitario y Politécnico La Fe, Valencia, Spain; Instituto de Estudios de Medicina de Montaña (IEMM), Barcelona, Spain
| | - O Castillo
- Instituto Nacional de Biología Andina, Universidad Nacional Mayor de San Marcos, Lima, Peru
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Abstract
High-risk human papillomaviruses (e.g., HPV16 and 18) are associated with cervical cancer occurrence and development. The early viral gene E2 encodes a protein involved in several key processes in HPV biology, such as replication, genome segregation, and viral gene transcription. E2's presence also affects the expression of a variety of cellular genes involved in a wide range of biological processes, including cell cycle regulation and apoptosis, which are mediated by E2's interaction with cellular proteins. In this report, a lentiviral system was used to express the HPV16 E2 gene in the HPV-negative C-33A cell line for several weeks. E2 expression was measured by RT-qPCR and its biological activity was evaluated using a reporter gene. In HPV16 E2-positive cells, we observed a statistically significant increase in mRNA and protein levels of TAF1 and p27, a basal transcription factor and one of its target genes, respectively. To our knowledge, this is the first study showing that the viral protein HPV16 E2 upregulates TAF1 expression. This suggests that E2's expression promotes a transcriptionally-favorable cellular environment that allows HPV to successfully complete its replication cycle. Keywords: HPV16; E2 protein; transcription; TAF1 regulation.
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Garrido E, Botella de Maglia J, Castillo O. Acute, subacute and chronic mountain sickness. Rev Clin Esp 2020; 221:S0014-2565(20)30064-3. [PMID: 32197780 DOI: 10.1016/j.rce.2019.12.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 10/16/2019] [Accepted: 12/16/2019] [Indexed: 11/20/2022]
Abstract
More than 100 million people ascend to high mountainous areas worldwide every year. At nonextreme altitudes (<5500 m), 10-85% of these individuals are affected by acute mountain sickness, the most common disease induced by mild-moderate hypobaric hypoxia. Approximately 140 million individuals live permanently at heights of 2500-5500 m, and up to 10% of them are affected by the subacute form of mountain sickness (high-altitude pulmonary hypertension) or the chronic form (Monge's disease), the latter of which is especially common in Andean ethnicities. This review presents the most relevant general concepts of these 3 clinical variants, which can be incapacitating and can result in complications and become life-threatening. Proper prevention, diagnosis, treatment and management of these conditions in a hostile environment such as high mountains are therefore essential.
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Affiliation(s)
- E Garrido
- Servicio de Hipobaria y Fisiología Biomédica, Universidad de Barcelona, L'Hospitalet de Llobregat, Barcelona, España; Instituto de Estudios de Medicina de Montaña (IEMM), Barcelona, España.
| | - J Botella de Maglia
- Servicio de Medicina Intensiva, Hospital Universitario y Politécnico La Fe, Valencia, España; Instituto de Estudios de Medicina de Montaña (IEMM), Barcelona, España
| | - O Castillo
- Instituto Nacional de Biología Andina, Universidad Nacional Mayor de San Marcos, Lima, Perú
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Hove D, Garrido E, Sarriguren P, Fedorov DV, Fynbo HOU, Jensen AS, Zinner NT. Emergence of Clusters: Halos, Efimov States, and Experimental Signals. Phys Rev Lett 2018; 120:052502. [PMID: 29481154 DOI: 10.1103/physrevlett.120.052502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 10/01/2017] [Indexed: 06/08/2023]
Abstract
We investigate the emergence of halos and Efimov states in nuclei by use of a newly designed model that combines self-consistent mean-field and three-body descriptions. Recent interest in neutron heavy calcium isotopes makes ^{72}Ca (^{70}Ca+n+n) an ideal realistic candidate on the neutron dripline, and we use it as a representative example that illustrates our broadly applicable conclusions. By smooth variation of the interactions we simulate the crossover from well-bound systems to structures beyond the threshold of binding, and find that halo configurations emerge from the mean-field structure for three-body binding energy less than ∼100 keV. Strong evidence is provided that Efimov states cannot exist in nuclei. The structure that bears the most resemblance to an Efimov state is a giant halo extending beyond the neutron-core scattering length. We show that the observable large-distance decay properties of the wave function can differ substantially from the bulk part at short distances, and that this evolution can be traced with our combination of few- and many-body formalisms. This connection is vital for interpretation of measurements such as those where an initial state is populated in a reaction or by a beta decay.
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Affiliation(s)
- D Hove
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - E Garrido
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid, Spain
| | - P Sarriguren
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid, Spain
| | - D V Fedorov
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - H O U Fynbo
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - A S Jensen
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
| | - N T Zinner
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
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Bernal-Ramos G, Hernández-Gallegos E, Vera E, Chávez-López MDG, Zúñiga-García V, Sánchez-Pérez Y, Garrido E, Camacho J. Astemizole inhibits cell proliferation in human prostate tumorigenic cells expressing ether à-go-go-1 potassium channels. Cell Mol Biol (Noisy-le-grand) 2017; 63:11-13. [DOI: 10.14715/cmb/2017.63.12.4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 12/14/2017] [Accepted: 12/12/2017] [Indexed: 11/18/2022]
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Bernal-Ramos G, Hernández-Gallegos E, Vera E, Chávez-López MDG, Zúñiga-García V, Sánchez-Pérez Y, Garrido E, Camacho J. Astemizole inhibits cell proliferation in human prostate tumorigenic cells expressing ether à-go-go-1 potassium channels. Cell Mol Biol (Noisy-le-grand) 2017. [DOI: 10.14715/10.14715/cmb/2017.63.12.4] [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: 11/18/2022]
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Chávez-López MDG, Zúñiga-García V, Hernández-Gallegos E, Vera E, Chasiquiza-Anchatuña CA, Viteri-Yánez M, Sanchez-Ramos J, Garrido E, Camacho J. The combination astemizole-gefitinib as a potential therapy for human lung cancer. Onco Targets Ther 2017; 10:5795-5803. [PMID: 29263676 PMCID: PMC5724417 DOI: 10.2147/ott.s144506] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Lung cancer is a major cause of cancer mortality. Thus, novel therapies are urgently needed. Repositioning of old drugs is gaining great interest in cancer treatment. Astemizole is an antihistamine proposed to be repositioned for cancer therapy. This drug targets several molecules involved in cancer including histamine receptors, ABC transporters and the potassium channels Eag1 and HERG. Astemizole inhibits the proliferation of different cancer cells including those from cervix, breast, leukemia and liver. Gefitinib is widely used to treat lung cancer; however, no response or drug resistance occurs in many cases. Here, we studied the combined effect of astemizole and gefitinib on the proliferation, survival, apoptosis and gene and protein expression of Eag1 channels in the human lung cancer cell lines A549 and NCI-H1975. Cell proliferation and survival were studied by the MTT method and the colony formation assay, respectively; apoptosis was investigated by flow cytometry. Gene expression was assessed by real-time polymerase chain reaction (RT-PCR), and protein expression was studied by Western blot analysis and immunocytochemistry. We obtained the inhibitory concentrations 20 and 50 (IC20 and IC50, respectively) values for each drug from the cell proliferation experiments. Drug combination at their IC20 had a superior effect by reducing cell proliferation and survival in up to 80% and 100%, respectively. The drugs alone did not affect apoptosis of H1975 cells, but the drug combination at their IC20 increased apoptosis roughly four times in comparison to the effect of the drugs alone. Eag1 mRNA levels and protein expression were decreased by the drug combination in A549 cells, and astemizole induced subcellular localization changes of the channel protein in these cells. Our in vitro studies strongly suggest that the combination astemizole–gefitinib may be a novel and promising therapy for lung cancer patients.
