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Tabone M, García-Merino JA, Bressa C, Rocha Guzman NE, Herrera Rocha K, Chu Van E, Castelli FA, Fenaille F, Larrosa M. Chronic Consumption of Cocoa Rich in Procyanidins Has a Marginal Impact on Gut Microbiota and on Serum and Fecal Metabolomes in Male Endurance Athletes. J Agric Food Chem 2022; 70:1878-1889. [PMID: 35112856 DOI: 10.1021/acs.jafc.1c07547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Cocoa is used in the sports world as a supplement, although there is no consensus on its use. We investigated the effect of cocoa intake on intestinal ischemia (intestinal fatty acid-binding protein (I-FABP)), serum lipopolysaccharide (LPS) levels, gastrointestinal symptoms, and gut microbiota in endurance athletes during their training period on an unrestricted diet. We also performed a metabolomics analysis of serum and feces after a bout of exercise before and after supplementation. Cocoa consumption had no effect on I-FABP, LPS, or gastrointestinal symptoms. Cocoa intake significantly increased the abundance of Blautia and Lachnospira genera and decreased the abundance of the Agathobacter genus, which was accompanied by elevated levels of polyphenol fecal metabolites 4-hydroxy-5-(phenyl)-valeric acid and O-methyl-epicatechin-O-glucuronide. Our untargeted approach revealed that cocoa had no significant effects on serum and fecal metabolites and that its consumption had little impact on the metabolome after a bout of physical exercise.
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Affiliation(s)
- Mariangela Tabone
- MAS Microbiota Group, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 28670, Spain
| | - Jose Angel García-Merino
- MAS Microbiota Group, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 28670, Spain
| | - Carlo Bressa
- MAS Microbiota Group, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 28670, Spain
- Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid 28223, Spain
| | - Nuria Elizabeth Rocha Guzman
- Grupo de Investigación en Alimentos Funcionales y Nutracéuticos, Unidad de Posgrado, Investigación y Desarrollo Tecnológico, TecNM/Instituto Tecnológico de Durango, Durango 34080, México
| | - Karen Herrera Rocha
- Grupo de Investigación en Alimentos Funcionales y Nutracéuticos, Unidad de Posgrado, Investigación y Desarrollo Tecnológico, TecNM/Instituto Tecnológico de Durango, Durango 34080, México
| | - Emeline Chu Van
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), MetaboHUB, F-91191 Gif sur Yvette, France
| | - Florence A Castelli
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), MetaboHUB, F-91191 Gif sur Yvette, France
| | - François Fenaille
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), MetaboHUB, F-91191 Gif sur Yvette, France
| | - Mar Larrosa
- MAS Microbiota Group, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid 28670, Spain
- Department of Nutrition and Food Science, School of Pharmacy, Complutense University of Madrid (UCM), Madrid 28040, Spain
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Fernández O, Aladro Y, Arroyo R, Brieva L, Calles-Hernández MC, Carrascal P, Comabella M, Costa-Frossard L, Eichau S, García-Merino JA, Ginestal R, González I, Izquierdo G, Martínez-Ginés ML, Meca-Lallana JE, Mendibe-Bilbao MM, Oterino A, Prieto JM, Río J, Ramió-Torrentà L, Romero-Pinel L, Téllez N, Rodríguez-Antigüedad A. [12th Post-ECTRIMS Meeting: review of the novelties from the 2019 ECTRIMS Congress (I)]. Rev Neurol 2021; 70:379-390. [PMID: 32390131 DOI: 10.33588/rn.7010.2020121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Like every year, after the ECTRIMS Congress, renowned Spanish neurologists who are experts in multiple sclerosis presented the main novelties in research in this field at the Post-ECTRIMS Meeting. AIM To summarise the content presented at the 12th edition of the Post-ECTRIMS Meeting, which took place in September 2019 in Sevilla and is presented in two parts. DEVELOPMENT This first part addresses the latest studies on vitamin D deficiency and the discrepancies that currently exist regarding its treatment. The advances made in epigenetics allow us to present this approach as a possible biomarker of multiple sclerosis. An account is provided to explain the growing importance of imaging techniques to detect atrophy and other phenomena that occur during the disease, such as changes in iron concentration or remyelination processes, which allow us to further our understanding of the mechanisms of cortical pathology, and the dimensionality of neurodegeneration during its course. Findings related to immunological mechanisms and advances in potential antigen-specific therapies are discussed. The contribution presents the latest studies on the assessment of cognitive impairment and its rehabilitation, which are becoming increasingly important due to the high prevalence of these disorders and the absence of their systematic assessment in clinical practice. Finally, the unmet social and health needs of multiple sclerosis patients in our country are presented, with emphasis on the current deficits in the system of social protection.
