33 results on '"Carrión Rodríguez, Ángel Manuel"'
Search Results
2. Characterization of an eutherian gene cluster generated after transposon domestication identifies Bex3 as relevant for advanced neurological functions
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Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Junta de Andalucía, Centro de Investigación Biomédica en Red Enfermedades Raras (España), Navas, Enrique, Vicente-García, Cristina, Mirra, Serena, Burguera, Demian, Fernández-Castillo, Noèlia, Ferrán, José Luis, López-Mayorga, Macarena, Alaiz-Noya, Marta, Suárez-Pereira, Irene, Antón-Galindo, Ester, Ulloa, Fausto, Herrera-Úbeda, Carlos, Cuscó, Pol, Falcón-Moya, Rafael, Rodríguez-Moreno, Antonio, D’Aniello, Salvatore, Cormand, Bru, Marfany, Gemma, Soriano, Eduardo, Carrión Rodríguez, Ángel Manuel, Carvajal, Jaime J., Garcia-Fernàndez, Jordi, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Junta de Andalucía, Centro de Investigación Biomédica en Red Enfermedades Raras (España), Navas, Enrique, Vicente-García, Cristina, Mirra, Serena, Burguera, Demian, Fernández-Castillo, Noèlia, Ferrán, José Luis, López-Mayorga, Macarena, Alaiz-Noya, Marta, Suárez-Pereira, Irene, Antón-Galindo, Ester, Ulloa, Fausto, Herrera-Úbeda, Carlos, Cuscó, Pol, Falcón-Moya, Rafael, Rodríguez-Moreno, Antonio, D’Aniello, Salvatore, Cormand, Bru, Marfany, Gemma, Soriano, Eduardo, Carrión Rodríguez, Ángel Manuel, Carvajal, Jaime J., and Garcia-Fernàndez, Jordi
- Abstract
[Background]: One of the most unusual sources of phylogenetically restricted genes is the molecular domestication of transposable elements into a host genome as functional genes. Although these kinds of events are sometimes at the core of key macroevolutionary changes, their origin and organismal function are generally poorly understood., [Results]: Here, we identify several previously unreported transposable element domestication events in the human and mouse genomes. Among them, we find a remarkable molecular domestication that gave rise to a multigenic family in placental mammals, the Bex/Tceal gene cluster. These genes, which act as hub proteins within diverse signaling pathways, have been associated with neurological features of human patients carrying genomic microdeletions in chromosome X. The Bex/Tceal genes display neural-enriched patterns and are differentially expressed in human neurological disorders, such as autism and schizophrenia. Two different murine alleles of the cluster member Bex3 display morphological and physiopathological brain modifications, such as reduced interneuron number and hippocampal electrophysiological imbalance, alterations that translate into distinct behavioral phenotypes., [Conclusions]: We provide an in-depth understanding of the emergence of a gene cluster that originated by transposon domestication and gene duplication at the origin of placental mammals, an evolutionary process that transformed a non-functional transposon sequence into novel components of the eutherian genome. These genes were integrated into existing signaling pathways involved in the development, maintenance, and function of the CNS in eutherians. At least one of its members, Bex3, is relevant for higher brain functions in placental mammals and may be involved in human neurological disorders.
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- 2020
3. Regulation of longevity by sulfation activity
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Pérez-Jiménez, Mercedes M., Sansigre, P., Venegas-Calerón, Mónica, Sánchez-García, Alicia, Monje, José Manuel, Ríos Martín, José Julián, Carrión Rodríguez, Ángel Manuel, Artal-Sanz, Marta, and Muñoz, Manuel J.
- Abstract
Resumen del trabajo presentado al VI Spanish Worm Meeting, celebrado en Valencia del 9 al 10 de marzo de 2017., We have found that reduction of sulfation activity generates an increase of longevity by a mechanism that mimic gonad less animals. We will show data that in addition to affects aging also affects aging associate diseases.
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- 2017
4. Impact of transient down-regulation of DREAM in human embryonic stem cell pluripotency: The role of DREAM in the maintenance of hESCs
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Universidad de Sevilla. Departamento de Fisiología, Fontán Lozano, Ángela del Carmen, Capilla González, Vivian, Aguilera, Yolanda, Mellado, Nuria, Carrión Rodríguez, Ángel Manuel, Soria Escoms, Bernat, Hmadcha, Abdelkrim, Universidad de Sevilla. Departamento de Fisiología, Fontán Lozano, Ángela del Carmen, Capilla González, Vivian, Aguilera, Yolanda, Mellado, Nuria, Carrión Rodríguez, Ángel Manuel, Soria Escoms, Bernat, and Hmadcha, Abdelkrim
- Abstract
Little is knownabout the functions of downstreamregulatory element antagonist modulator (DREAM) inembryonic stem cells (ESCs). However, DREAM interacts with cAMP response element-binding protein (CREB) in a Ca2+-dependent manner, preventing CREB binding protein (CBP) recruitment. Furthermore, CREB and CBP are involved in maintaining ESC self-renewal and pluripotency. However, a previous knockout study revealed the protective function of DREAMdepletion in brain aging degeneration and that aging is accompanied by a progressive decline in stem cells (SCs) function. Interestingly, we found that DREAM is expressed in different cell types, including human ESCs (hESCs), human adipose-derived stromal cells (hASCs), human bone marrow-derived stromal cells (hBMSCs), and human newborn foreskin fibroblasts (hFFs), and that transitory inhibition of DREAMin hESCs reduces their pluripotency, increasing differentiation.We stipulate that these changes are partly mediated by increased CREB transcriptional activity. Overall, our data indicates that DREAMacts in the regulation of hESC pluripotency and could be a target to promote or prevent differentiation in embryonic cells.
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- 2016
5. Impact of transient down-regulation of DREAM in human embryonic stem cell pluripotency: The role of DREAM in the maintenance of hESCs
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European Commission, Junta de Andalucía, Fundación Progreso y Salud, Ministerio de Sanidad y Consumo (España), Ministerio de Educación y Ciencia (España), Instituto de Salud Carlos III, Fontán-Lozano, Ángela, Capilla-González, Vivian, Aguilera, Yolanda, Mellado, Nuria, Carrión Rodríguez, Ángel Manuel, Soria Escoms, Bernat, Hmadcha, Abdelkrim, European Commission, Junta de Andalucía, Fundación Progreso y Salud, Ministerio de Sanidad y Consumo (España), Ministerio de Educación y Ciencia (España), Instituto de Salud Carlos III, Fontán-Lozano, Ángela, Capilla-González, Vivian, Aguilera, Yolanda, Mellado, Nuria, Carrión Rodríguez, Ángel Manuel, Soria Escoms, Bernat, and Hmadcha, Abdelkrim
- Abstract
Little is known about the functions of downstream regulatory element antagonist modulator (DREAM) in embryonic stem cells (ESCs). However, DREAM interacts with cAMP response element-binding protein (CREB) in a Ca-dependent manner, preventing CREB binding protein (CBP) recruitment. Furthermore, CREB and CBP are involved in maintaining ESC self-renewal and pluripotency. However, a previous knockout study revealed the protective function of DREAM depletion in brain aging degeneration and that aging is accompanied by a progressive decline in stem cells (SCs) function. Interestingly, we found that DREAM is expressed in different cell types, including human ESCs (hESCs), human adipose-derived stromal cells (hASCs), human bone marrow-derived stromal cells (hBMSCs), and human newborn foreskin fibroblasts (hFFs), and that transitory inhibition of DREAM in hESCs reduces their pluripotency, increasing differentiation. We stipulate that these changes are partly mediated by increased CREB transcriptional activity. Overall, our data indicates that DREAM acts in the regulation of hESC pluripotency and could be a target to promote or prevent differentiation in embryonic cells.
- Published
- 2016
6. Stress-induced depressive behaviors require a functional NLRP3 inflammasome
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Junta de Andalucía, Dirección General de Investigación Científica y Técnica, DGICT (España), Fundación Ramón Areces, Alcocer-Gómez, Elísabet, Marín-Aguilar, Fabiola, Bullón, Pedro, Sánchez-Alcázar, José Antonio, Carrión Rodríguez, Ángel Manuel, Cordero, Mario D., Junta de Andalucía, Dirección General de Investigación Científica y Técnica, DGICT (España), Fundación Ramón Areces, Alcocer-Gómez, Elísabet, Marín-Aguilar, Fabiola, Bullón, Pedro, Sánchez-Alcázar, José Antonio, Carrión Rodríguez, Ángel Manuel, and Cordero, Mario D.