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Affiliation(s)
- María de Guadalupe Chávez-López
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
| | - Violeta Zúñiga-García
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
| | - Elisabeth Hernández-Gallegos
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
| | - Eunice Vera
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
| | - Carmen Alexandra Chasiquiza-Anchatuña
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico.,Department of Life Sciences and Agriculture, University of the Armed Forces ESPE, Sangolquí, Ecuador
| | - Marco Viteri-Yánez
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico.,Department of Life Sciences and Agriculture, University of the Armed Forces ESPE, Sangolquí, Ecuador
| | - Janet Sanchez-Ramos
- Department of Genetics and Molecular Biology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
| | - Efraín Garrido
- Department of Genetics and Molecular Biology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
| | - Javier Camacho
- Department of Pharmacology, Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico City, Mexico
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Ortiz-Sánchez E, Santiago-López L, Cruz-Domínguez VB, Toledo-Guzmán ME, Hernández-Cueto D, Muñiz-Hernández S, Garrido E, De León DC, García-Carrancá A. Characterization of cervical cancer stem cell-like cells: phenotyping, stemness, and human papilloma virus co-receptor expression. Oncotarget 2016; 7:31943-54. [PMID: 27008711 PMCID: PMC5077987 DOI: 10.18632/oncotarget.8218] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [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: 09/23/2015] [Accepted: 03/06/2016] [Indexed: 02/07/2023] Open
Abstract
Cancer stem cells (CSC) exhibit high tumorigenic capacity in several tumor models. We have now determined an extended phenotype for cervical cancer stem cells. Our results showed increased CK-17, p63+, AII+, CD49f+ expression in these cells, together with higher Aldehyde dehydrogenase (ALDHbright)activity in Cervical CSC (CCSC) enriched in cervospheres. An increase in stem cell markers, represented by OCT-4, Nanog, and β-catenin proteins, was also observed, indicating that under our culture conditions, CCSC are enriched in cervospheres, as compared to monolayer cultures. In addition, we were able to show that an increased ALDHbright activity correlated with higher tumorigenic activity. Flow cytometry and immunflorescence assays demonstrated that CCSC in cervosphere cultures contain a sub-population of cells that contain Annexin II, a Human papillomavirus (HPV) co-receptor. Taken together, under our conditions there is an increase in the number of CCSC in cervosphere cultures which exhibit the following phenotype: CK-17, p63+, AII+, CD49f+ and high ALDH activity, which in turn correlates with higher tumorigenicity. The presence of Annexin II and CD49f in CCSC opens the possibility that normal cervical stem cells could be the initial target of infection by high risk HPV.
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Affiliation(s)
- Elizabeth Ortiz-Sánchez
- 1 Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Secretaría de Salud (SS), México City, Mexico
| | - Luz Santiago-López
- 1 Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Secretaría de Salud (SS), México City, Mexico
| | - Verónica B. Cruz-Domínguez
- 1 Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Secretaría de Salud (SS), México City, Mexico
| | - Mariel E. Toledo-Guzmán
- 1 Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Secretaría de Salud (SS), México City, Mexico
| | - Daniel Hernández-Cueto
- 2 Laboratorio de Marcadores Moleculares, Hospital Infantil de México “Federico Gómez”, SA, Mexico City, Mexico
| | - Saé Muñiz-Hernández
- 1 Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Secretaría de Salud (SS), México City, Mexico
| | - Efraín Garrido
- 3 Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - David Cantú De León
- 4 Subdirección de Investigación Clínica, Instituto Nacional de Cancerología, Secretaría de Salud (SS), México City, Mexico
| | - Alejandro García-Carrancá
- 5 Unidad de Investigación Biomédica en Cáncer, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM) and Instituto Nacional de Cancerología, Secretaría de Salud (SS), Mexico City, Mexico
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Garrido E, Jensen A, Fedorov D. Rotational character of the12Cspectrum investigated through inelastic cross sections via photon emission. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611306005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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15
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Rodriguez O, Garrido E, Labrandero C, Blanco C, Grueso J, Mendoza A, Albert D, Del Cerro M. Pulmonary Vasodilatador Treatment in Failing Fontan: Data from the Spanish Registry for Pediatric Pulmonary Hypertension (REHIPED). Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571898] [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]
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16
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Garrido E, Llamas-Guzmán LP, Fornoni J. The effect of frequency-dependent selection on resistance and tolerance to herbivory. J Evol Biol 2015; 29:483-9. [PMID: 26411698 DOI: 10.1111/jeb.12768] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 09/22/2015] [Indexed: 12/01/2022]
Abstract
Negative frequency-dependent selection (FDS), where rare genotypes are favoured by selection, is commonly invoked as a mechanism explaining the maintenance of genetic variation in plant defences. However, empirical tests of FDS in plant-herbivore interactions are lacking. We evaluated whether the oviposition preference of the specialist herbivore Lema daturaphila is a mechanism through which this herbivore can exert FDS on its host plant Datura stramonium. The frequency of contrasting resistance-tolerance strategies was manipulated within experimental plots, and the plants were exposed to a similar initial density of their natural herbivore. Herbivore oviposition preference and final density, as well as plant damage and seed production, were estimated. Overall, we found that the high-resistant-low-tolerant genotypes produced four times more seeds when common than when rare, whereas the high-tolerant-low-resistant genotypes achieved twice its fitness when rare than when common. This pattern was the result of differential oviposition preferences. In addition, when the high-resistant-low-tolerant genotypes were common, there was a three-fold decreased in herbivore final density which led to a decrease in damage level by 10%. Thus, in our experiment positive FDS seems to favour resistance over tolerance. We discuss how this result would change if the extent of herbivore local adaptation and damage modify the pattern of positive FDS acting on resistance and the optimal allocation to tolerance.
