Análisis metagenómico de la microbiota intestinal en pacientes con psoriasis de tipo 1

Introduction: Psoriasis is a chronic, immune-mediated inflammatory disease. Type 1 psoriasis (Ps1) or early onset psoriasis is the most common form of psoriasis and has a strong genetic component. The gut microbiota is involved in the maturation of the immune system and in multiple metabolic pathways. Disorders in the intestinal bacterial composition or dysbiosis carry important functional consequences and have been implicated in multiple diseases. The objectives of this study were to evaluate differences in the gut microbiota of patients with Ps1 vs. non-psoriatic control subjects (CS). Materials and methods: We studied 38 patients with Ps1 without treatment and 27 CS. Stool samples were collected and the V3-V4 hypervariable regions of the 16S rRNA gene were analyzed using the Illumina MiSeq sequencing platform to determine microbial composition and diversity. Bioinformatic analysis was performed. Results: We did not find differences in biodiversity (alpha diversity) among patients with Ps1 and CS. Beta diversity showed significant differences between both groups (p = 0.032). When comparing the main phyla, only the relative increase of Firmicutes in Ps1 showed significant differences (p < 0.05). At genus level, the LEfSe analysis revealed greater abundance of Faecalibacterium and Blautia in patients with Ps1 and Bacteroides, Paraprevotella, Odoribacter, Anaerotruncus and Oscillospira in CS. Conclusions: The results showed differences in the intestinal microbiota of patients with Ps1 and CS, which would imply that the gut microbiota plays a role in psoriasis pathogenesis.Fil: Dei Cas, Ignacio. No especifíca;Fil: Giliberto, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; ArgentinaFil: Penas Steinhardt, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; Argentina. Universidad Nacional de Lujan. Departamento de Ciencias Básicas. Laboratorio de Genómica Computacional; Argentin

Metagenomic analysis of gut microbiota in non-treated plaque psoriasis patients stratified by disease severity: development of a new Psoriasis-Microbiome Index

Psoriasis is an immune-mediated skin disorder. Imbalance of gut microbial populations has been implicated in many diseases. We aimed to investigate whether there were differences in gut microbiota in psoriasis patients vs non-psoriasis controls and between psoriasis severity groups. 55 psoriasis patients and 27 controls were included. V3–V4 regions of the 16S rRNA gene of fecal samples were analyzed using Illumina MiSeq. Bioinformatic analysis was performed. We found changes in gut microbiome composition depending on their psoriasis status as determined by weighted unifrac (p 2). Moderate-to-severe psoriasis patients had lower biodiversity than mild psoriatic patients (p = 0.049). No differences for beta-diversity were found. We developed a Psoriasis-Microbiota Index (PMI), which discriminated among psoriasis patients and controls with sensitivity: 0.78 and specificity: 0.79. Furthermore, we performed a meta-analysis with published data to validate this index. We demonstrated gut dysbiosis in psoriasis patients, suggesting a role in psoriasis pathophysiology. Furthermore, we developed a PMI with the potential to discriminate between psoriasis patients and controls across different populations, which could be used as a biomarker in the clinical practice.Fil: Dei Cas, Ignacio. Universidad de Buenos Aires. Facultad de Medicina; Argentina. Gobierno de la Provincia de Buenos Aires. Hospital Interzonal General de Agudos Presidente Peron; Argentina. Psoriasis BsAs; ArgentinaFil: Giliberto, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología; ArgentinaFil: Luce, Leonela Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología; ArgentinaFil: Dopazo, Hernán Javier. Biocodices Genómica Médica Personalizada; . Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Penas Steinhardt, Alberto. Universidad Nacional de Lujan. Departamento de Ciencias Básicas. Laboratorio de Genómica Computacional; Argentina. Instituto Universidad de la Fundación "Héctor Barceló"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Erratum to : Secukinumab is Efficacious and Safe in Hispanic Patients with Moderate-to-Severe Plaque Psoriasis: Pooled Analysis of Four Phase 3 Trials

Introduction: There is little evidence available on the efficacy and safety of biologic therapies for the treatment of psoriasis in Hispanic patients. Secukinumab is demonstrated to be highly effective for clearing psoriasis. The aim of this study was to compare the efficacy and safety of secukinumab in Hispanic and non-Hispanic patients. Methods: Data were pooled from four phase 3 studies of secukinumab in patients with moderate-to-severe plaque psoriasis. Patients who self-identified as Hispanic were included in the Hispanic subgroup.Results: Efficacy responses (Psoriasis Area and Severity Index [PASI] 75/90/100 and Investigator's Global Assessment 2011 modified version 0/1) for secukinumab 300 mg were greater than for etanercept at week 12 in the Hispanic and non-Hispanic patient subgroups. At week 12 with secukinumab 300 mg, PASI 90/100 responses were achieved by 70.6%/35.9% of Hispanic patients and 58.0%/28.1% of non-Hispanic patients. At week 12 with secukinumab 150 mg, PASI 90/100 responses were achieved by 59.5%/25.1% of Hispanic patients and 41.2%/13.4% of non-Hispanic patients. In both subgroups, peak efficacy responses with secukinumab were observed at week 16 and were maintained to week 52.Conclusions: Secukinumab is highly effective for clearing psoriasis in both Hispanic and non-Hispanic patients.Funding: Novartis Pharmaceutical Corporation