- Abstract
Depression is a major public health concern in modern society, yet little is known about the molecular link between this condition and neuroinflammation. The inflammasome complex was recently shown to be implicated in depression. The present study shows the implication of NLRP3 inflammasome in animal model of stress-induced depression. Accordingly, we show here that in the absence of a NLRP3 inflammasome, prolonged stress does not provoke depressive behaviors or microglial activation in mice or dampen hippocampal neurogenesis. Indeed, NLRP3 deletion or inhibition of microglial activation impairs the stress-induced alterations associated with depression. According to these findings in animal model, the inflammasome could be a target for new therapeutic interventions to prevent depression in patients.
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- 2016
7. Mutation in cytochrome b gene of mitochondrial DNA in a family with fibromyalgia is associated with NLRP3-inflammasome activation
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Fundación Ramón Areces, Junta de Andalucía, Dirección General de Investigación Científica y Técnica, DGICT (España), Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Cordero, Mario D., Alcocer-Gómez, Elísabet, Marín-Aguilar, Fabiola, Cotán, David, Pérez-Pulido, Antonio J., Battino, Maurizio, Sánchez-Alcázar, José Antonio, Carrión Rodríguez, Ángel Manuel, Bullón, Pedro, Fundación Ramón Areces, Junta de Andalucía, Dirección General de Investigación Científica y Técnica, DGICT (España), Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Cordero, Mario D., Alcocer-Gómez, Elísabet, Marín-Aguilar, Fabiola, Cotán, David, Pérez-Pulido, Antonio J., Battino, Maurizio, Sánchez-Alcázar, José Antonio, Carrión Rodríguez, Ángel Manuel, and Bullón, Pedro
- Abstract
[Background]: Fibromyalgia (FM) is a worldwide diffuse musculoskeletal chronic pain condition that affects up to 5% of the general population. Many symptoms associated with mitochondrial diseases are reported in patients with FM such as exercise intolerance, fatigue, myopathy and mitochondrial dysfunction. In this study, we report a mutation in cytochrome b gene of mitochondrial DNA (mtDNA) in a family with FM with inflammasome complex activation. [Methods]: mtDNA from blood cells of five patients with FM were sequenced. We clinically and genetically characterised a patient with FM and family with a new mutation in mtCYB. Mitochondrial mutation phenotypes were determined in skin fibroblasts and transmitochondrial cybrids. [Results]: After mtDNA sequence in patients with FM, we found a mitochondrial homoplasmic mutation m.15804T > C in the mtCYB gene in a patient and family, which was maternally transmitted. Mutation was observed in several tissues and skin fibroblasts showed a very significant mitochondrial dysfunction and oxidative stress. Increased NLRP3-inflammasome complex activation was observed in blood cells from patient and family. [Conclusions]: We propose further studies on mtDNA sequence analysis in patients with FM with evidences for maternal inheritance. The presence of similar symptoms in mitochondrial myopathies could unmask mitochondrial diseases among patients with FM. On the other hand, the inflammasome complex activation by mitochondrial dysfunction could be implicated in the pathophysiology of mitochondrial diseases.
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- 2016
8. Adult newborn neurons are involved in learning acquisition and long-term memory formation: The distinct demands on temporal neurogenesis of different cognitive tasks
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Suárez-Pereira, Irene, Canals Gamoneda, Santiago, Carrión Rodríguez, Ángel Manuel, Dirección General de Investigación Científica y Técnica, DGICT (España), Fundación Ramón Areces, Universidad Pablo de Olavide, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), and Ministerio de Educación y Ciencia (España)
- Abstract
There is evidence that adult hippocampal neurogenesis influences hippocampal function, although the role these neurons fulfill in learning and consolidation processes remains unclear. Using a novel fast X-ray ablation protocol to deplete neurogenic cells, we demonstrate that immature adult hippocampal neurons are required for hippocampal learning and long-term memory formation. Moreover, we found that long-term memory formation in the object recognition and passive avoidance tests, two paradigms that involve circuits with distinct emotional components, had different temporal demands on hippocampal neurogenesis. These results reveal new and unexpected aspects of neurogenesis in cognitive processes., Grant sponsor: DGICYT; Grant numbers: BFU2008-01552; BFU2011-27207; CSD2007-00023; BFU2012-39958; Grant sponsor: FundacionRamon Areces; Grant sponsor: University Pablo de Olavide fellowship.
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- 2014
9. Modelo de roedor para fibromialgia y dolor crónico
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Universidad de Sevilla. Departamento de Fisiología, Cordero Morales, Mario David, Miguel Rodríguez, Manuel de, Carrión Rodríguez, Ángel Manuel, Sánchez Alcazar, José Antonio, Fontán Lozano, Ángela del Carmen, Universidad de Sevilla. Departamento de Fisiología, Cordero Morales, Mario David, Miguel Rodríguez, Manuel de, Carrión Rodríguez, Ángel Manuel, Sánchez Alcazar, José Antonio, and Fontán Lozano, Ángela del Carmen
- Abstract
El objeto de la presente invención se refiere a un modelo de roedor para fibromialgia y dolor crónico, inducido por tratamientos farmacológicos y nutricionales, así como la evaluación de la respuesta mediante pruebas de imagen cerebral. Se ha demostrado que mediante la inhibición parcial de los niveles de Coenzima Q en roedores, se reproducen los síntomas más comunes de la fibromialgia como son dolor, depresión, ansiedad, trastorno de la memoria y del sueño así como todas las alteraciones biológicas descritas en la enfermedad como inflamación, estrés oxidativo, déficit de serotonina. Por otro lado, así mismo se demuestra la sobreexpresión de un gen marcador del dolor, lo que nos aporta una herramienta molecular para la evaluación y control del dolor.
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- 2015
10. Metformin and caloric restriction induce an AMPK-dependent restoration of mitochondrial dysfunction in fibroblasts from Fibromyalgia patients
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Junta de Andalucía, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Alcocer-Gómez, Elísabet, Garrido-Maraver, Juan, Bullón, Pedro, Cotán, David, Carrión Rodríguez, Ángel Manuel, Sánchez-Alcázar, José Antonio, Battino, Maurizio, Cordero, Mario D., Junta de Andalucía, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Alcocer-Gómez, Elísabet, Garrido-Maraver, Juan, Bullón, Pedro, Cotán, David, Carrión Rodríguez, Ángel Manuel, Sánchez-Alcázar, José Antonio, Battino, Maurizio, and Cordero, Mario D.
- Abstract
Impaired AMPK is associated with a wide spectrum of clinical and pathological conditions, ranging from obesity, altered responses to exercise or metabolic syndrome, to inflammation, disturbed mitochondrial biogenesis and defective response to energy stress. Fibromyalgia (FM) is a world-wide diffused musculoskeletal chronic pain condition that affects up to 5% of the general population and comprises all the above mentioned pathophysiological states. Here, we tested the involvement of AMPK activation in fibroblasts derived from FM patients. AMPK was not phosphorylated in fibroblasts from FM patients and was associated with decreased mitochondrial biogenesis, reduced oxygen consumption, decreased antioxidant enzymes expression levels and mitochondrial dysfunction. However, mtDNA sequencing analysis did not show any important alterations which could justify the mitochondrial defects. AMPK activation in FM fibroblast was impaired in response to moderate oxidative stress. In contrast, AMPK activation by metformin or incubation with serum from caloric restricted mice improved the response to moderate oxidative stress and mitochondrial metabolism in FM fibroblasts. These results suggest that AMPK plays an essential role in FM pathophysiology and could represent the basis for a valuable new therapeutic target/strategy. Furthermore, both metformin and caloric restriction could be an interesting therapeutic approach in FM.
- Published
- 2015
11. Oxidative stress, mitochondrial dysfunction and, inflammation common events in skin of patients with Fibromyalgia
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Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Sánchez-Domínguez, Benito, Bullón, Pedro, Alcocer-Gómez, Elísabet, Carrión Rodríguez, Ángel Manuel, Sánchez-Alcázar, José Antonio, Cordero, Mario D., Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Sánchez-Domínguez, Benito, Bullón, Pedro, Alcocer-Gómez, Elísabet, Carrión Rodríguez, Ángel Manuel, Sánchez-Alcázar, José Antonio, and Cordero, Mario D.
- Abstract
Fibromyalgia is a chronic pain syndrome with unknown etiology. Recent studies have shown some evidence demonstrating that oxidative stress, mitochondrial dysfunction and inflammation may have a role in the pathophysiology of fibromyalgia. Despite several skin-related symptoms accompanied by small fiber neuropathy have been studied in FM, these mitochondrial changes have not been yet studied in this tissue. Skin biopsies from patients showed a significant mitochondrial dysfunction with reduced mitochondrial chain activities and bioenergetics levels and increased levels of oxidative stress. These data were related to increased levels of inflammation and correlated with pain, the principal symptom of FM. All these parameters have shown a role in peripheral nerve damage which has been observed in FM as a possible responsible to allodynia. Our findings may support the role of oxidative stress, mitochondrial dysfunction and inflammation as interdependent events in the pathophysiology of FM with a special role in the peripheral alterations.