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Affiliation(s)
- E Garrido
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - L P Llamas-Guzmán
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, México, Distrito Federal, México
| | - J Fornoni
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, México, Distrito Federal, México
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Pozo-Molina G, Ponciano-Gómez A, Rivera-González GC, Hernández-Zavala A, Garrido E. Arsenic-induced S phase cell cycle lengthening is associated with ROS generation, p53 signaling and CDC25A expression. Chem Biol Interact 2015; 238:170-9. [PMID: 26148435 DOI: 10.1016/j.cbi.2015.06.040] [Citation(s) in RCA: 12] [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: 04/18/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 11/24/2022]
Abstract
Cellular response to arsenic is strongly dependent on p53 functional status. Primarily arresting the cell cycle in G1 or G2/M phases, arsenic treatment also induces an increase in the S-phase time in wild-type p53 cells. In contrast, cells with a non-functional p53 display only a subtle increase in the S phase, indicating arsenic differentially affects the cell cycle depending on p53 status. Importantly, it has been reported that arsenic induces reactive oxygen species (ROS), a process counteracted by p53. To evaluate the participation of p53 in the lengthening of the S phase and the connection between the transient cell cycle arrest and oxidative stress, we evaluated the cell response to arsenic in MCF-7 and H1299 cells, and analyzed p53's role as a transcription factor in regulating genes involved in ROS reduction and S phase transition. Herein, we discovered that arsenic induced an increase in the population of S phase cells that was dependent on the presence and transcriptional activity of p53. Furthermore, for the first time, we demonstrate that arsenic activates p53-dependent transcription of ROS detoxification genes, such as SESN1, and by an indirect mechanism involving ATF3, genes that could be responsible for the S phase cell cycle arrest, such as CDC25A.
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Affiliation(s)
- Glustein Pozo-Molina
- Department of Genetics and Molecular Biology, CINVESTAV-IPN, Mexico City, Mexico; Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla, Edo. de México, Mexico.
| | | | | | | | - Efraín Garrido
- Department of Genetics and Molecular Biology, CINVESTAV-IPN, Mexico City, Mexico.
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Ganesan S, Karampalis C, Garrido E, Tsirikos AI. Infantile developmental thoracolumbar kyphosis with segmental subluxation of the spine. Bone Joint J 2015; 97-B:982-7. [DOI: 10.1302/0301-620x.97b7.35665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Acute angulation at the thoracolumbar junction with segmental subluxation of the spine occurring at the level above an anteriorly hypoplastic vertebra in otherwise normal children is a rare condition described as infantile developmental thoracolumbar kyphosis. Three patient series with total of 18 children have been reported in the literature. We report five children who presented with thoracolumbar kyphosis and discuss the treatment algorithm. We reviewed the medical records and spinal imaging at initial clinical presentation and at minimum two-year follow-up. The mean age at presentation was eight months (two to 12). All five children had L2 anterior vertebral body hypoplasia. The kyphosis improved spontaneously in three children kept under monitoring. In contrast, the deformity was progressive in two patients who were treated with bracing. The kyphosis and segmental subluxation corrected at latest follow-up (mean age 52 months; 48 to 60) in all patients with near complete reconstitution of the anomalous vertebra. The deformity and radiological imaging on a young child can cause anxiety to both parents and treating physicians. Diagnostic workup and treatment algorithm in the management of infantile developmental thoracolumbar kyphosis is proposed. Observation is indicated for non-progressive kyphosis and bracing if there is evidence of kyphosis and segmental subluxation deterioration beyond walking age. Surgical stabilisation of the spine can be reserved for severe progressive deformities unresponsive to conservative treatment.Cite this article: Bone Joint J 2015;97-B:982–7.
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Affiliation(s)
- S. Ganesan
- Royal Hospital for Sick Children, Sciennes Road, Edinburgh EH9 1LF, UK
| | - C. Karampalis
- Royal Hospital for Sick Children, Sciennes Road, Edinburgh EH9 1LF, UK
| | - E. Garrido
- Royal Hospital for Sick Children, Sciennes Road, Edinburgh EH9 1LF, UK
| | - A. I. Tsirikos
- Royal Hospital for Sick Children, Sciennes Road, Edinburgh EH9 1LF, UK
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Feliciano M, Maronezi M, Brito M, Simões A, Maciel G, Castanheira T, Garrido E, Uscategui R, Miceli N, Vicente W. Doppler and Elastography as complementary diagnostic methods for mammary neoplasms in female cats. ARQ BRAS MED VET ZOO 2015. [DOI: 10.1590/1678-4162-8114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Pineda-Gómez D, Garrido E, Chávez P, Salcedo M. [Detection of microRNAs seed sequences within human papillomavirus genomes]. Rev Med Inst Mex Seguro Soc 2015; 53 Suppl 2:S140-S153. [PMID: 26462509] [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: 06/05/2023]
Abstract
In this paper we are reporting for the first time the presence of seed sequences of human and viral microRNAs embedded within both high and low risk human papillomavirus (HPV) genomes. These seed sequences have high oncogenic potential. They were found using an in silico analysis based on the microRNA sequences added to Sanger's database. Among these sequences, it was observed a potential fingerprint harbouring several repeated sequences of microRNA 297 (miR-297) within the LCR region of HPV types 16, 18, 33, 45 and 52. Further analyses were performed for low risk HPV types 6 and 11 and we observed that the probable fingerprint was absent in HPV11, even when we detected other repeated sequences of miR-363. According to these findings, besides the fact that we detected the presence of microRNA sequences within HPV genomes, we suggest a common putative viral mechanism of gene expression regulation shared among human virus.
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Affiliation(s)
- David Pineda-Gómez
- Unidad de Investigación Médica en Enfermedades Oncológicas, Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Distrito Federal, México.