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Affiliation(s)
- O Fernández
- Instituto de Investigación Biomédica de Málaga. IBIMA, Málaga, España
| | - Y Aladro
- Hospital Universitario de Getafe, 28905 Getafe, España
| | - R Arroyo
- Hospital Quirón, Pozuelo de Alarcón, España
| | - Ll Brieva
- Hospital Arnau de Vilanova, 25198 Lleida, España
| | | | | | - M Comabella
- Hospitals Vall d'Hebron, 08035 Barcelona, España
| | | | - S Eichau
- Hospital Universitario Virgen Macarena, 41003 Sevilla, España
| | - J A García-Merino
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - R Ginestal
- Fundación Jiménez Díaz, 28040 Madrid, España
| | | | | | | | | | | | - A Oterino
- Hospital Universitario Marqués de Valdecilla, Santander, España
| | - J M Prieto
- Complejo Hospitalario Universitario de Santiago de Compostela, 15706 Santiago de Compostela, España
| | - J Río
- Hospitals Vall d'Hebron, 08035 Barcelona, España
| | | | - L Romero-Pinel
- Hospital General Universitari de Bellvitge, 08907 Hospitalet de Ll., España
| | - N Téllez
- Hospital Clínico Universitario, 47005 Valladolid, España
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Tabone M, Bressa C, García-Merino JA, Moreno-Pérez D, Van EC, Castelli FA, Fenaille F, Larrosa M. The effect of acute moderate-intensity exercise on the serum and fecal metabolomes and the gut microbiota of cross-country endurance athletes. Sci Rep 2021; 11:3558. [PMID: 33574413 PMCID: PMC7878499 DOI: 10.1038/s41598-021-82947-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/06/2020] [Indexed: 01/30/2023] Open
Abstract
Physical exercise can produce changes in the microbiota, conferring health benefits through mechanisms that are not fully understood. We sought to determine the changes driven by exercise on the gut microbiota and on the serum and fecal metabolome using 16S rRNA gene analysis and untargeted metabolomics. A total of 85 serum and 12 fecal metabolites and six bacterial taxa (Romboutsia, Escherichia coli TOP498, Ruminococcaceae UCG-005, Blautia, Ruminiclostridium 9 and Clostridium phoceensis) were modified following a controlled acute exercise session. Among the bacterial taxa, Ruminiclostridium 9 was the most influenced by fecal and serum metabolites, as revealed by linear multivariate regression analysis. Exercise significantly increased the fecal ammonia content. Functional analysis revealed that alanine, aspartate and glutamate metabolism and the arginine and aminoacyl-tRNA biosynthesis pathways were the most relevant modified pathways in serum, whereas the phenylalanine, tyrosine and tryptophan biosynthesis pathway was the most relevant pathway modified in feces. Correlation analysis between fecal and serum metabolites suggested an exchange of metabolites between both compartments. Thus, the performance of a single exercise bout in cross-country non-professional athletes produces significant changes in the microbiota and in the serum and fecal metabolome, which may have health implications.
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Affiliation(s)
- Mariangela Tabone
- MAS Microbiota Research Group, Faculty of Biomedical Sciences, Universidad Europea de Madrid, 28670, Villaviciosa de Odón, Madrid, Spain
| | - Carlo Bressa
- MAS Microbiota Research Group, Faculty of Biomedical Sciences, Universidad Europea de Madrid, 28670, Villaviciosa de Odón, Madrid, Spain
| | - Jose Angel García-Merino
- MAS Microbiota Research Group, Faculty of Biomedical Sciences, Universidad Europea de Madrid, 28670, Villaviciosa de Odón, Madrid, Spain
| | - Diego Moreno-Pérez
- Departamento de Educación, Métodos de Investigación y Evaluación, Universidad Pontificia de Comillas, ICAI-ICADE, 28015, Cantoblanco, Madrid, Spain
| | - Emeline Chu Van
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), MetaboHUB, 91191, Gif sur Yvette, France
| | - Florence A Castelli
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), MetaboHUB, 91191, Gif sur Yvette, France
| | - François Fenaille
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), MetaboHUB, 91191, Gif sur Yvette, France.
| | - Mar Larrosa
- MAS Microbiota Research Group, Faculty of Biomedical Sciences, Universidad Europea de Madrid, 28670, Villaviciosa de Odón, Madrid, Spain.