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- 2015
12. Mitochondrial dysfunction and ROS induce inflammation in Fibromyalgia patients
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Cordero, Mario D., Alcocer-Gómez, Elísabet, Díaz, Eduardo, Carrión Rodríguez, Ángel Manuel, Alfonsi, Simona, Sánchez-Alcázar, José Antonio, and Miguel, Manuel de
- Abstract
Resumen del póster presentado al 22nd IUBMB & 37th FEBS Congress, celebrado en Sevilla (España) del 4 al 9 de septiembre de 2012., [Objective]: Mitochondrial dysfunction has been implicated in the pathophysiology of Fibromyalgia (FM). Inflammation has been also hypothesized in FM. We will study the possible relationship relationship between mitochondrial dysfunction, oxidative stress and inflammation in FM. [Methods]: Mitochondrial dysfunction was studied assaying Coenzyme Q10 (CoQ10), mitochondrial ROS production and mtDNA contents in blood mononuclear cells (BMCs). Serum TNF-alphaand gene expressionwas assayed as inflammatory mediator in patients. Clinical symptoms were evaluated using Visual Analogical Scale of pain (VAS), and Fibromyalgia Impact Questionnaire (FIQ). CoQ10 deficiency was induced in healthy cells and mice to evaluate TNF-alpha release. [Results]: BMCs from FM patients showed reduced level of CoQ10, mtDNA, and high level of mitochondrial ROS and TNFalpha serum and transcript levels. A significant negative correlation between CoQ10 and TNF-alpha levels (r = )0.588; p < 0.01), and a positive correlation between ROS and TNFalpha levels (r = 0.791; p < 0.001) were observed accompanied by significant correlation of VAS with TNF-alpha serum and transcript levels (r = 0.4507; p < 0.05 and r = 0.7089; p < 0.001, respectively). TNF-alpha release was observed in an in vitro and in vivo CoQ10 deficiency model. Conclusions: Our data evidence that mitochondrial dysfunction has an important role in FM. Inflammation is a mitochondrial dysfunction-depended event implicated in the pathophysiology of FM.
- Published
- 2012
13. Adult newborn neurons are involved in learning acquisition and long-term memory formation: The distinct demands on temporal neurogenesis of different cognitive tasks
- Author
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Dirección General de Investigación Científica y Técnica, DGICT (España), Fundación Ramón Areces, Universidad Pablo de Olavide, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Ministerio de Educación y Ciencia (España), Suárez-Pereira, Irene, Canals, Santiago, Carrión Rodríguez, Ángel Manuel, Dirección General de Investigación Científica y Técnica, DGICT (España), Fundación Ramón Areces, Universidad Pablo de Olavide, Ministerio de Ciencia e Innovación (España), Ministerio de Economía y Competitividad (España), Ministerio de Educación y Ciencia (España), Suárez-Pereira, Irene, Canals, Santiago, and Carrión Rodríguez, Ángel Manuel
- Abstract
There is evidence that adult hippocampal neurogenesis influences hippocampal function, although the role these neurons fulfill in learning and consolidation processes remains unclear. Using a novel fast X-ray ablation protocol to deplete neurogenic cells, we demonstrate that immature adult hippocampal neurons are required for hippocampal learning and long-term memory formation. Moreover, we found that long-term memory formation in the object recognition and passive avoidance tests, two paradigms that involve circuits with distinct emotional components, had different temporal demands on hippocampal neurogenesis. These results reveal new and unexpected aspects of neurogenesis in cognitive processes.
- Published
- 2014
14. NLRP3 inflammasome is activated in fibromyalgia: The effect of coenzyme Q10
- Author
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Instituto de Salud Carlos III, European Commission, Junta de Andalucía, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Asociación para el Fomento de la Investigación en Cáncer y Mitocondriopatías (España), Cordero, Mario D., Alcocer-Gómez, Elísabet, Carrión Rodríguez, Ángel Manuel, Miguel, Manuel de, Díaz, Eduardo, Bullón, Pedro, Battino, Maurizio, Sánchez-Alcázar, José Antonio, Instituto de Salud Carlos III, European Commission, Junta de Andalucía, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Asociación para el Fomento de la Investigación en Cáncer y Mitocondriopatías (España), Cordero, Mario D., Alcocer-Gómez, Elísabet, Carrión Rodríguez, Ángel Manuel, Miguel, Manuel de, Díaz, Eduardo, Bullón, Pedro, Battino, Maurizio, and Sánchez-Alcázar, José Antonio
- Abstract
[Aims]: Fibromyalgia (FM) is a prevalent chronic pain syndrome characterized by generalized hyperalgesia associated with a wide spectrum of symptoms such as fatigue and joint stiffness. Diagnosis of FM is difficult due to the lack of reliable diagnostic biomarkers, while treatment is largely inadequate. We have investigated the role of coenzyme Q10 (CoQ10) deficiency and mitochondrial dysfunction in inflammasome activation in blood cells from FM patients, and in vitro and in vivo CoQ10 deficiency models. [Results]: Mitochondrial dysfunction was accompanied by increased protein expression of interleukin (IL)-1ß, NLRP3 (NOD-like receptor family, pyrin domain containing 3) and caspase-1 activation, and an increase of serum levels of proinflammatory cytokines (IL-1ß and IL-18). CoQ10 deficiency induced by p-aminobenzoate treatment in blood mononuclear cells and mice showed NLRP3 inflammasome activation with marked algesia. A placebo-controlled trial of CoQ10 in FM patients has shown a reduced NLRP3 inflammasome activation and IL-1ß and IL-18 serum levels. [Innovation]: These results show an important role for the NLRP3 inflammasome in the pathogenesis of FM, and the capacity of CoQ10 in the control of inflammasome. Conclusion: These findings provide new insights into the pathogenesis of FM and suggest that NLRP3 inflammasome inhibition represents a new therapeutic intervention for the disease.
- Published
- 2014
15. Is inflammation a mitochondrial dysfunction-dependent event in fibromyalgia?
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Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Junta de Andalucía, Instituto de Salud Carlos III, European Commission, Cordero, Mario D., Díaz, Eduardo, Carrión Rodríguez, Ángel Manuel, Alfonsi, Simona, Sánchez-Alcázar, José Antonio, Bullón, Pedro, Battino, Maurizio, Miguel, Manuel de, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Junta de Andalucía, Instituto de Salud Carlos III, European Commission, Cordero, Mario D., Díaz, Eduardo, Carrión Rodríguez, Ángel Manuel, Alfonsi, Simona, Sánchez-Alcázar, José Antonio, Bullón, Pedro, Battino, Maurizio, and Miguel, Manuel de
- Abstract
Fibromyalgia (FM) is a complex disorder that affects up to 5% of the general population worldwide. Both mitochondrial dysfunction and inflammation have been implicated in the pathophysiology of FM. We have investigated the possible relationship between mitochondrial dysfunction, oxidative stress, and inflammation in FM. We studied 30 women diagnosed with FM and 20 healthy women. Blood mononuclear cells (BMCs) from FM patients showed reduced level of coenzyme Q10 (CoQ10) and mtDNA contents and high level of mitochondrial reactive oxygen species (ROS) and serum tumor necrosis factor (TNF)-alpha and transcript levels. A significant negative correlation between CoQ10 and TNF-alpha levels (r=-0.588; p<0.01), and a positive correlation between ROS and TNF-alpha levels (r=0.791; p<0.001) were observed accompanied by a significant correlation of visual analogical scale with serum TNF-alpha and transcript levels (r=0.4507; p<0.05 and r=0.7089; p<0.001, respectively). TNF-alpha release was observed in an in vitro (BMCs) and in vivo (mice) CoQ10 deficiency model. Oral CoQ10 supplementation restored biochemical parameters and induced a significant improvement in clinical symptoms (p<0.001). These results lead to the hypothesis that inflammation could be a mitochondrial dysfunction-dependent event implicated in the pathophysiology of FM in several patients indicating at mitochondria as a possible new therapeutic target.