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Ounnoughene N, Somme S, Schlanger S, Carlier E, Adda R, Aoustin L, Boudjedir K, Garrido E, Sandid I, Pouchol E, Ferry N. Effets indésirables graves chez les donneurs de sang (EIGD) : analyse des EIGD locaux de la base e-Fit. Transfus Clin Biol 2014. [DOI: 10.1016/j.tracli.2014.08.056] [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: 11/26/2022]
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Sandid I, Lamour B, Chevalier G, Garrido E, Ounnoughene N, Boudjedir K, Adda R, Pouchol E, Benkebil M, Aoustin L, Labbe D, Ferry N. L’application e-fit de déclaration en hémovigilance : évolution continue au service des utilisateurs. Transfus Clin Biol 2014. [DOI: 10.1016/j.tracli.2014.08.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Affiliation(s)
| | - F.N. Gava
- Universidade Estadual Paulista Júlio de Mesquita Filho; Unesp
| | - E. Garrido
- Universidade Estadual Paulista Júlio de Mesquita Filho; Unesp
| | - A.L.B. Galvão
- Universidade Estadual Paulista Júlio de Mesquita Filho; Unesp
| | - A.A. Camacho
- Universidade Estadual Paulista Júlio de Mesquita Filho; Unesp
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Villanueva-Toledo J, Ponciano-Gómez A, Ortiz-Sánchez E, Garrido E. Side populations from cervical-cancer-derived cell lines have stem-cell-like properties. Mol Biol Rep 2014; 41:1993-2004. [PMID: 24420854 DOI: 10.1007/s11033-014-3047-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Accepted: 01/04/2014] [Indexed: 02/07/2023]
Abstract
The target cells for the transforming mutations caused by high-risk human papillomavirus (HPV) infection could be the stem cells of the uterine cervical epithelium, generating particular cancer stem cells (CSCs). The aim of this study was to identify and characterize the CSCs from cervical-cancer-derived cell lines. The ability of SiHa, CaLo, and C-33A cell lines to efflux Hoechst 33342 was evaluated by flow cytometry and cells from the corresponding side populations (SPs) and nonside populations (NSPs) were analyzed for their cell-cycle status (pyronin Y) and their mRNA levels of ABC transporter family members (with qPCR). Specific markers (α6-integrin(bri)/CD71(dim), CK17) of normal epithelial stem cells were evaluated by flow cytometry. The biological properties of these cells were analyzed, including their colony heterogeneity, repopulation, and anchorage-independent colony formation. We identified SPs (around 3 %) in the SiHa and CaLo cell lines, more than 70 % of which were in G0 phase and strongly expressed ABC transporters (predominantly ABCG2 and ABCB1). The SP from CaLo cells showed an α6-integrin(bri)/CD(dim) pattern, whereas the SP from the SiHa cells showed an α6-integrin(-)/CD(dim) pattern. Recultured cells from the SPs of both cell lines generated both SPs and NSPs, and had higher clonogenic potential to form mainly holoclones and greater colony-forming efficiency under anchorage-independent growth conditions than the cells from the NSPs or total cell populations. Interestingly, we identified no SP in the HPV-uninfected C-33A cell line, and it did not express ABCG2 or other members of the ABC transporters (ABCB1, ABCC1, or ABCA3).
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Affiliation(s)
- Jairo Villanueva-Toledo
- Laboratory of Research in Cancer Molecular and Cell Biology, Departamento de Genética y Biología Molecular, CINVESTAV-IPN, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico, DF, Mexico,
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Abstract
The aim of this study was to describe the clinical, ultrasound and histological findings of hydrallantois in a Pug bitch. On the 56th day of pregnancy the patient presented pronounced abdominal distention, lethargy, anorexia and dyspnea. The ultrasound revealed the presence of abnormal fluid accumulation within the fetal membranes, especial in the allantois, which was incompatible with the 8th week of pregnancy in bitches. The macroscopic exam during the C-section, distention of the fetal membranes and accumulation of fluid within the allantois was observed. The precise amount of liquid could not be assessed due to the surgical procedure. All neonates of our case report were normal at the initial physical exam. The histologic exam revealed normal placenta. In conclusion, clinical and ultrasound assessment were able to diagnose hydrallantois in a canine patient.
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Romero-Tlalolini MA, Chávez Olmos P, Garrido E. Differential DNA methylation patterns in the CD86 gene controls its constitutive expression in keratinocytes. Biochem Biophys Res Commun 2013; 438:54-60. [PMID: 23867827 DOI: 10.1016/j.bbrc.2013.07.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 07/08/2013] [Indexed: 01/12/2023]
Abstract
The interaction of B7 family members with appropriate receptors is essential for an effective T cell response. CD80 and CD86 are the principal co-stimulatory molecules of this family and they are mainly expressed on professional antigen presenting cells (APCs), but also on several non-lymphoid cells. CD86 is constitutively expressed in keratinocytes from the spinous layer of normal cervical epithelium. However, the mechanisms that control the expression of this gene in epithelial cells remain unknown. We analyzed the DNA methylation status of the CD86 promoter and a CpG island located in the upstream intergenic region in keratinocyte-derived cell lines. In those cell lines where CD86 is expressed, a high degree of methylation in the CpG island was observed. However, a CpG dinucleotide within the cAMP response element (CRE) in the promoter region was consistently unmethylated and associated to the transcription factor CREB, as demonstrated by ChIP assays. The opposite methylation pattern was observed in cell lines where CD86 is not expressed, affecting also the binding of CREB. The analysis of the DNA methylation pattern of this gene in cells from the spinous and basal layers of normal cervical epithelium showed a similar profile to that observed in cell lines with and without expression of CD86 respectively. Our results indicate that the methylation pattern in the CD86 promoter and CpG island is closely related to the expression of this co-stimulatory molecule in keratinocytes.
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Affiliation(s)
- M A Romero-Tlalolini
- Department of Genetics and Molecular Biology, CINVESTAV-IPN, Mexico City, Mexico.
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Casanova MJ, Chaparro M, Domènech E, Barreiro-de Acosta M, Bermejo F, Iglesias E, Gomollón F, Rodrigo L, Calvet X, Esteve M, García-Planella E, García-López S, Taxonera C, Calvo M, López M, Ginard D, Gómez-García M, Garrido E, Pérez-Calle JL, Beltrán B, Piqueras M, Saro C, Botella B, Dueñas C, Ponferrada A, Mañosa M, García-Sánchez V, Maté J, Gisbert JP. Safety of thiopurines and anti-TNF-α drugs during pregnancy in patients with inflammatory bowel disease. Am J Gastroenterol 2013; 108:433-40. [PMID: 23318480 DOI: 10.1038/ajg.2012.430] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [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] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The safety of thiopurines and anti-tumor necrosis factor-α (TNF-α) drugs during pregnancy remains controversial, as the experience with these drugs in this situation is limited. Our aim is to assess the safety of thiopurines and anti-TNF-α drugs for the treatment of inflammatory bowel disease (IBD) during pregnancy. METHODS Retrospective, multicenter study in IBD patients. Pregnancies were classified according to the therapeutic regimens during pregnancy or during the 3 months before the conception: non-exposed group, pregnancies exposed to thiopurines alone (group A), and pregnancies exposed to anti-TNF-α drugs (group B). An unfavorable Global Pregnancy Outcome (GPO) was considered if pregnancy developed with obstetric complications in the mother and in the newborn. RESULTS A total of 187 pregnancies in the group A, 66 pregnancies in the group B, and 318 pregnancies in the non-exposed group were included. The rate of unfavorable GPO was different among the three groups (31.8% in non-exposed group, 21.9% in group A, and 34.8% in group B), being lower in pregnancies under thiopurines than among non-exposed (P = 0.01). The rate of pregnancy complications was similar among the three groups (27.7% in non-exposed, 20.9% in group A, and 30.3% in group B). The rate of neonatal complications was different among the three groups (23.3% in non-exposed group, 13.9% in group A, and 21.2% in group B), being lower in pregnancies under thiopurines than among non-exposed (P = 0.01). In the multivariate analysis, the treatment with thiopurines (odds ratio = 0.6; 95% confidence interval = 0.4-0.9, P = 0.02) was the only predictor of favorable GPO, whereas maternal age >35 years at conception was the only predictor of unfavorable GPO. The treatment with anti-TNF-α drugs was not associated with an unfavorable GPO. CONCLUSION The treatment with thiopurines and anti-TNF-α drugs does not seem to increase the risk of complications during pregnancy and does seem to be safe for the newborn.