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López-Pájaro LF, Ruiz-Antorán B, Marín-Serrano E, Cazorla-Calleja R, Iglesias-Escalera G, Lara-Herguedas J, García-Merino JA, Avendaño-Solá C, Sancho-López A. [Descriptive analysis of the electroencephalogram in Angelman syndrome]. Rev Neurol 2021; 72:51-60. [PMID: 33438195 DOI: 10.33588/rn.7202.2020548] [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: 11/24/2022]
Abstract
INTRODUCTION Angelman syndrome is a neurodevelopmental disorder of genetic origin, with important clinical motor, behavioural, communicative and electroencephalographic manifestations, with particular relevance as regards the presence of epileptic seizures. AIMS To describe the electroencephalographic characteristics (qualitatively and quantitatively) of patients diagnosed with Angelman syndrome and to determine the electroencephalographic profile according to age and genetic alteration. PATIENTS AND METHODS A retrospective observational study in which the demographic, clinical and electroencephalographic characteristics of 51 patients with Angelman syndrome were analysed. RESULTS A higher delta power was evident in all brain regions, with a maximum peak in the frontopolar and temporal regions, and a lower power in the alpha and beta frequency range in all regions, with a greater preponderance in younger patients, and a trend that decreases with age. The coherence showed a predominance of delta and theta in the frontopolar region, which was higher for all frequencies in the deletion group, where delta was predominant, especially in the frontopolar region. CONCLUSION The electroencephalogram could be a useful biomarker as a qualitative and quantitative tool in the investigation of Angelman syndrome and in measuring the response to possible therapies under investigation.
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Affiliation(s)
- L F López-Pájaro
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - B Ruiz-Antorán
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - E Marín-Serrano
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - R Cazorla-Calleja
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - G Iglesias-Escalera
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - J Lara-Herguedas
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - J A García-Merino
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - C Avendaño-Solá
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - A Sancho-López
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
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Otero-Romero S, Rodríguez-García J, Vilella A, Ara JR, Brieva L, Calles C, Carmona O, Casanova V, Costa-Frossard L, Eichau S, García-Merino JA, Garcia-Vidal C, González-Platas M, Llaneza M, Martínez-Ginés M, Meca-Lallana JE, Prieto JM, Rodríguez-Antigüedad A, Tintoré M, Blanco Y, Moral E. Recommendations for vaccination in patients with multiple sclerosis who are eligible for immunosuppressive therapies: Spanish consensus statement. Neurologia 2020; 36:50-60. [PMID: 32561334 DOI: 10.1016/j.nrl.2020.02.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 01/20/2020] [Accepted: 02/01/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The recent development of highly effective treatments for multiple sclerosis (MS) and the potential risk of infectious complications require the development of prevention and risk minimisation strategies. Vaccination is an essential element of the management of these patients. This consensus statement includes a series of recommendations and practical scenarios for the vaccination of adult patients with MS who are eligible for highly effective immunosuppressive treatments. METHODOLOGY A formal consensus procedure was followed. Having defined the scope of the statement, we conducted a literature search on recommendations for the vaccination of patients with MS and specific vaccination guidelines for immunosuppressed patients receiving biological therapy for other conditions. The modified nominal group technique methodology was used to formulate the recommendations. DEVELOPMENT Vaccination in patients who are candidates for immunosuppressive therapy should be considered before starting immunosuppressive treatment providing the patient's clinical situation allows. Vaccines included in the routine adult vaccination schedule, as well as some specific ones, are recommended depending on the pre-existing immunity status. If immunosuppressive treatment is already established, live attenuated vaccines are contraindicated. For vaccines with a correlate of protection, it is recommended to monitor the serological response in an optimal interval of 1-2 months from the last dose.
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Affiliation(s)
- S Otero-Romero
- Servicio de Medicina Preventiva, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, España; Centro de Esclerosis Múltiple de Catalunya (Cemcat), Departamento de Neurología/Neuroimmunología, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, España.