- Published
- 2013
16. Can coenzyme Q10 improve clinical and molecular parameters in fibromyalgia?
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Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Instituto de Salud Carlos III, Ministerio de Sanidad, Servicios Sociales e Igualdad (España), European Commission, Cordero, Mario D., Alcocer-Gómez, Elísabet, Miguel, Manuel de, Carrión Rodríguez, Ángel Manuel, Bullón, Pedro, Battino, Maurizio, Fernández-Rodríguez, Ana, Sánchez-Alcázar, José Antonio, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Instituto de Salud Carlos III, Ministerio de Sanidad, Servicios Sociales e Igualdad (España), European Commission, Cordero, Mario D., Alcocer-Gómez, Elísabet, Miguel, Manuel de, Carrión Rodríguez, Ángel Manuel, Bullón, Pedro, Battino, Maurizio, Fernández-Rodríguez, Ana, and Sánchez-Alcázar, José Antonio
- Abstract
Fibromyalgia (FM) is a complex disorder that affects up to 5% of the general population worldwide. Its pathophysiological mechanisms are difficult to identify and current drug therapies demonstrate limited effectiveness. Both mitochondrial dysfunction and coenzyme Q10 (CoQ10) deficiency have been implicated in FM pathophysiology. We have investigated the effect of CoQ10 supplementation. We carried out a randomized, double-blind, placebo-controlled trial to evaluate clinical and gene expression effects of forty days of CoQ10 supplementation (300 mg/day) on 20 FM patients. This study was registered with controlled-trials.com (ISRCTN 21164124). An important clinical improvement was evident after CoQ10 versus placebo treatment showing a reduction of FIQ (p<0.001), and a most prominent reduction in pain (p<0.001), fatigue, and morning tiredness (p<0.01) subscales from FIQ. Furthermore, we observed an important reduction in the pain visual scale (p<0.01) and a reduction in tender points (p<0.01), including recovery of inflammation, antioxidant enzymes, mitochondrial biogenesis, and AMPK gene expression levels, associated with phosphorylation of the AMPK activity. These results lead to the hypothesis that CoQ10 have a potential therapeutic effect in FM, and indicate new potential molecular targets for the therapy of this disease. AMPK could be implicated in the pathophysiology of FM.
- Published
- 2013
17. New downstream regulatory element antagonist modulator gene and polypeptide that is a transcriptional repressor, for identifying antitumor agents
- Author
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Naranjo, José Ramón, Mellström, Britt, Dompablo García, Isidro, Alexander Link, Wolfang, Carrión Rodríguez, Ángel Manuel, and Ledo Gómez, Francisco
- Abstract
Fecha de solicitud:01.07.2002.- Titular: Consejo Superior de Investigaciones Científicas (CSIC)., [EN]The DREAM (downstream regulatory element (DRE) antagonist modulator) gene (I) and polypeptide (II), in both native and mutated forms; their use as specific transcriptional silencers of DRE sequences; the use of (II) as a target for identifying new therapeutic compounds and the use as a regulator of CRE-dependent gene expression are new. Independent claims are also included for the following: (1) recombinant vectors containing (I); (2) host cells transformed with the vector of (a); (3) identifying therapeutic agents (A) able to block or activate (II); (4) use of embryonic cells of (2) for creating transgenic animals that have disorders associated with alterations in expression or activity of DREAM; (5) a nucleic acid (III) comprising or containing a 2886 base pair (bp) sequence, representing the complementary sequence to DREAM mRNA; (6) a recombinant vector containing (III); (7) host cells transfected with the vector of (6), with suppressed DREAM expression; and (8) mono- or poly-clonal antibodies (Ab) that recognize (II). [ES]Nuevas estrategias de regulación génica mediante la proteína Dream. La represión de Dream de la expresión génica dependiente de DRE (c-jun y c-fos) es bloqueada por la proteína aCrem. Nuevas formas mutadas de Dream (LVmutDream) escapan del bloqueo de aCrem y permiten definir nuevas estrategias de control terapéutico de procesos patológicos de tipo oncológico, desordenes del aprendizaje, etc. Además, las formas mutadas en las regiones de EF-hands de Dream (EFmutDream) bloquean la actividad de las proteínas Creb y Crem, implicadas en la activación final de multitud de genes dependiente de Cre, y pueden ser utilizadas en la regulación de la expresión de estos genes.
- Published
- 2002
18. Polipéptido DREAM, nueva proteína reguladora de la expresión génica
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Naranjo, José Ramón, Mellström, Britt, Dompablo García, Isidro, Link, Wolfgang A., Carrión Rodríguez, Ángel Manuel, and Ledo Gómez, Francisco
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DRE Antagonist Modulator ,Polipéptido DREAM ,Expresión génica - Abstract
Referencia OEPM: P9802667.-- Fecha de solicitud: 22/12/1998.-- Titular: Consejo Superior de Investigaciones Científicas (CSIC)., Polipéptido DREAM, nueva proteína reguladora de la expresión génica. Esta invención hace referencia a un factor de transcripción represor de la expresión de genes por su unión a las secuencias DRE, denominado DREAM (DRE Antagonist Modulator). DREAM es una nueva proteína humana que inhibe la expresión de genes regulados por secuencias DRE, entre ellos el gen prodinorfina, c-jun, c-fos e ICER. Esto abre nuevas perspectivas de control de la proliferación, diferenciación y/o muerte celular en procesos tumorales, degenerativos y autoinmunes.
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- 2001
19. Oral coenzyme Q10 supplementation improves clinical symptoms and recovers pathologic alterations in blood mononuclear cells in a fibromyalgia patient
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Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Centro de Investigación Biomédica en Red Enfermedades Raras (España), Instituto de Salud Carlos III, Junta de Andalucía, Cordero, Mario D., Cotán, David, Pozo-Martín, Yaiza del, Carrión Rodríguez, Ángel Manuel, Miguel, Manuel de, Bullón, Pedro, Sánchez-Alcázar, José Antonio, Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Centro de Investigación Biomédica en Red Enfermedades Raras (España), Instituto de Salud Carlos III, Junta de Andalucía, Cordero, Mario D., Cotán, David, Pozo-Martín, Yaiza del, Carrión Rodríguez, Ángel Manuel, Miguel, Manuel de, Bullón, Pedro, and Sánchez-Alcázar, José Antonio
- Abstract
Fibromyalgia (FM) is a chronic pain syndrome with unknown etiology. Recent studies have shown evidence demonstrating that mitochondrial dysfunction and oxidative stress may have a role in the pathophysiology of FM. Coenzyme Q10 (CoQ10) is an essential electron carrier in the mitochondrial respiratory chain and a strong antioxidant. Low CoQ10 levels have been detected in patients with FM, and a significant decrease of clinical symptoms has been reported after oral CoQ10 supplementation. In this report, we show the effect of CoQ10 treatment on clinical symptoms, blood mononuclear cells, and mitochondrial and oxidative stress markers from a woman with FM. After CoQ10 treatment, the patient reported a significant improvement of clinical symptoms. At the cellular level, CoQ10 treatment restored mitochondrial dysfunction and the mtDNA copy number, decreased oxidative stress, and increased mitochondrial biogenesis. Our results suggest that CoQ10 could be an alternative therapeutic approach for FM. © 2012.
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- 2012
20. The polypetide dream, used as Ca<2+>ions-dependent transcriptional regulator and its gene coding therefor
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Naranjo, José Ramón, Mellström, Britt, Dompablo García, Isidro, Link, Wolfgang A., Carrión Rodríguez, Ángel Manuel, and Ledo Gómez, Francisco
- Abstract
Fecha de solicitud:22.12.1999.- Tirular: Consejo Superior de Investigaciones Científicas (CSIC), [EN]The DREAM suppression of the genic expression depending on DRE (c-jun and c-fos between two forms of DREAM (EFmutDREAM and LVmutDREAM) escape from the blocking by Ca2+ and by others) is regulated by Ca2+ and by the protein alpha CREM. Mutant forms alpha CREM respectively enable to define new strategies for the therapeutic control of pathologic process of oncologic type, troubles of apprenticeship, etc. On the other hand, DREAM is a target protein for the identification of new therapeutic compounds. Furthermore, the mutant forms in the regions of EF-hands of DREAM (EFmutDREAM) block the activities of CRE-dependent proteins and can be used in the regulation of the expression of these genes. CREB and CREM are involved in the final activation of a multiplicity of genes. [ES]La supresión DREAM de la expresión génica en función de DRE (c-jun y c-fos entre dos formas de DREAM (EFmutDREAM y LVmutDREAM) escapar del bloqueo por Ca2 + y por otros) es regulado por el Ca2 + y por la proteína alfa CREM. Formas mutantes alfa CREM, respectivamente permiten definir nuevas estrategias para el control terapéutico del proceso patológico de tipo oncológico, los problemas de aprendizaje, etc Por otra parte, DREAM es una proteína diana para la identificación de nuevos compuestos terapéuticos. Además, las formas mutantes en las regiones de la FE-manos de DREAM (EFmutDREAM) bloquean la actividad de las proteínas CRE-dependiente y puede ser utilizado en la regulación de la expresión de estos genes. CREB y CREM están involucrados en la activación final de una multiplicidad de genes.