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Affiliation(s)
- M J Casanova
- Department of Gastroenterology, Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, IP, Madrid, Spain
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Garrido E, Borges F, Goulart M, Garrido J. Editorial (Hot Topic: Electrochemistry and Antioxidants). Comb Chem High Throughput Screen 2013; 16:83. [DOI: 10.2174/1386207311316020001] [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: 11/22/2022]
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Garrido E, Haddad F. 276 PRODUCTION CROSS SECTION MEASUREMENTS OF 47SC AND OTHER RESIDUES IN PROTON INDUCED REACTION FROM 18 MEV TO 70 MEV. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70240-2] [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: 11/25/2022]
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Fernández-Sánchez V, Pelayo R, Flores-Guzmán P, Flores-Figueroa E, Villanueva-Toledo J, Garrido E, Ruiz-Sánchez E, Alvarez-Sanchez E, Mayani H. In vitro effects of stromal cells expressing different levels of Jagged-1 and Delta-1 on the growth of primitive and intermediate CD34+ cell subsets from human cord blood. Blood Cells Mol Dis 2011; 47:205-13. [DOI: 10.1016/j.bcmd.2011.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 08/05/2011] [Accepted: 08/08/2011] [Indexed: 01/14/2023]
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Villarreal-Silva M, Centeno-Cruz F, Suárez-Sánchez R, Garrido E, Cisneros B. Knockdown of dystrophin Dp71 impairs PC12 cells cycle: localization in the spindle and cytokinesis structures implies a role for Dp71 in cell division. PLoS One 2011; 6:e23504. [PMID: 21886794 PMCID: PMC3158767 DOI: 10.1371/journal.pone.0023504] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Accepted: 07/18/2011] [Indexed: 12/22/2022] Open
Abstract
The function of dystrophin Dp71 in neuronal cells remains to be established. Previously, we revealed the involvement of this protein in both nerve growth factor (NGF)-induced neuronal differentiation and cell adhesion by isolation and characterization of PC12 neuronal cells with depleted levels of Dp71. In this work, a novel phenotype of Dp71-knockdown cells was characterized, which is their delayed growth rate. Cell cycle analyses revealed an altered behavior of Dp71-depleted cells, which consists of a delay in G0/G1 transition and an increase in apoptosis during nocodazole-induced mitotic arrest. Dp71 associates with lamin B1 and β-dystroglycan, proteins involved in aspects of the cell division cycle; therefore, we compared the distribution of Dp71 with that of lamin B1 and β-dystroglycan in PC12 cells at mitosis and cytokinesis by means of immunofluorescence and confocal microscopy analysis. All of these three proteins exhibited a similar immunostaining pattern, localized at mitotic spindle, cleavage furrow, and midbody. It is noteworthy that a drastic decreased staining in mitotic spindle, cleavage furrow, and midbody was observed for both lamin B1 and β-dystroglycan in Dp71-depleted cells. Furthermore, we demonstrated the interaction of Dp71 with lamin B1 in PC12 cells by immunoprecipitation and pull-down assays, and importantly, we revealed that knockdown of Dp71 expression caused a marked reduction in lamin B1 levels and altered localization of the nuclear envelope protein emerin. Our data indicate that Dp71 is a component of the mitotic spindle and cytokinesis multi-protein apparatuses that might modulate the cell division cycle by affecting lamin B1 and β-dystroglycan levels.
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Affiliation(s)
- Marcela Villarreal-Silva
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), México Distrito Federal, México
| | - Federico Centeno-Cruz
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), México Distrito Federal, México
- Laboratorio de Enfermedades Complejas, Instituto Nacional de Medicina Genómica, México Distrito Federal, México
| | - Rocío Suárez-Sánchez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), México Distrito Federal, México
- Departamento de Genética, Instituto Nacional de Rehabilitación, México Distrito Federal, México
| | - Efraín Garrido
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), México Distrito Federal, México
| | - Bulmaro Cisneros
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), México Distrito Federal, México
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Ramírez-Salazar E, Centeno F, Nieto K, Valencia-Hernández A, Salcedo M, Garrido E. HPV16 E2 could act as down-regulator in cellular genes implicated in apoptosis, proliferation and cell differentiation. Virol J 2011; 8:247. [PMID: 21599968 PMCID: PMC3127837 DOI: 10.1186/1743-422x-8-247] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Accepted: 05/20/2011] [Indexed: 12/26/2022] Open
Abstract
Background Human Papillomavirus (HPV) E2 plays several important roles in the viral cycle, including the transcriptional regulation of the oncogenes E6 and E7, the regulation of the viral genome replication by its association with E1 helicase and participates in the viral genome segregation during mitosis by its association with the cellular protein Brd4. It has been shown that E2 protein can regulate negative or positively the activity of several cellular promoters, although the precise mechanism of this regulation is uncertain. In this work we constructed a recombinant adenoviral vector to overexpress HPV16 E2 and evaluated the global pattern of biological processes regulated by E2 using microarrays expression analysis. Results The gene expression profile was strongly modified in cells expressing HPV16 E2, finding 1048 down-regulated genes, and 581 up-regulated. The main cellular pathway modified was WNT since we found 28 genes down-regulated and 15 up-regulated. Interestingly, this pathway is a convergence point for regulating the expression of genes involved in several cellular processes, including apoptosis, proliferation and cell differentiation; MYCN, JAG1 and MAPK13 genes were selected to validate by RT-qPCR the microarray data as these genes in an altered level of expression, modify very important cellular processes. Additionally, we found that a large number of genes from pathways such as PDGF, angiogenesis and cytokines and chemokines mediated inflammation, were also modified in their expression. Conclusions Our results demonstrate that HPV16 E2 has regulatory effects on cellular gene expression in HPV negative cells, independent of the other HPV proteins, and the gene profile observed indicates that these effects could be mediated by interactions with cellular proteins. The cellular processes affected suggest that E2 expression leads to the cells in to a convenient environment for a replicative cycle of the virus.