| | - J Rodríguez-García
- Servicio de Medicina Preventiva, Hospital Universitari Son Espases, Palma de Mallorca, Islas Baleares, España
| | - A Vilella
- Servicio de Medicina Preventiva, Hospital Clínic, Universidad de Barcelona-ISGlobal, Barcelona, España
| | - J R Ara
- Servicio de Neurología, Hospital Universitario Miguel Servet, Zaragoza, España
| | - L Brieva
- Servicio de Neurología. IRBLLEIDA. Hospital Arnau de Vilanova, Lérida, España
| | - C Calles
- Servicio de Neurología, Hospital Universitario Son Espases, Palma de Mallorca, Islas Baleares, España
| | - O Carmona
- Servicio de Neurología, Fundació Salut Empordà, Figueras, Gerona, España
| | - V Casanova
- Unidad de Esclerosis Múltiple, Hospital Universitario La Fe, Valencia, España
| | - L Costa-Frossard
- Servicio de Neurología, Fundación para la Investigación Biomédica IRyCIS, Hospital Ramón y Cajal, Madrid, España
| | - S Eichau
- Unidad CSUR de Esclerosis Múltiple, Hospital Universitario Virgen Macarena, Sevilla, España
| | | | - C Garcia-Vidal
- Departamento de Enfermedades Infecciosas, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, España
| | - M González-Platas
- Servicio de Neurología, Hospital Universitario de Canarias, Tenerife, España
| | - M Llaneza
- Sección de Neurología, Complejo Hospitalario Universitario de Ferrol, Ferrol, La Coruña, España
| | | | - J E Meca-Lallana
- CSUR Esclerosis Múltiple, Servicio de Neurología, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Cátedra de Neuroinmunología Clínica y Esclerosis Múltiple, Universidad Católica San Antonio, Murcia, España
| | - J M Prieto
- Servicio de Neurología, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, La Coruña, España
| | - A Rodríguez-Antigüedad
- Servicio de Neurología, Hospital Universitario Cruces-Osakidetza, Baracaldo, Vizcaya, España
| | - M Tintoré
- Centro de Esclerosis Múltiple de Catalunya (Cemcat), Departamento de Neurología/Neuroimmunología, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, España
| | - Y Blanco
- Servicio de Neurología, Hospital Clinic, Barcelona, España
| | - E Moral
- Servicio de Neurología, Hospital Moises Broggi y Hospital General de L'Hospitalet, Hospitalet de Llobregat, Barcelona, España
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Fernández O, Aladro Y, Arroyo R, Brieva L, Calles-Hernández MC, Carrascal P, Comabella M, Costa-Frossard L, Eichau S, García-Merino JA, Ginestal R, González I, Izquierdo G, Martínez-Ginés ML, Meca-Lallana JE, Mendibe-Bilbao MM, Oterino A, Prieto JM, Río J, Ramió-Torrentà L, Romero-Pinel L, Téllez N, Rodríguez-Antigüedad A. 12th Post-ECTRIMS Meeting: review of the novelties from the 2019 ECTRIMS Congress (II). Rev Neurol 2020; 70:417-429. [PMID: 32436209 DOI: 10.33588/rn.7011.2020122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Like every year, after the ECTRIMS Congress, renowned Spanish neurologists who are experts in multiple sclerosis presented the main novelties in research in this field at the Post-ECTRIMS Meeting. AIM To summarise the content presented at the 12th edition of the Post-ECTRIMS Meeting, which took place in September 2019 in Sevilla and is presented in two parts. DEVELOPMENT In this second part, the most recent evidence on the use of disease-modifying treatments during pregnancy is presented. Details are provided concerning the results of phase 3 clinical trials conducted to evaluate the efficacy and safety of two potential disease-modifying treatments for relapsing-remitting multiple sclerosis: ponesimod and ofatumumab. For the progressive forms, both available disease modifying treatments and others still in the research phase are reviewed. In the field of stem cell therapies, the article includes the results of the only clinical trial carried out to date comparing patients with relapsing-remitting multiple sclerosis treated with autologous haematopoietic stem cell transplantation and those treated with disease-modifying therapies. There are no important developments as regards symptomatic treatments, although the European Academy of Neurology has published a guide on palliative care. The various sources of information that collect pharmacovigilance data in the post-marketing setting are reviewed. CONCLUSIONS Patients diagnosed in recent years tend to have less severe multiple sclerosis, probably due to the fact that it is diagnosed in its milder stages together with the steady increase in the number of treatments available.