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- 2000
21. El polipeptido dream, regulador transcripcional dependiente de iones Ca<2+> y su gen codificante
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Naranjo, José Ramón, Mellström, Britt, Dompablo García, Isidro, Link, Wolfgang A., Carrión Rodríguez, Ángel Manuel, and Ledo Gómez, Francisco
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humanities ,psychological phenomena and processes - Abstract
Fecha de solicitud:22.12.1999.- Tirular: Consejo Superior de Investigaciones Científicas (CSIC) [EN]The DREAM suppression of the genic expression depending on DRE (c-jun and c-fos between two forms of DREAM (EFmutDREAM and LVmutDREAM) escape from the blocking by Ca2+ and by others) is regulated by Ca2+ and by the protein alpha CREM. Mutant forms alpha CREM respectively enable to define new strategies for the therapeutic control of pathologic process of oncologic type, troubles of apprenticeship, etc. On the other hand, DREAM is a target protein for the identification of new therapeutic compounds. Furthermore, the mutant forms in the regions of EF-hands of DREAM (EFmutDREAM) block the activities of CRE-dependent proteins and can be used in the regulation of the expression of these genes. CREB and CREM are involved in the final activation of a multiplicity of genes. [ES]La supresión DREAM de la expresión génica en función de DRE (c-jun y c-fos entre dos formas de DREAM (EFmutDREAM y LVmutDREAM) escapar del bloqueo por Ca2 + y por otros) es regulado por el Ca2 + y por la proteína alfa CREM. Formas mutantes alfa CREM, respectivamente permiten definir nuevas estrategias para el control terapéutico del proceso patológico de tipo oncológico, los problemas de aprendizaje, etc Por otra parte, DREAM es una proteína diana para la identificación de nuevos compuestos terapéuticos. Además, las formas mutantes en las regiones de la FE-manos de DREAM (EFmutDREAM) bloquean la actividad de las proteínas CRE-dependiente y puede ser utilizado en la regulación de la expresión de estos genes. CREB y CREM están involucrados en la activación final de una multiplicidad de genes.
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- 2000
22. The a-current modulates learning via NMDA receptors containing the NR2B subunit
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Dirección General de Investigación Científica y Técnica, DGICT (España), Junta de Andalucía, Ministerio de Ciencia e Innovación (España), Fundación Ramón Areces, Universidad Pablo de Olavide, Fontán-Lozano, Ángela, Suárez-Pereira, Irene, González-Forero, David, Carrión Rodríguez, Ángel Manuel, Dirección General de Investigación Científica y Técnica, DGICT (España), Junta de Andalucía, Ministerio de Ciencia e Innovación (España), Fundación Ramón Areces, Universidad Pablo de Olavide, Fontán-Lozano, Ángela, Suárez-Pereira, Irene, González-Forero, David, and Carrión Rodríguez, Ángel Manuel
- Abstract
Synaptic plasticity involves short- and long-term events, although the molecular mechanisms that underlie these processes are not fully understood. The transient A-type K+ current (IA) controls the excitability of the dendrites from CA1 pyramidal neurons by regulating the back-propagation of action potentials and shaping synaptic input. Here, we have studied how decreases in IA affect cognitive processes and synaptic plasticity. Using wild-type mice treated with 4-AP, an IA inhibitor, and mice lacking the DREAM protein, a transcriptional repressor and modulator of the IA, we demonstrate that impairment of IA decreases the stimulation threshold for learning and the induction of early-LTP. Hippocampal electrical recordings in both models revealed alterations in basal electrical oscillatory properties toward low-theta frequencies. In addition, we demonstrated that the facilitated learning induced by decreased IA requires the activation of NMDA receptors containing the NR2B subunit. Together, these findings point to a balance between the IA and the activity of NR2B-containing NMDA receptors in the regulation of learning. © 2011 Fontán-Lozano et al.
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- 2011
23. Postnatal Proteasome Inhibition Induces Neurodegeneration and Cognitive Deficiencies in Adult Mice: A New Model of Neurodevelopment Syndrome
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Junta de Andalucía, Fundación Ramón Areces, Dirección General de Investigación Científica y Técnica, DGICT (España), Ministerio de Ciencia e Innovación (España), Romero-Granados, Rocío, Fontán-Lozano, Ángela, Aguilar-Montilla, Francisco Javier, Carrión Rodríguez, Ángel Manuel, Junta de Andalucía, Fundación Ramón Areces, Dirección General de Investigación Científica y Técnica, DGICT (España), Ministerio de Ciencia e Innovación (España), Romero-Granados, Rocío, Fontán-Lozano, Ángela, Aguilar-Montilla, Francisco Javier, and Carrión Rodríguez, Ángel Manuel
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Defects in the ubiquitin-proteasome system have been related to aging and the development of neurodegenerative disease, although the effects of deficient proteasome activity during early postnatal development are poorly understood. Accordingly, we have assessed how proteasome dysfunction during early postnatal development, induced by administering proteasome inhibitors daily during the first 10 days of life, affects the behaviour of adult mice. We found that this regime of exposure to the proteasome inhibitors MG132 or lactacystin did not produce significant behavioural or morphological changes in the first 15 days of life. However, towards the end of the treatment with proteasome inhibitors, there was a loss of mitochondrial markers and activity, and an increase in DNA oxidation. On reaching adulthood, the memory of mice that were injected with proteasome inhibitors postnatally was impaired in hippocampal and amygdala-dependent tasks, and they suffered motor dysfunction and imbalance. These behavioural deficiencies were correlated with neuronal loss in the hippocampus, amygdala and brainstem, and with diminished adult neurogenesis. Accordingly, impairing proteasome activity at early postnatal ages appears to cause morphological and behavioural alterations in adult mice that resemble those associated with certain neurodegenerative diseases and/or syndromes of mental retardation.
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- 2011
24. Clinical Symptoms in Fibromyalgia Are Better Associated to Lipid Peroxidation Levels in Blood Mononuclear Cells Rather than in Plasma
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Ministerio de Sanidad, Servicios Sociales e Igualdad (España), Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Cordero, Mario D., Alcocer-Gómez, Elísabet, Cano-García, Francisco J., Miguel, Manuel de, Carrión Rodríguez, Ángel Manuel, Navas, Plácido, Sánchez-Alcázar, José Antonio, Ministerio de Sanidad, Servicios Sociales e Igualdad (España), Federación Andaluza de Fibromialgia, Síndrome de Fatiga Crónica y Sensibilidad Química Múltiple, Cordero, Mario D., Alcocer-Gómez, Elísabet, Cano-García, Francisco J., Miguel, Manuel de, Carrión Rodríguez, Ángel Manuel, Navas, Plácido, and Sánchez-Alcázar, José Antonio
- Abstract
[Background] We examined lipid peroxidation (LPO) in blood mononuclear cells (BMCs) and plasma, as a marker of oxidative damage, and its association to clinical symptoms in Fibromyalgia (FM) patients. [Methods]: We conducted a case–control and correlational study comparing 65 patients and 45 healthy controls. Clinical parameters were evaluated using the Fibromyalgia Impact Questionnaire (FIQ), visual analogues scales (VAS), and the Beck Depression Inventory (BDI). Oxidative stress was determined by measuring LPO in BMCs and plasma. [Results]: We found increased LPO levels in BMCs and plasma from FM patients as compared to normal control (P<0.001). A significant correlation between LPO in BMCs and clinical parameters was observed (r = 0.584, P<0.001 for VAS; r = 0.823, P<0.001 for FIQ total score; and r = 0.875, P<0.01 for depression in the BDI). We also found a positive correlation between LPO in plasma and clinical symptoms (r = 0.452, P<0.001 for VAS; r = 0.578, P<0.001 for FIQ total score; and r = 0.579, P<0.001 for depression in the BDI). Partial correlation analysis controlling for age and BMI, and sex, showed that both LPO in cells and plasma were independently associated to clinical symptoms. However, LPO in cells, but not LPO in plasma, was independently associated to clinical symptoms when controlling for depression (BDI scores). [Discussion]: The results of this study suggest a role for oxidative stress in the pathophysiology of fibromyalgia and that LPO in BMCs rather than LPO in plasma is better associated to clinical symptoms in FM.