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Affiliation(s)
- Eric Ramírez-Salazar
- Department of Genetics and Molecular Biology, CINVESTAV-IPN, Mexico City, Mexico
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Antonov A, Gaidarov M, Ivanov M, Kadrev D, Aïche M, Barreau G, Czajkowski S, Jurado B, Belier G, Chatillon A, Granier T, Taieb J, Doré D, Letourneau A, Ridikas D, Dupont E, Berthoumieux E, Panebianco S, Farget F, Schmitt C, Audouin L, Khan E, Tassan-Got L, Aumann T, Beller P, Boretzky K, Dolinskii A, Egelhof P, Emling H, Franzke B, Geissel H, Kelic-Heil A, Kester O, Kurz N, Litvinov Y, Münzenberg G, Nolden F, Schmidt KH, Scheidenberger C, Simon H, Steck M, Weick H, Enders J, Pietralla N, Richter A, Schrieder G, Zilges A, Distler M, Merkel H, Müller U, Junghans A, Lenske H, Fujiwara M, Suda T, Kato S, Adachi T, Hamieh S, Harakeh M, Kalantar-Nayestanaki N, Wörtche H, Berg G, Koop I, Logatchov P, Otboev A, Parkhomchuk V, Shatilov D, Shatunov P, Shatunov Y, Shiyankov S, Shvartz D, Skrinsky A, Chulkov L, Danilin B, Korsheninnikov A, Kuzmin E, Ogloblin A, Volkov V, Grishkin Y, Lisin V, Mushkarenkov A, Nedorezov V, Polonski A, Rudnev N, Turinge A, Artukh A, Avdeichikov V, Ershov S, Fomichev A, Golovkov M, Gorshkov A, Grigorenko L, Klygin S, Krupko S, Meshkov I, Rodin A, Sereda Y, Seleznev I, Sidorchuk S, Syresin E, Stepantsov S, Ter-Akopian G, Teterev Y, Vorontsov A, Kamerdzhiev S, Litvinova E, Karataglidis S, Alvarez Rodriguez R, Borge M, Fernandez Ramirez C, Garrido E, Sarriguren P, Vignote J, Fraile Prieto L, Lopez Herraiz J, Moya de Guerra E, Udias-Moinelo J, Amaro Soriano J, Lallena Rojo A, Caballero J, Johansson H, Jonson B, Nilsson T, Nyman G, Zhukov M, Golubev P, Rudolph D, Hencken K, Jourdan J, Krusche B, Rauscher T, Kiselev D, Trautmann D, Al-Khalili J, Catford W, Johnson R, Stevenson P, Barton C, Jenkins D, Lemmon R, Chartier M, Cullen D, Bertulani C, Heinz A. The electron–ion scattering experiment ELISe at the International Facility for Antiproton and Ion Research (FAIR)—A conceptual design study. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2011. [DOI: 10.1016/j.nima.2010.12.246] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Altaf F, Osei NA, Garrido E, Al-Mukhtar M, Natali C, Sivaraman A, Noordeen HH, Nordeen HH. Repair of spondylolysis using compression with a modular link and screws. ACTA ACUST UNITED AC 2011; 93:73-7. [PMID: 21196547 DOI: 10.1302/0301-620x.93b1.24732] [Citation(s) in RCA: 17] [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: 11/05/2022]
Abstract
We describe the results of a prospective case series of patients with spondylolysis, evaluating a technique of direct stabilisation of the pars interarticularis with a construct that consists of a pair of pedicle screws connected by a U-shaped modular link passing beneath the spinous process. Tightening the link to the screws compresses bone graft in the defect in the pars, providing rigid intrasegmental fixation. We have carried out this procedure on 20 patients aged between nine and 21 years with a defect of the pars at L5, confirmed on CT. The mean age of the patients was 13.9 years (9 to 21). They had a grade I or less spondylolisthesis and no evidence of intervertebral degeneration on MRI. The mean follow-up was four years (2.3 to 7.3). The patients were assessed by the Oswestry Disability Index (ODI) and a visual analogue scale (VAS). At the latest follow-up, 18 patients had an excellent clinical outcome, with a significant (p < 0.001) improvement in their ODI and VAS scores. The mean ODI score at final follow-up was 8%. Assessment of the defect by CT showed a rate of union of 80%. There were no complications involving the internal fixation. The strength of the construct removes the need for post-operative immobilisation.
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Affiliation(s)
- F Altaf
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK.
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Moreira VF, Garrido E. [Patient's information. Vaccination against hepatitis A and B in chronic liver diseases]. Rev Esp Enferm Dig 2011; 103:42. [PMID: 21341939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- V F Moreira
- Servicio de Gastroenterología, Hospital Universitario Ramón y Cajal, Madrid, Spain
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Garrido E. [Looking at the mountain]. Rev Clin Esp 2010; 210:524-7. [PMID: 21064232 DOI: 10.1016/j.rce.2010.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- E Garrido
- Capio Hospital General de Cataluña Unidad Hipobárica-IDIBELL, Departamento de Ciencias Fisiológicas II, Universidad de Barcelona, España.
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Garrido E, Palomo T, Ponce G, García-Consuegra I, Jiménez-Arriero MA, Hoenicka J. The ANKK1 protein associated with addictions has nuclear and cytoplasmic localization and shows a differential response of Ala239Thr to apomorphine. Neurotox Res 2010; 20:32-9. [PMID: 20845092 DOI: 10.1007/s12640-010-9219-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 08/25/2010] [Accepted: 08/26/2010] [Indexed: 12/24/2022]
Abstract
The TaqIA single-nucleotide polymorphism (SNP), which is the most widely studied genetic polymorphism in addictions, is located at the gene that encodes the RIP kinase ANKK1 near the gene for dopamine receptor D2. The TaqIA SNP is in strong linkage disequilibrium with the SNP rs7118900, which changes the alanine at position 239 to threonine in the ANKK1 protein (Ala239/A2; Thr239/A1). In silico analysis has predicted that this polymorphic substitution creates an additional phosphorylation site in the kinase domain of ANKK1. To investigate the contribution of ANKK1 to the pathophysiology of TaqIA-associated phenotypes, we analyzed transfected HEK293T cells with the human ANKK1-kinase(Ala239) and ANKK1-kinase(Thr239) variants tagged with GFP. We observed that the ANKK1-kinase is located in both the nucleus and the cytoplasm, suggesting that there is nucleocytoplasmic shuttling of this putative signal transducer. In addition, we found that the Ala239Thr ANKK1-kinase polymorphism exhibited strong expression differences in both the nucleus and the cytoplasm at basal level and when stimulated with the dopamine agonist apomorphine. Specifically, the ANKK1-kinase(Thr239) variant showed the highest level of basal protein expression, while ANKK1-kinase(Ala239) was 0.64-fold lower. After treatment with apomorphine, ANKK1-kinase(Ala239) showed a 2.4-fold increment in protein levels, whereas a 0.67-fold reduction was observed in ANKK1-kinase(Thr239). Thus, here we provide the first evidence of functional ANKK1 differences that are marked by TaqIA and could be associated with vulnerability to addiction.