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Affiliation(s)
- O Fernández
- Instituto de Investigación Biomédica de Málaga. IBIMA, Málaga, España
| | - Y Aladro
- Hospital Universitario de Getafe, 28905 Getafe, España
| | - R Arroyo
- Hospital Quirón, Pozuelo de Alarcón, España
| | - Ll Brieva
- Hospital Arnau de Vilanova, 25198 Lleida, España
| | | | | | - M Comabella
- Hospitals Vall d'Hebron, 08035 Barcelona, España
| | | | - S Eichau
- Hospital Universitario Virgen Macarena, 41003 Sevilla, España
| | - J A García-Merino
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - R Ginestal
- Fundación Jiménez Díaz, 28040 Madrid, España
| | | | | | | | | | | | - A Oterino
- Hospital Universitario Marqués de Valdecilla, Santander, España
| | - J M Prieto
- Complejo Hospitalario Universitario de Santiago de Compostela, 15706 Santiago de Compostela, España
| | - J Río
- Hospitals Vall d'Hebron, 08035 Barcelona, España
| | | | - L Romero-Pinel
- Hospital General Universitari de Bellvitge, 08907 Hospitalet de Ll., España
| | - N Téllez
- Hospital Clínico Universitario, 47005 Valladolid, España
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Oreja-Guevara C, García-Merino JA, Saiz A, Rodríguez-Antigüedad A, Álvarez-Cermeño JC, Estrada-Pérez V, Izquierdo G, Fernández O. [Recommendations for the use of cladribine tablets in recurring multiple sclerosis]. Rev Neurol 2019; 69:1-9. [PMID: 31933293 DOI: 10.33588/rn.69s02.2019380] [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: 11/24/2022]
Abstract
INTRODUCTION Cladribine is a prodrug, a synthetic analogue of deoxyadenosine, approved for use as selective immune reconstitution therapy in very active recurring multiple sclerosis in adults. AIMS To review the development of the drug, its mechanism of action and the efficacy and safety data obtained to date, as well as to establish recommendations of Spanish experts for its use in clinical practice. DEVELOPMENT The treatment of multiple sclerosis has been simplified with cladribine tablets, and two short courses of administration for two consecutive years (maximum 20 days) are needed to maintain an efficacy of up to four years after the first dose. Results of clinical trials have demonstrated the safety, tolerability and long-term efficacy of cladribine tablets in patients with recurring multiple sclerosis. Thus, patients treated with cladribine presented a significant reduction in the rate of flare-ups, in the risk of disability progression and in the development of new lesions in magnetic resonance imaging compared to those treated with placebo. In terms of safety, the treated patients had a higher frequency of lymphopenia, in relation to its mechanism of action, and of infections by herpes zoster virus. Long-term results with eight years' follow-up have shown that treated patients are not at greater risk of developing serious events, such as malignant neoplasms or opportunistic infections. CONCLUSIONS Cladribine is the first short-course oral therapy that has been shown to be effective and safe in patients with very active recurring multiple sclerosis, and with a sustained effect over time. The recommendations of Spanish experts on its usage are a fundamental complement to the considerations described by the regulatory agencies.
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Affiliation(s)
| | - J A García-Merino
- Hospital Universitario Puerta de Hierro-Majadahonda, 28035 Majadahonda, España
| | - A Saiz
- Hospital Clínic de Barcelona. Institut Clínic de Malalties del Sistema Nerviós, 08036 Barcelona, España
| | | | | | | | | | - O Fernández
- Instituto de Investigación Biomédica de Málaga. IBIMA, Málaga, España
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García-Merino JA, Mercado-Zúñiga C, Torres-Sanmiguel CR, Torres-Torres C. Mechano-optical effects in multiwall carbon nanotubes ethanol based nanofluids. Opt Express 2018; 26:2033-2038. [PMID: 29401924 DOI: 10.1364/oe.26.002033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
A highly sensitive technique for analyzing surface tension and dynamic viscosity of nanofluids was reported. Multiwall carbon nanotubes suspended in ethanol were evaluated. The assistance of a Fabry-Perot interferometer integrated by a small sample volume fluid allowed us to explore the stability and mechanical properties exhibited by the nanostructures. The surface tension and dynamic viscosity of the colloid was examined by using interferometric optical signals reflected from a remnant drop pending at the end of an optical fiber. Nanosecond pulses provided by a Nd:YAG laser source with 9.5 MW/mm2 at 532 nm wavelength were used to induce mechano-optical effects in the liquid drop. The mechanical parameters were approximated, taking into account single optical pulses interacting with an inelastic mass-spring-damper system.
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Álvarez Ayuso L, Rodríguez Marrodán B, Blasco Quílez MR, García-Merino JA, Sánchez Guerrero A. Economic impact of the new oral treatments for multiple sclerosis. Neurologia 2018; 36:95-100. [PMID: 29336841 DOI: 10.1016/j.nrl.2017.10.015] [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: 09/07/2017] [Revised: 10/20/2017] [Accepted: 10/28/2017] [Indexed: 10/18/2022] Open
Abstract
INTRODUCTION Multiple sclerosis (MS) is a chronic disease affecting the central nervous system and is characterised by inflammation, demyelination, gliosis, and axonal damage. The introduction of dimethyl fumarate and teriflunomide has led to an increase in the number of alternative first-line therapies for MS. The objective of this study was to evaluate the economic impact of the incorporation of new oral therapies at the reference unit (CSUR) at Hospital Universitario Puerta de Hierro Majadahonda. MATERIALS AND METHODS We performed a retrospective observational study including patients diagnosed with MS, who underwent treatment with disease-modifying drugs in 2015 and were followed up for a minimum mean time of one year. Data were collected from patients' electronic clinical histories and the pharmacy service's programme for dispensing drugs to outpatients. RESULTS Evaluating the cost of changing 125 patients' treatment from other drugs to dimethyl fumarate and teriflunomide, and comparing this with the cost that would have resulted from maintaining their previous treatment, demonstrated a total saving of €169,107.31 over the study period. CONCLUSIONS In addition to contributing new therapeutic alternatives, dimethyl fumarate and teriflunomide produced an economic saving in MS treatment at our hospital.