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- 2011
25. Muscle Physiology Changes Induced by Every Other Day Feeding and Endurance Exercise in Mice: Effects on Physical Performance
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Ministerio de Ciencia e Innovación (España), Rodríguez-Bies, Elisabet, Santa-Cruz Calvo, Sara, Fontán-Lozano, Ángela, Peña Amaro, José, Berral de la Rosa, Francisco J., Carrión Rodríguez, Ángel Manuel, Navas, Plácido, López-Lluch, Guillermo, Ministerio de Ciencia e Innovación (España), Rodríguez-Bies, Elisabet, Santa-Cruz Calvo, Sara, Fontán-Lozano, Ángela, Peña Amaro, José, Berral de la Rosa, Francisco J., Carrión Rodríguez, Ángel Manuel, Navas, Plácido, and López-Lluch, Guillermo
- Abstract
Every other day feeding (EOD) and exercise induce changes in cell metabolism. The aim of the present work was to know if both EOD and exercise produce similar effects on physical capacity, studying their physiological, biochemical and metabolic effects on muscle. Male OF-1 mice were fed either ad libitum (AL) or under EOD. After 18 weeks under EOD, animals were also trained by using a treadmill for another 6 weeks and then analyzed for physical activity. Both, EOD and endurance exercise increased the resistance of animals to extenuating activity and improved motor coordination. Among the groups that showed the highest performance, AL and EOD trained animals, ALT and EODT respectively, only the EODT group was able to increase glucose and triglycerides levels in plasma after extenuating exercise. No high effects on mitochondrial respiratory chain activities or protein levels neither on coenzyme Q levels were found in gastrocnemius muscle. However, exercise and EOD did increase b-oxidation activity in this muscle accompanied by increased CD36 levels in animals fed under EOD and by changes in shape and localization of mitochondria in muscle fibers. Furthermore, EOD and training decreased muscle damage after strenuous exercise. EOD also reduced the levels of lipid peroxidation in muscle. Our results indicate that EOD improves muscle performance and resistance by increasing lipid catabolism in muscle mitochondria at the same time that prevents lipid peroxidation and muscle damage.
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- 2010
26. Molecular Bases of Caloric Restriction Regulation of Neuronal Synaptic Plasticity
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Fontán-Lozano, Ángela, López-Lluch, Guillermo, Delgado-García, José María, Navas, Plácido, Carrión Rodríguez, Ángel Manuel, Fontán-Lozano, Ángela, López-Lluch, Guillermo, Delgado-García, José María, Navas, Plácido, and Carrión Rodríguez, Ángel Manuel
- Abstract
Aging is associated with the decline of cognitive properties. This situation is magnified when neurodegenerative processes associated with aging appear in human patients. Neuronal synaptic plasticity events underlie cognitive properties in the central nervous system. Caloric restriction (CR; either a decrease in food intake or an intermittent fasting diet) can extend life span and increase disease resistance. Recent studies have shown that CR can have profound effects on brain function and vulnerability to injury and disease. Moreover, CR can stimulate the production of new neurons from stem cells (neurogenesis) and can enhance synaptic plasticity, which modulate pain sensation, enhance cognitive function, and may increase the ability of the brain to resist aging. The beneficial effects of CR appear to be the result of a cellular stress response stimulating the production of proteins that enhance neuronal plasticity and resistance to oxidative and metabolic insults; they include neurotrophic factors, neurotransmitter receptors, protein chaperones, and mitochondrial biosynthesis regulators. In this review, we will present and discuss the effect of CR in synaptic processes underlying analgesia and cognitive improvement in healthy, sick, and aging animals. We will also discuss the possible role of mitochondrial biogenesis induced by CR in regulation of neuronal synaptic plasticity.
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- 2008
27. Caloric restriction increases learning consolidation and facilitates synaptic plasticity through mechanisms dependent on NR2B subunits of the NMDA receptor
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Junta de Andalucía, Dirección General de Investigación Científica y Técnica, DGICT (España), Fontán-Lozano, Ángela, Sáez-Cassanelli, José Luis, Inda, M. Carmen, Santos-Arteaga, Mercedes de los, Sierra-Domínguez, Sergio Antonio, López-Lluch, Guillermo, Delgado-García, José María, Carrión Rodríguez, Ángel Manuel, Junta de Andalucía, Dirección General de Investigación Científica y Técnica, DGICT (España), Fontán-Lozano, Ángela, Sáez-Cassanelli, José Luis, Inda, M. Carmen, Santos-Arteaga, Mercedes de los, Sierra-Domínguez, Sergio Antonio, López-Lluch, Guillermo, Delgado-García, José María, and Carrión Rodríguez, Ángel Manuel
- Abstract
One of the main focal points of aging research is the search for treatments that will prevent or ameliorate the learning and memory deficiencies associated with aging. Here we have examined the effects of maintaining mature mice on a long-term intermittent fasting diet (L-IFD). We found that L-IFD enhances learning and consolidation processes. We also assessed the long-term changes in synaptic efficiency in these animals. L-IFD mice showed an increase in low-theta-band oscillations, paired-pulse facilitation, and facilitation of long-term synaptic plasticity in the hippocampus with respect to mice fed ad libitum. In addition, we found an increase in the expression of the NMDA receptor subunit NR2B in some brain areas of L-IFD mice. Specific antagonism of this subunit in the hippocampus reversed the beneficial effects of L-IFD. These data provide a molecular and cellular mechanism by which L-IFD may enhance cognition, ameliorating some aging-associated cognitive deficits.
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- 2007
28. Acquisition, consolidation, reconsolidation, and extinction of eyelid conditioning responses require de novo protein synthesis
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Inda, M. Carmen, Delgado-García, José María, Carrión Rodríguez, Ángel Manuel, Inda, M. Carmen, Delgado-García, José María, and Carrión Rodríguez, Ángel Manuel
- Abstract
Memory, as measured by changes in an animal's behavior some time after learning, is a reflection of many processes. Here, using a trace paradigm, in mice we show that de novo protein synthesis is required for acquisition, consolidation, reconsolidation, and extinction of classically conditioned eyelid responses. Two critical periods of protein synthesis have been found: the first, during training, the blocking of which impaired acquisition; and the second, lasting the first 4 h after training, the blocking of which impaired consolidation. The process of reconsolidation was sensitive to protein synthesis inhibition if anisomycin was injected before or just after the reactivation session. Furthermore, extinction was also dependent on protein synthesis, following the same temporal course as that followed during acquisition and consolidation. This last fact reinforces the idea that extinction is an active learning process rather than a passive event of forgetting. Together, these findings demonstrate that all of the different stages of memory formation involved in the classical conditioning of eyelid responses are dependent on protein synthesis.