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Affiliation(s)
- E Garrido
- Laboratory of Neurosciences, Instituto de Investigación, Hospital Universitario 12 de Octubre, Avda. de Córdoba s/n, 28041 Madrid, Spain
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Teixeira LG, Spasiani JP, Meirelles AEWB, Garrido E, Nogueira AFS, Alessi AC, Marques JA, Canola JC. Rectal atresia in a newborn donkey. EQUINE VET EDUC 2010. [DOI: 10.1111/j.2042-3292.2010.00115.x] [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: 12/01/2022]
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Garrido E. Desfallecer en altitudes extremas. Rev Clin Esp 2010; 210:424-5. [DOI: 10.1016/j.rce.2010.05.002] [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] [Received: 05/13/2010] [Accepted: 05/24/2010] [Indexed: 10/19/2022]
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Orlandini S, Coccia E, Baccarelli I, Gianturco F, Garrido E, González-Lezana T, Delgado-Barrio G, Villarreal P. Binding He atoms to hydrogen moieties: quantum features from ultraweak interactions. Mol Phys 2010. [DOI: 10.1080/00268970903496660] [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: 10/20/2022]
Affiliation(s)
- S. Orlandini
- a CASPUR, Supercomputing Consortium , via dei Tizii 6, 00185 Rome, Italy
| | - E. Coccia
- b Department of Chemistry and CNISM , University of Rome La Sapienza , Piazzale A. Moro 5, 00185 Rome, Italy
| | - I. Baccarelli
- a CASPUR, Supercomputing Consortium , via dei Tizii 6, 00185 Rome, Italy
| | - F.A. Gianturco
- b Department of Chemistry and CNISM , University of Rome La Sapienza , Piazzale A. Moro 5, 00185 Rome, Italy
| | - E. Garrido
- c Instituto de Estructura de la Materia , Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain
| | - T. González-Lezana
- d Instituto de Física Fundamental , Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain
| | - G. Delgado-Barrio
- d Instituto de Física Fundamental , Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain
| | - P. Villarreal
- d Instituto de Física Fundamental , Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain
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Fedorov D, de Diego R, Garrido E, Jensen A. Four-body neutron-recoil recombination reaction as an alternative path for bridging the A= 5, 8 gap in neutron-rich nucleosynthesis scenarios. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100301014] [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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Bermejo F, López-Sanromán A, Algaba A, Van-Domselaar M, Gisbert JP, García-Garzón S, Garrido E, Piqueras B, De La Poza G, Guerra I. Mercaptopurine rescue after azathioprine-induced liver injury in inflammatory bowel disease. Aliment Pharmacol Ther 2010; 31:120-4. [PMID: 19709096 DOI: 10.1111/j.1365-2036.2009.04132.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Azathioprine (AZA) liver toxicity arises in approximately 3% of inflammatory bowel disease patients and may result in treatment discontinuation. AIM To describe the tolerance to mercaptopurine (MP) in patients with previous AZA-related liver injury. METHODS Retrospective description of 31 patients (14 Crohn's, 17 ulcerative colitis), in which AZA therapy was interrupted because of liver injury, with MP started as alternative therapy. RESULTS Mean AZA dose was 2.2 +/- 0.4 mg x kg/day. Median (interquartile range) of AZA exposure when liver injury was detected was 2 months (1-5.2). The type of AZA-related injury was cytolitic in 32%, cholestatic in 39% and mixed in 29%. After a median of 2.5 months (0.7-5.2), the therapy was switched to MP at a mean dose of 1.3 +/- 0.2 mg x kg/day. Median of follow-up of MP therapy was 32 months (8-54). In 87.1% of patients (95%CI: 70-96%), MP was tolerated without further liver injury; of these, 77.4% tolerated full MP doses and 9.7% tolerated lower doses. In a further cohort of 12.9% of patients, (95%CI: 3-29%), liver injury reappeared (two cholestasis, two mixed), 1-3 months after the onset of MP exposure. CONCLUSION The administration of MP is a good alternative in patients with AZA-related liver injury, before thiopurines are definitely discarded.
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Affiliation(s)
- F Bermejo
- Department of Gastroenterology, Hospital Universitario de Fuenlabrada, Madrid, Spain.
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de Diego R, Garrido E, Fedorov D, Jensen A. Few-Body Reactions in Nuclear Astrophysics: application to 6He and 9Be production. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100304017] [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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Vázquez-Sequeiros E, de Miquel DB, Olcina JRF, Martín JAG, García M, Lucas DJ, Garrido E, González C, Blanco AP, Arnau MR, Buenadicha A, Vicente VM, de Argila CM, Milicua JM. Training model for teaching endoscopic submucosal dissection of gastric tumors. Rev Esp Enferm Dig 2009; 101:546-52. [PMID: 19785494 DOI: 10.4321/s1130-01082009000800005] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
INTRODUCTION The elevated risk of complications and technical complexity of endoscopic submucosal dissection (ESD) has limited its implementation in our medical system. OBJECTIVE To design and evaluate a training program for learning the ESD technique. METHODS Four endoscopists with no experience with ESD underwent a 4-step training program: 1) review of the existing literature, didactic material, and theoretical aspects of ESD; 2) ESD training in an ex-vivo animal model; 3) ESD training in an in-vivo animal model (supervised by ESD expert); and 4) ESD performance in a patient. A standard gastroscope and an ESD knife (IT, Flex or Hook-knife Olympus) were employed. The classical ESD technique was performed: rising of the lesion, circumferential incision, and submucosal dissection. RESULTS Ex-vivo animal model: 6 x swine stomach/esophagus -cost < 100 euro; 6 x ESD: antrum (n = 2), body (n = 3) and fundus/cardia (n = 1)-; size of resected specimen: 4-10 cm; ESD duration: 105-240 minutes; therapeutic success: 100%; complications: perforation (1/6: 16%) sealed with clips. In-vivo animal model: 6 ESD (antrum/body of stomach: 4; esophagus: 2); size: 2-5 cm; duration: 40-165 minutes; success: 100%; complications: 0%. PATIENT ESD of a gastric lesion located in the antrum/body; size: 3 cm; duration 210 minutes; a complete resection was achieved; no complications. CONCLUSIONS The results of the present study support the usefulness of this model for learning ESD in our system.
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Affiliation(s)
- E Vázquez-Sequeiros
- Service of Gastroenterology, University Hospital Ramón y Cajal, Madrid, Spain.
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Chavez-Lopez MDG, Garcia-Villa E, Gariglio P, Garrido E, Hernandez-Gallegos E, Ponce V, Camacho J. Abstract B57: Regulation of Eag expression by p53 and Rb in tumoral cells. Cancer Res 2009. [DOI: 10.1158/0008-5472.fbcr09-b57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Ether à go-go (Eag) potassium channels display oncogenic properties. Their expression in healthy tissues is limited almost exclusively to the brain; however, it is highly expressed in several types of cancer. In addition, the inhibition of its activity or expression remarkably diminishes cellular proliferation and tumor progression. Our group found the expression of Eag in cells having alterations in p53 and Rb including C-33 and HeLa from cervical cancer. On the other hand, we have observed that Eag gene expression is regulated by factors that inhibit Rb or p53, such as, E6 and E7 oncogenes of the human papilloma virus and estradiol. Therefore, we have considered p53 and Rb like possible pathways for Eag regulation. To our knowledge, there are no reports on Eag regulation by tumor suppressor proteins. Thus in this work we evaluated the effect of p53 and Rb overexpression on the expression of Eag in C-33, HeLa (cervix) and A549 (lung cancer) cells. We also analyzed the expression of Eag in tumor samples from patients with retinoblastoma (a malignant tumor characterized by the loss of the gene Rb and alterations in the p53 pathway).