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Affiliation(s)
- L Álvarez Ayuso
- Servicio de Farmacia Hospitalaria, Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, España.
| | - B Rodríguez Marrodán
- Servicio de Farmacia Hospitalaria, Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, España
| | - M R Blasco Quílez
- Unidad de Neuroinmunología, Servicio de Neurología, Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, España
| | - J A García-Merino
- Unidad de Neuroinmunología, Servicio de Neurología, Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, España
| | - A Sánchez Guerrero
- Servicio de Farmacia Hospitalaria, Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, España
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García-Merino JA, Martínez-González CL, San Miguel CRT, Trejo-Valdez M, Martínez-Gutiérrez H, Torres-Torres C. Magneto-conductivity and magnetically-controlled nonlinear optical transmittance in multi-wall carbon nanotubes. Opt Express 2016; 24:19552-19557. [PMID: 27557232 DOI: 10.1364/oe.24.019552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The impact of vectorial magnetic field effects on electrical conductivity and nonlinear optical transmittance exhibited by multi-wall carbon nanotubes was studied. The samples were synthetized by an aerosol pyrolysis processing route in a thin film form. Optical signals in a two-wave mixing configuration allowed us to identify two orthogonal directions of propagation for a magnetic field travelling through the nanomaterials studied. A selective modification in optical absorption was considered to be induced by magnetic perturbations in the sample. Standard optical Kerr gate measurements were carried out for exploring the third order nonlinear optical behavior of the film. A capacitive effect influenced by optical and magnetic excitations was distinguished to be characteristic of the sample. Magneto-quantum conductivity sensitive to the direction of an external magnetic field interacting with the tubes was analyzed. Magnetically-induced changes in electronic band parameters seem to be the main responsible for the optical and electrical modulation observed in the nanostructures. Immediate applications for developing magneto-optical and magneto-electrical functions can be contemplated.
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Fernández O, García-Merino JA, Arroyo R, Álvarez-Cermeño JC, Izquierdo G, Saiz A, Olascoaga J, Rodríguez-Antigüedad A, Prieto JM, Oreja-Guevara C, Hernández MA, Moral E, Meca J, Montalbán X. Spanish consensus on the use of natalizumab (Tysabri®)-2013. Neurologia 2013; 30:302-14. [PMID: 24360652 DOI: 10.1016/j.nrl.2013.10.004] [Citation(s) in RCA: 10] [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: 09/25/2013] [Accepted: 10/13/2013] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Natalizumab treatment has been shown to be very efficacious in clinical trials and very effective in clinical practice in patients with relapsing-remitting multiple sclerosis, by reducing relapses, slowing disease progression, and improving magnetic resonance imaging patterns. However, the drug has also been associated with a risk of progressive multifocal leukoencephalopathy (PML). The first consensus statement on natalizumab use, published in 2011, has been updated to include new data on diagnostic procedures, monitoring for patients undergoing treatment, PML management, and other topics of interest including the management of patients discontinuing natalizumab. MATERIAL AND METHODS This updated version followed the method used in the first consensus. A group of Spanish experts in multiple sclerosis (the authors of the present document) reviewed all currently available literature on natalizumab and identified the relevant topics would need updating based on their clinical experience. The initial draft passed through review cycles until the final version was completed. RESULTS AND CONCLUSIONS Studies in clinical practice have demonstrated that changing to natalizumab is more effective than switching between immunomodulators. They favour early treatment with natalizumab rather than using natalizumab in a later stage as a rescue therapy. Although the drug is very effective, its potential adverse effects need to be considered, with particular attention to the patient's likelihood of developing PML. The neurologist should carefully explain the risks and benefits of the treatment, comparing them to the risks of multiple sclerosis in terms the patient can understand. Before treatment is started, laboratory tests and magnetic resonance images should be available to permit proper follow-up. The risk of PML should be stratified as high, medium, or low according to presence or absence of anti-JC virus antibodies, history of immunosuppressive therapy, and treatment duration. Although the presence of anti-JC virus antibodies is a significant finding, it should not be considered an absolute contraindication for natalizumab. This update provides general recommendations, but neurologists must use their clinical expertise to provide personalised follow-up for each patient.