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- 2005
29. Impact of transient down-regulation of DREAM in human embryonic stem cell pluripotency The role of DREAM in the maintenance of hESCs
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Fontán Lozano, Ángela del Carmen, Capilla González, Vivian, Aguilera, Yolanda, Mellado, Nuria, Carrión Rodríguez, Ángel Manuel, Soria Escoms, Bernat, Hmadcha, Abdelkrim, [Fontán-Lozano,A, Capilla-Gonzalez,V, Aguilera,Y, Mellado,N, Soria,B, Hmadcha,A] Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Sevilla, Spain. [Carrión,AM] División de Neurociencias, Universidad Pablo de Olavide de Sevilla, Sevilla, Spain. [Soria,B, Hmadcha,A] CIBER de Diabetes y Enfermedades Metabólica asociada (CIBERDEM), Madrid, Spain, This work was supported by a nonprofit foundation ‘Fundación Progreso y Salud’ of the Andalusian Regional Ministry of Health, Consejería de Innovación Ciencia y Empresa, Junta de Andalucía and Fondo Europeo de Desarrollo Regional (FEDER) (CTS-6505, INP-2011-1615-900000 and P10-CVI-6095), Instituto de Salud Carlos III and Fondo Europeo de Desarrollo Regional (FEDER) (RD12/0019/0028, PI10/00964 and PI14/01015), the Ministry of Health and Consumer Affairs (Advanced Therapies Program Grant TRA-120), Universidad de Sevilla. Departamento de Fisiología, European Commission, Junta de Andalucía, Fundación Progreso y Salud, Ministerio de Sanidad y Consumo (España), Ministerio de Educación y Ciencia (España), and Instituto de Salud Carlos III
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Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Differentiation [Medical Subject Headings] ,Pluripotency ,Stage-Specific Embryonic Antigens ,Chemicals and Drugs::Amino Acids, Peptides, and Proteins::Proteins::DNA-Binding Proteins::Basic-Leucine Zipper Transcription Factors::Cyclic AMP Response Element-Binding Protein [Medical Subject Headings] ,KChIP-3 ,Células madre embrionarias ,Down-Regulation ,Anatomy::Cells::Stem Cells::Embryonic Stem Cells::Human Embryonic Stem Cells [Medical Subject Headings] ,Real-Time Polymerase Chain Reaction ,Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings] ,Humans ,Calsenilin ,Anatomy::Cells::Connective Tissue Cells::Stromal Cells::Mesenchymal Stromal Cells [Medical Subject Headings] ,RNA, Small Interfering ,Diferenciación celular ,Cyclic AMP Response Element-Binding Protein ,Cells, Cultured ,Chemicals and Drugs::Enzymes and Coenzymes::Enzymes::Transferases::Acyltransferases::Acetyltransferases::p300-CBP Transcription Factors::CREB-Binding Protein [Medical Subject Headings] ,Anatomy::Cells::Connective Tissue Cells::Fibroblasts [Medical Subject Headings] ,CREB ,Chemicals and Drugs::Amino Acids, Peptides, and Proteins::Proteins::Carrier Proteins::Calcium-Binding Proteins::Intracellular Calcium-Sensing Proteins::Neuronal Calcium-Sensor Proteins::Kv Channel-Interacting Proteins [Medical Subject Headings] ,DREAM ,Cell Differentiation ,Kv Channel-Interacting Proteins ,Fibroblasts ,CREB-Binding Protein ,humanities ,Adipose Tissue ,Differentiation ,Antigens, Surface ,embryonic structures ,Proteoglycans ,RNA Interference ,Human embryonic stem cells ,Stromal Cells ,psychological phenomena and processes - Abstract
Little is known about the functions of downstream regulatory element antagonist modulator (DREAM) in embryonic stem cells (ESCs). However, DREAM interacts with cAMP response element-binding protein (CREB) in a Ca-dependent manner, preventing CREB binding protein (CBP) recruitment. Furthermore, CREB and CBP are involved in maintaining ESC self-renewal and pluripotency. However, a previous knockout study revealed the protective function of DREAM depletion in brain aging degeneration and that aging is accompanied by a progressive decline in stem cells (SCs) function. Interestingly, we found that DREAM is expressed in different cell types, including human ESCs (hESCs), human adipose-derived stromal cells (hASCs), human bone marrow-derived stromal cells (hBMSCs), and human newborn foreskin fibroblasts (hFFs), and that transitory inhibition of DREAM in hESCs reduces their pluripotency, increasing differentiation. We stipulate that these changes are partly mediated by increased CREB transcriptional activity. Overall, our data indicates that DREAM acts in the regulation of hESC pluripotency and could be a target to promote or prevent differentiation in embryonic cells., This work was supported by a nonprofit foundation ‘Fundación Progreso y Salud’ of the Andalusian Regional Ministry of Health; Consejería de Innovación Ciencia y Empresa, Junta de Andalucía and Fondo Europeo de Desarrollo Regional (FEDER) (CTS-6505; INP-2011-1615-900000 and P10-CVI-6095); Instituto de Salud Carlos III and Fondo Europeo de Desarrollo Regional (FEDER) (RD12/0019/0028; PI10/00964 and PI14/01015); the Ministry of Health and Consumer Affairs (Advanced Therapies Program Grant TRA-120). AFL was the recipient of a ‘Juan de la Cierva’ contract, a postdoctoral contract from the Spanish Ministry of Education and Science (MEC). Support from FSED and FAID allowed access to databanks. CIBERDEM is an initiative of the Instituto de Salud Carlos III.
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30. DNA metabolism's role in neuronal activity-dependent processes
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Bachiller Sánchez Arévalo, Sara, Carrión Rodríguez, Ángel Manuel, and Ruiz Laza, Rocío
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Metabolismo ,Sistema nervioso ,DNA - Abstract
Programa de Doctorado en Neurociencias, Recently some studies demonstrate that adult neuronal genome is a genetic mosaic but the role of this mosaicism and how is generated are not well known. The two main mechanisms that could result in the neuronal mosaic genome are somatic recombination and the LINE-1 (L1) retrotransposition. Some evidences, alterations in central nervous system development found in knock-out (KO) mice for proteins related with DNA repair processes and L1 activation in neuronal precursors, suggest that neuronal genome mosaicism may be related with the generation of neuronal diversity during central nervous system development. However, if genome reorganization processes happen in the adult nervous system during neuronal plasticity events are not established. Recently, it has been reported that neuronal activity transiently provokes increase of neuronal DNA breaks in cerebral areas where long-term neuronal plasticity events takes place, in some case related with cognition. DNA breaks have been related with the initial steps of gene expression activation, but also can be compatible with genomic reorganization. The main objective of this PhD project was determinate the potential role of processes that may result in genomic reorganization during neuronal activation. Firstly, we studied the importance of adult L1 retrotransposition in neuronal activation processes. Our results showed an activity-dependent increase in genome de novo L1 insertions in the hippocampus. Also using systemic pharmacologic and intrahippocampal genetic approaches, we demonstrate that L1 activation in the adult hippocampus is required for long-term memory formation. Secondly, we looked for evidences of potential genome reorganization events induced by exploration of an enriched environment, a protocol that provokes neuronal activity-dependent events. Exploratory session provoked an increase in the number of neurons containing DNA breaks, measured as the number of cells with 53BP1 foci, and in gene expression of genes related with DNA metabolism and DNA breaks. Both events happen in a sequential temporal-dependent manner in hippocampus and prefrontal cortex. Thirdly, to clear up the possible physiological role of DNA metabolism proteins in cognition, we made transient knock down of tyrosil-DNA phosphodiesterases 1 and 2, and h2ax, by intrahippocampal administration with specific antisense oligonucleotides (ASOs), and passive avoidance, an hippocampal-dependent cognition test. Hippocampal knock down of these three proteins provoked impairment in long-term memory formation in passive avoidance test. Finally, using the H2AX-/- mice we studied the role of H2AX in central nervous system function. H2AX-/- mice showed morphological alterations in the amygdala and hippocampus compared with the wt mice. Also, at behavioral level H2AX-/- mice presented deficits in depressive, cognition and social behaviors. In conclusion, all these data together suggest activity-dependent neural DNA reorganizations in the adult hippocampus. In addition, genetic and pharmacological manipulations of DNA reorganizations events in adult brain seem to affect cognition processes such as memory formation. Finally, depletion of H2AX in the germinal line provokes alteration in central nervous system function., Universidad Pablo de Olavide. Departamento de Fisiología, Anatomía y Biología Celular, Postprint
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- 2017
31. Implicación de las células gliales de microglía y astroglía en los procesos de aprendizaje y memoria de reconocimiento de objetos
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Aguilar Montilla, Francisco Javier and Carrión Rodríguez, Ángel Manuel
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Aprendizaje ,Fisiología del aprendizaje ,Memoria - Abstract