Methods: C-33, HeLa and A549 cells were obtained from American Type Culture Collection (ATCC) and the RNA's of patients with retinoblastoma from the Hospital of Pediatrics of the Medical Centre XXI century. In order to evaluate the expression of Eag, retrotranscription was performed and the analysis of gene expression was carried out by real time PCR, the results were analyzed by the method of ΔΔ-CT. In order to evaluate the effect of p53 and Rb overexpression on Eag, HeLa and C-33 cells were grown in DMEM and A549 cells on F12-K medium, supplemented with 10% of bovine fetal serum; later they were transfected with 1 µg of plasmid containing p53 and/or Rb. The RNA was obtained 72 hours later and then subjected to retrotranscription. Eag gene expression was then analyzed by real time PCR.
Results: We found that p53 and Rb transfection in C-33 cells does not affect the expression of Eag. However, Eag expression in HeLa cells was clearly down-regulated when transfected with p53 and/or Rb. Transfection of p53 in A549 cells diminished the expression of Eag, in contrast to Rb transfection which increased expression. Interestingly, we observed a very high expression of Eag in samples of retinoblastoma in comparison with the Eag expression in HeLa cells and in normal retina.
Conclusions: Our results suggest that tumor suppressor proteins p53 and Rb regulate the expression of Eag. In addition, our results also suggest Eag as a retinoblastoma potential therapeutic target for this type of tumors.
This project was partially supported by ICyT DF.
Citation Information: Cancer Res 2009;69(23 Suppl):B57.
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Affiliation(s)
| | | | | | | | | | - Veronica Ponce
- 2 Hospital de Pediatria del CMN Siglo XXI, Mexico City, D.F., Mexico
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Barletta P, Romero-Redondo C, Kievsky A, Viviani M, Garrido E. Integral relations for three-body continuum states with the adiabatic expansion. Phys Rev Lett 2009; 103:090402. [PMID: 19792768 DOI: 10.1103/physrevlett.103.090402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Indexed: 05/28/2023]
Abstract
The application of the hyperspherical adiabatic expansion to describe three-body scattering states suffers from the problem of very slow convergence. Contrary to what happens for bound states, a huge number of hyper-radial equations has to be solved, and even if done, the extraction of the scattering amplitude is problematic. In this Letter we show how to obtain accurate scattering phase shifts using the hyperspherical adiabatic expansion. To this aim two integral relations, derived from the Kohn variational principle, are used. The convergence of this procedure is as fast as for bound states.
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Affiliation(s)
- P Barletta
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
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López San Román A, Van Domselaar M, Garrido E. [Adalimumab in Crohn's disease - data from real life]. Rev Esp Enferm Dig 2008; 100:671-675. [PMID: 19159169 DOI: 10.4321/s1130-01082008001100001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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Centeno F, Ramírez-Salazar E, García-Villa E, Gariglio P, Garrido E. TAF1 interacts with and modulates human papillomavirus 16 E2-dependent transcriptional regulation. Intervirology 2008; 51:137-43. [PMID: 18580066 DOI: 10.1159/000141706] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Accepted: 05/14/2008] [Indexed: 11/19/2022] Open
Abstract
High-risk human papillomavirus (HPV) infection is the main etiological factor in the development of cervical cancer and viral type 16 is the most frequently found in this neoplasia. The E2 protein plays a key role in viral DNA replication, transcription and genome maintenance. E2 is a sequence-specific DNA-binding protein that activates or represses the transcriptional activity of promoters depending on the distance from the E2-binding sites to the TATA box. The transactivation properties of E2 are modulated by the interaction with several cellular factors that regulate the recruitment of transcription factor IID. Here, we demonstrate by pull-down assays the in vitro interaction of HPV16 E2 and TAF1. The domain of TAF1 necessary for the binding maps into its amino region, while the carboxy-terminal DNA-binding domain and the transactivation domain of the E2 protein are involved in the interaction. By transient cotransfection assays on C-33 A cells, we demonstrated that TAF1 enhances the activation of an E2-dependent artificial promoter while overexpression of TAF1 alleviates the E2-dependent repression of a high-risk HPV long control region. The specific modification of the transcriptional activity of both promoters by TAF1 suggests that the interaction between these proteins could participate in the modulation of the transregulatory properties of E2, with important biological consequences.
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Affiliation(s)
- Federico Centeno
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN, México, D.F., México
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Alvarez-Rodríguez R, Fynbo HOU, Jensen AS, Garrido E. Distinction between sequential and direct three-body decays. Phys Rev Lett 2008; 100:192501. [PMID: 18518444 DOI: 10.1103/physrevlett.100.192501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2008] [Indexed: 05/26/2023]
Abstract
We discuss the three-body decay mechanisms of many-body resonances. Sequential decays proceed via two-body configurations after emission of the third particle. In direct decay all three particles leave their interaction regions simultaneously. The intermediate paths within the interaction regions are not observables and are only accessible through models. The momentum distributions carry, apart from polarization, all possible information about decay modes and resonance structure. In this context we discuss detailed results for the decay of the (9)Be(5/2(-)) resonance.
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Affiliation(s)
- R Alvarez-Rodríguez
- Department of Physics and Astronomy, University of Aarhus, Aarhus C, Denmark
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Valencia-Hernández A, Cuevas-Bennett C, Garrido E. Transcriptional regulation of human papillomavirus type 18 P105 promoter by the co-activator CBP. Intervirology 2008; 50:418-25. [PMID: 18182775 DOI: 10.1159/000112917] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Accepted: 11/20/2007] [Indexed: 11/19/2022] Open
Abstract
UNLABELLED Human papillomaviruses (HPVs) are the etiological agents of cervical cancer, with HPV-16 and 18 being the representative types of the higher risk group. The expression of the viral genes with transforming activity (E6 and E7) is controlled by the upstream regulatory region (URR), a segment of the viral genome that contains elements recognized by several transcription factors. OBJECTIVE We have analyzed the participation of the cellular co-activator CBP on the transcriptional regulation of the HPV-18 URR. METHODS We generated mutants and 5' end deletion constructs derived from the HPV-18 URR and evaluated their transcriptional activity performing transient co-transfection assays on C-33A cells with a plasmid that over-expresses the co-activator CBP. We also performed quantitative chromatin immunoprecipitation assays to analyze the participation of the co-activator CBP on the HPV-18 P105 promoter. RESULTS Our results demonstrate that in C-33A cells CBP acts as a strong activator of the HPV-18 P105 promoter by a mechanism that depends on the integrity of the SP1-binding site, directly correlating with the acetylation of the histone H3 that is involved in nucleosomal stability. CONCLUSION We propose a mechanism of regulation of the HPV-18 P105 promoter by the cellular co-activator CBP, recruited by the transcription factor SP1.
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Affiliation(s)
- Armando Valencia-Hernández
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN, México, México
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