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Affiliation(s)
- O Fernández
- Instituto de Neurociencias Clínicas, Servicio de Neurología, Hospital Regional Universitario Carlos Haya, Fundación Pública Andaluza para la Investigación de Málaga en Biomedicina y Salud, Málaga, España.
| | - J A García-Merino
- Servicio de Neurología, Hospital Universitario Puerta de Hierro, Madrid, España
| | - R Arroyo
- Servicio de Neurología, Hospital Clínico Universitario San Carlos, Madrid, España
| | - J C Álvarez-Cermeño
- Servicio de Neurología, Hospital Universitario Ramón y Cajal, Madrid, España
| | - G Izquierdo
- Servicio de Neurología, Hospital Universitario Virgen Macarena, Sevilla, España
| | - A Saiz
- Servicio de Neurología, Hospital Clinic, Instituto de Investigaciones Biomédicas August Pi i Sunyer, Barcelona, España
| | - J Olascoaga
- Servicio de Neurología, Hospital Universitario de Donostia, San Sebastián, España
| | | | - J M Prieto
- Servicio de Neurología, Hospital Clínico Universitario Santiago de Compostela, Santiago de Compostela, España
| | - C Oreja-Guevara
- Servicio de Neurología, Hospital Clínico Universitario San Carlos, Madrid, España
| | - M A Hernández
- Servicio de Neurología, Hospital Universitario Ntra. Sra. de la Candelaria, Tenerife, España
| | - E Moral
- Servicio de Neurología, Hospital de Sant Joan Despí Moisès Broggi, Barcelona, España
| | - J Meca
- Servicio de Neurología, Hospital Universitario Virgen de la Arrixaca, Murcia, España
| | - X Montalbán
- Centre d'Esclerosi Múltiple de Catalunya (CEMCAT), Hospital Universitari Vall d'Hebron, Barcelona, España
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12
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Fernández O, García-Merino JA, Arroyo R, Álvarez-Cermeño JC, Arbizu T, Izquierdo G, Saiz A, Olascoaga J, Rodríguez-Antigüedad A, Prieto JM, Oreja-Guevara C, Hernández MA, Montalbán X. Spanish consensus on the use of natalizumab (Tysabri(®))--2011. Neurologia 2011; 27:432-41. [PMID: 22078648 DOI: 10.1016/j.nrl.2011.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Accepted: 09/05/2011] [Indexed: 10/15/2022] Open
Abstract
INTRODUCTION Natalizumab is very effective at reducing relapses and delaying disease progression in patients with relapsing-remitting multiple sclerosis (RRMS). However, treatment has also been associated with a risk of progressive multifocal leukoencephalopathy (PML). The aim of this article is to provide a consensus view on the assessment and stratification of these risks, and to improve the management of natalizumab-treated patients. DEVELOPMENT At an initial meeting of experts on multiple sclerosis (the authors of this consensus), the relevant topics of the consensus were determined and assigned for further elaboration. Topics included how to establish benefit and risk in general, stratification for risk of PML, informing patients of benefits/risks, and how to monitor patients during treatment and after discontinuing treatment. During the drafting phase, all available information published or presented at international meetings was reviewed. After a series of review sessions and meetings, the final draft was produced. CONCLUSIONS Although natalizumab is a very effective drug, its use needs to be considered carefully in view of possible adverse effects and the risk of PML in particular. The neurologist should carefully explain the risks and benefits of treatment in terms the patient can best understand. Before starting treatment, baseline laboratory tests and magnetic resonance imaging (MRI) should be available for future comparisons in the event of suspected PML. The risk of PML should be stratified into high, medium and low risk groups according to presence or absence of anti-JC virus antibodies, prior immunosuppressive therapy, and treatment duration. The follow-up, and frequency of MRI scans in particular, should depend on the risk group to which patient belongs. As our understanding of the risk factors for PML develops, it should be possible to offer patients increasingly individualised therapy. This is a consensus that establishes general recommendations, but neurologists must use their clinical expertise to monitor patients individually.
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Affiliation(s)
- O Fernández
- Servicio de Neurología, Instituto de Neurociencias Clínicas, Hospital Regional Universitario Carlos Haya, IMABIS, Málaga, Spain.
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García-Merino JA, Blasco-Quítez MR, Ortiz-Benítez P, Puerta C. [Combined therapy in multiple sclerosis]. Rev Neurol 2003; 36:545-9. [PMID: 12652419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
INTRODUCTION The availability of new drugs has been a significant advance in the therapy of multiple sclerosis over the last years. However, the control of the disease is far from being complete, and some patients respond poorly or not at all to the new drugs. DEVELOPMENT The present paper reviews the approved therapies for multiple sclerosis and examines the advantages of the association of drugs, both with known and possible efficacy, as well as the theoretical basis for such associations and their possible clinical indications. Different designs for clinical trials in combination therapy are analyzed with a consideration of the current difficulties for the use of placebo in multiple sclerosis forms associated with relapses. CONCLUSIONS The achievement of a higher efficacy than the present one is a major challenge in multiple sclerosis therapy. Combination therapy appears to be a reasonable option for that purpose.