Programa de Doctorado en Neurociencias, Cambios de eficiencia sináptica y síntesis de nuevas moléculas en las neuronas constituyen la base para explicar la conversión de una memoria lábil en una memoria duradera durante un proceso conocido como consolidación. Esta memoria duradera puede recuperar su estado lábil si es reactivada y posteriormente recobrar su persistencia en un proceso denominado reconsolidación. De esta manera, una memoria previamente consolidada puede ser reforzada o incluso actualizada con nueva información, según sea reactivada en ausencia o en presencia de novedad respectivamente. Tradicionalmente, los estudios sobre aprendizaje y memoria han sido diseñados para desentrañar el papel neuronal en estos procesos. Sin embargo, investigaciones recientes han demostrado la participación de células gliales en funciones hasta hace poco desconocidas. Por ello, nuestro objetivo en este trabajo es estudiar la posible implicación de las células gliales, especialmente microglía y astroglía, en los procesos de adquisición, consolidación y reconsolidación de la memoria. Las células microgliales son muy activas, capaces de responder a cambios en el espacio extracelular. Usando sistémicamente minociclina, un inhibidor de la activación microglial, demostramos que la microglía no es necesaria para la adquisición de nueva información ni para el refuerzo de memorias ya almacenadas de reconocimiento de objetos (RO). Sin embargo, la consolidación de nueva información adquirida, así como la actualización de memorias de RO previamente almacenadas, requieren de la activación microglial. Estos resultados correlacionan con un aumento en el tamaño celular de la población microglial, marcada con EGR-1 en el hipocampo, tras sesiones de entrenamiento y reactivación con novedad de RO. Tales cambios de área no suceden cuando administramos minociclina justo después de las sesiones mencionadas anteriormente. Además, demostramos que la activación de la microglía es requerida para la adecuada expresión de c-Fos en el hipocampo, un trazador de cambio de actividad neuronal, tras el entrenamiento y la reactivación con novedad de RO. Todo ello, sugiere que la microglía, a través de la regulación de la actividad neuronal, participa en el almacenamiento duradero de nueva información como nueva memoria o recuerdo actualizado. Por último, la administración junto con minociclina de D-serina, un transmisor ligado a la actividad de los astrocitos que actúa como coagonista del receptor NMDA, revierte las alteraciones cognitivas y las modificaciones en la activación neuronal provocadas por la inhibición de la activación microglial. Es interesante remarcar que la D-serina no recupera el incremento de tamaño que se produce en las células microgliales EGR-1+ en los procesos de incorporación de nueva información. Estos datos apuntan a que la acción que ejerce la D-serina exógena, simula un paso posterior a la activación de la microglía durante la formación y actualización de la memoria. Nuestros resultados sugieren que la microglía, la astroglía y las neuronas cooperan en el almacenamiento de nueva información de RO. En ese sentido, la activación microglial precedería a la liberación de D-serina por los astrocitos, que regularía el cambio de actividad neuronal en el hipocampo a través de los receptores NMDA. Estos resultados relacionan a la glía (microglía y astrocitos) con los procesos cognitivos que dependen del hipocampo., Universidad Pablo de Olavide. Departamento de Fisiología, Anatomía y Biología Celular, Postprint
- Published
- 2017
32. Activación del complejo NLRP3-Inflamasoma como posible factor etiopatogénico de la depresión mayor
- Author
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Alcocer Gómez, Elisa Isabel, Sánchez-Alcázar, José A., and Carrión Rodríguez, Ángel Manuel
- Subjects
Depresión (enfermedad) ,NLRP3-Inflamasoma - Abstract
Programa de Doctorado en Psicología Clínica y de la Salud, El trastorno depresivo mayor (TDM) es la enfermedad mental más prevalente y un importante problema de salud en la sociedad actual. Aunque su epidemiología, síntomas y complicaciones han sido ampliamente documentados, su etiología y fisiopatología permanecen aún sin dilucidar. En las dos últimas décadas, se ha recopilado una amplia evidencia que apoya el papel de la inflamación como posible factor etiológico de la depresión mayor. Además, se ha mostrado repetidamente que los niveles de citoquinas pro-inflamatorias están elevados en personas diagnosticadas de TDM, entre ellas, las citoquinas IL-1ß e IL-18. Sin embargo, los mecanismos por los cuales se producen estos procesos inflamatorios aún no están claros. En los últimos años, las IL-1ß e IL-18 han adquirido mucha relevancia por su implicación en diversas patologías y su relación con algunas caspasas implicadas en la inflamación y la apoptosis, como es el caso de la caspasa-1. Precisamente las IL-1ß e IL-18, son las principales citoquinas activadas por un nuevo sistema inflamatorio conocido como complejo NLRP3-Inflamasoma, un complejo protéico considerado como un sensor de estrés intracelular, cuya activación es responsable de la inflamación sistémica. En este sentido, en el presente estudio hemos investigado la posible implicación del complejo NLRP3-Inflamasoma (inflamasoma) en la fisiopatología del TDM, examinado un aspecto novedoso en relación a los procesos de inmuno-inflamación en la respuesta de estrés y la depresión, y es el hecho de que el complejo NLRP3-Inflamasoma pueda constituir un puente entre el estrés psicológico y la depresión. Además, hemos analizado la posibilidad de que la modulación de este complejo pueda convertirse en un objetivo clave en el tratamiento de este trastorno, así como en un biomarcador para evaluar la respuesta al tratamiento antidepresivo en pacientes con TDM. Para ello, hemos trabajado en primer lugar con una muestra de pacientes con TDM tratados y no tratados con el antidepresivo amitriptilina. Los resultados han mostrado que el complejo NLRP3-Inflamasoma se encuentra activado en pacientes con TDM, puesto de manifiesto por niveles elevados de la expresión de proteína y ARNm de NLRP3 y Caspasa-1 en células mononuclares de la sangre de los pacientes y por niveles séricos elevados de IL-1ß e IL-18. Además, hemos encontrado que los niveles de estas citoquinas correlacionan positivamente con los síntomas depresivos, medidos mediante el Inventario de Depresión de Beck (BDI). Los niveles de estrés oxidativo también se han encontrado elevados en estos pacientes. El tratamiento con amitriptilina redujo la activación del inflamasoma en los pacientes, pero no los niveles de estrés oxidativo, llevándonos a pensar que tenía que existir una vía alternativa para la activación de este complejo en el TDM que quizás podría ser el estrés psicológico. En este sentido, en una segunda parte de nuestro estudio, hemos trabajado con un modelo animal (ratón) de depresión inducida por estrés, y los resultados han mostrado que NLRP3-Inflamasoma está implicado en la depresión producida como consecuencia del estrés crónico. Nuestro trabajo ha mostrado que en ausencia de NLRP3 inflamasoma, el estrés prolongado no provoca comportamientos depresivos, ni activación microglial, ni disminución de la neurogénesis del hipocampo. En una tercera parte de nuestro estudio, hemos evaluado el efecto que ciertos fármacos antidepresivos, utilizados normalmente en la práctica clínica, tienen en la modulación de la activación del inflamasoma, tanto en un modelo invitro de células THP-1 estimuladas por ATP, como en un modelo de ratón de depresión inducida por estrés, como en una muestra de pacientes con TDM. Los resultados han mostrado que los antidepresivos producían una reducción de la activación del inflamasoma manifestada a través de una disminución de la expresión protéica y de ARNm de NLRP3 y de IL-1ß (p17), y de una disminución de los niveles séricos de IL-1ß y IL-18. Además, se ha observado una interesante correlación negativa entre los niveles de IL-1ß y los niveles de serotonina en los pacientes tratados. Estos resultados proporcionan una nueva comprensión de la patogénesis del TDM y señalan al inflamasoma como un posible objetivo para nuevas intervenciones terapéuticas para esta enfermedad., Universidad Pablo de Olavide. Departamento de Fisiología, Anatomía y Biología Celular
- Published
- 2015
33. Papel de la neurogénesis hipocampal adulta en los procesos cognitivos que dependen del hipocampo
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Suárez Pereira, Irene and Carrión Rodríguez, Ángel Manuel
- Subjects
Apendizaje ,Hipocampo ,Neurología del desarrollo - Abstract
Programa de Doctorado en Neurociencias, En las últimas dos décadas se ha estudiado intensamente el proceso de neurogénesis, con especial interés la neurogénesis adulta. Aunque se ha descubierto cómo se desarrollan y maduran las nuevas neuronas adultas del hipocampo desde el punto de vista morfológico y electrofisiológico, el papel de la neurogénesis hipocampal adulta (NHA) es controvertido debido a que los protocolos que provocan una disminución prolongada de la NHA si bien afectan a los procesos de aprendizaje y memoria, también ocasionan importantes efectos colaterales. El objetivo de este trabajo es determinar el papel de la NHA en las distintas fases de los procesos de aprendizaje y memoria que dependen del hipocampo. Para ello, hemos diseñado un nuevo protocolo de irradiación con rayos X en el animal despierto e inmovilizado que elimina más del 90% de los precursores neuronales en un periodo comprendido entre 6 y 72h después de la irradiación, sin afectar al funcionamiento de las neuronas adultas ni generar respuesta neuroinflamatoria. Además, este protocolo permite la realización de experimentos de conducta tan solo 4 horas después de la irradiación. Aplicando este protocolo de ablación a distintos momentos con respecto a una sesión de entrenamiento para la formación de memoria de reconocimiento de objetos y de evitación pasiva, hemos descubierto que la NHA se requiere para adquisición y la formación de memoria duradera de nueva información. En base a registros multicanal del hipocampo en el animal anestesiado, se comprobó que la eliminación de la NHA impide la potenciación sináptica duradera de los circuitos hipocampales inducida por estimulación de alta frecuencia de la vía perforante, el correlato celular de los procesos de aprendizaje y memoria. Por otro lado, hemos determinado el papel de la NHA sobre la modificación de memorias de reconocimiento de objetos ya almacenadas. En este sentido, hemos descubierto que la NHA es requerida para la actualización de memorias ya almacenadas y no para reforzar dichas memorias. Por último, el inmunomarcaje de genes tempranos, trazadores de cambio de actividad, junto con marcadores de neuronas inmaduras en hipocampos de animales sacrificados 1,5h después de sesiones de entrenamiento y reactivación con distintas combinaciones de objetos, muestran un reclutamiento diferencial de las neuronas maduras e inmaduras cuando los ratones adultos fueron expuestos a ambientes familiares que contienen parámetros novedosos. Todos estos datos indican que la NHA solo se requiere cuando se adquiere información novedosa, bien en forma de nuevo aprendizaje o bien modificando una información ya almacenada. Por todo ello, estos resultados revelan nuevas e interesantes implicaciones de la NHA en los procesos cognitivos que dependen del hipocampo, lo cual podría ser útil en el estudio de soluciones terapéuticas para enfermedades con trastornos cognitivos., Universidad Pablo de Olavide. Departamento de Fisiología, Anatomía y Biología Celular
- Published
- 2015
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