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Affiliation(s)
- J A García-Merino
- Servicio de Neurología/Laboratorio de Neuroinmunología, Clínica Puerta de Hierro, Madrid, España.
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14
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Serrano-Munuera C, Rojas-García R, Gallardo E, De Luna N, Buenaventura I, Ferrero M, García T, García-Merino JA, González-Rodríguez C, Guerriero A, Marco M, Márquez C, Grau JM, Graus F, Illa I. Antidisialosyl antibodies in chronic idiopathic ataxic neuropathy. J Neurol 2002; 249:1525-8. [PMID: 12420092 DOI: 10.1007/s00415-002-0882-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Antidisialosyl antibodies were found in two out of 13 patients with chronic idiopathic ataxic neuropathy (CIAN) and not in 32 patients with different sensory neuropathies of known cause. This finding confirms the association of antidisialosyl antibodies and CIAN regardless of the absence of the M band. These antibodies may have pathogenic relevance; however, larger series are needed to establish their clinical significance.
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Affiliation(s)
- C Serrano-Munuera
- Dept. of Neurology, Institut de Recerca, Hospital de la Sta. Creu i St. Pau, Universitat Autònoma de Barcelona, St. Antoni Ma Claret 167, Barcelona 08025, Spain
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Fernández O, Antigüedad A, Arbizu T, Burgués S, Capdevila A, de Castro P, Correa de Sá JC, García-Merino JA, Izquierdo G, Magalhaes A, Montalbán X, Zarranz JJ. [Natural interferon-beta in the treatment of relapsing-remitting multiple sclerosis: a multicenter, randomized, MRI-based, phase II clinical trial]. Rev Neurol 1999; 29:1093-9. [PMID: 10652728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
OBJECTIVE The ability of natural human interferon beta (n-hIFN beta) to reduce multiple sclerosis (MS) activity was investigated in 60 patients with relapsing-remitting MS (RRMS). PATIENTS AND METHODS Patients were randomized to receive either 9 MIU (33 micrograms) of n-hIFN beta by subcutaneous route, three times per week, on alternate days, during one year, or no treatment (control group) during the first six months and then switched to the same treatment for the following six months. Disease activity was monitored monthly by both magnetic resonance imaging (MRI) and clinical parameters. An intergroup analysis (first 6 months of the study) showed fewer active lesions and lower exacerbation rate in the treatment group than in the control group. Similarly, there were more exacerbation-free patients in the treatment group during this time. RESULTS When switched to treatment, the control group showed a significant reduction in the number of active lesions (p = 0.00001) and the exacerbation rate decreased by half. Exacerbation-free patients more than doubled (p = 0.006) and the median time to first exacerbation was significantly prolonged (96 vs > 180 days; p = 0.019). Treatment was extended for 12 additional months at a dose of 6 MIU (22 micrograms) once a week and disease activity persisted under control in 88% of patients. Treatment with n-hIFN beta was well tolerated, adverse events being mild and self-limiting. Sera were analyzed for anti-IFN beta antibodies and neutralizing activity was found in 12% of the patients after two years. CONCLUSION The results of this phase II study show, that n-hIFN beta promotes a significant reduction of disease activity in RRMS as shown by both MRI and clinical variables, and that the treatment is well tolerated, with low antigenicity.
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Affiliation(s)
- O Fernández
- Departamento de Neurología, Hospital Regional de Málaga, España
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Fernández O, Antiquëdad A, Arbizu T, Capdevíla A, de Castro P, Correa de Sa JC, García-Merino JA, Izquierdo G, Magalhaes A, Montalbán X. Treatment of relapsing-remitting multiple sclerosis with natural interferon beta: a multicenter, randomized clinical trial. Mult Scler 1997; 1 Suppl 1:S67-9. [PMID: 9345404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Preliminary results of a multicenter, randomized study on the effect of natural interferon beta (n-INFN-beta) in relapsing-remitting MS are reported. Sixty patients received either no treatment or n-IFN-beta (9 MIU three times a week, subcutaneously). After 6 months, the n-IFN-beta-treated group showed a 58% median reduction in the number of active lesions detected on monthly magnetic resonance imaging scans as well as a 38% reduction in the exacerbation rate as compared with the control group. Side-effects were mild and self-limiting. The study continues according to the protocol.
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Affiliation(s)
- O Fernández
- Department of Neurology, Hospital Carlos Haya, Malaga, Spain
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Pascual ML, Rodríguez C, García-Merino JA, López F, Liaño H, Barceló B. [Posterior fossa syndrome in Hand-Schüller-Christian disease]. Med Clin (Barc) 1984; 82:863. [PMID: 6738218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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