Secukinumab is Efficacious and Safe in Hispanic Patients with Moderate-to-Severe Plaque Psoriasis : Pooled Analysis of Four Phase 3 Trials

Altres ajuts: This study was funded by Novartis Pharmaceutical Corporation. Article processing charges and the fee for open access were funded by Novartis Pharmaceutical Corporation. All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this manuscript, take responsibility for the integrity of the work as a whole, and have given final approval for the version to be published. All authors had full access to all of the data in this study and take complete responsibility for the integrity of the data and accuracy of the data analysis. Technical assistance with editing and styling of the manuscript for submission was provided by Scott Forbes, Ph.D., of Oxford PharmaGenesis Inc. and was funded by Novartis Pharmaceuticals Corporation.There is little evidence available on the efficacy and safety of biologic therapies for the treatment of psoriasis in Hispanic patients. Secukinumab is demonstrated to be highly effective for clearing psoriasis. The aim of this study was to compare the efficacy and safety of secukinumab in Hispanic and non-Hispanic patients. Data were pooled from four phase 3 studies of secukinumab in patients with moderate-to-severe plaque psoriasis. Patients who self-identified as Hispanic were included in the Hispanic subgroup. Efficacy responses (Psoriasis Area and Severity Index [PASI] 75/90/100 and Investigator's Global Assessment 2011 modified version 0/1) for secukinumab 300 mg were greater than for etanercept at week 12 in the Hispanic and non-Hispanic patient subgroups. At week 12 with secukinumab 300 mg, PASI 90/100 responses were achieved by 70.6%/35.9% of Hispanic patients and 58.0%/28.1% of non-Hispanic patients. At week 12 with secukinumab 150 mg, PASI 90/100 responses were achieved by 59.5%/25.1% of Hispanic patients and 41.2%/13.4% of non-Hispanic patients. In both subgroups, peak efficacy responses with secukinumab were observed at week 16 and were maintained to week 52. Secukinumab is highly effective for clearing psoriasis in both Hispanic and non-Hispanic patients. Novartis Pharmaceutical Corporation. The online version of this article (doi:10.1007/s12325-017-0521-z) contains supplementary material, which is available to authorized users

Data sharing: A new editorial initiative of the international committee of medical journal editors. Implications for the editors´ network

The International Committee of Medical Journal Editors (ICMJE) provides recommendations to improve the editorial standards and scientific quality of biomedical journals. These recommendations range from uniform technical requirements to more complex and elusive editorial issues including ethical aspects of the scientific process. Recently, registration of clinical trials, conflicts of interest disclosure, and new criteria for authorship -emphasizing the importance of responsibility and accountability-, have been proposed. Last year, a new editorial initiative to foster sharing of clinical trial data was launched. This review discusses this novel initiative with the aim of increasing awareness among readers, investigators, authors and editors belonging to the Editors´ Network of the European Society of Cardiolog

Data sharing: A new editorial initiative of the international committee of medical journal editors. Implications for the editors´ network

The International Committee of Medical Journal Editors (ICMJE) provides recommendations to improve the editorial standards and scientific quality of biomedical journals. These recommendations range from uniform technical requirements to more complex and elusive editorial issues including ethical aspects of the scientific process. Recently, registration of clinical trials, conflicts of interest disclosure, and new criteria for authorship -emphasizing the importance of responsibility and accountability-, have been proposed. Last year, a new editorial initiative to foster sharing of clinical trial data was launched. This review discusses this novel initiative with the aim of increasing awareness among readers, investigators, authors and editors belonging to the Editors´ Network of the European Society of Cardiolog

Authorship: From credit to accountability. Reflections from the Editors´ Network

The Editors´ Network of the European Society of Cardiology (ESC) provides a dynamic forum for editorial discussions and endorses the recommendations of the International Committee of Medical Journal Editors (ICMJE) to improve the scientific quality of biomedical journals. Authorship confers credit and important academic rewards. Recently, however, the ICMJE emphasised that authorship also requires responsibility and accountability. These issues are now covered by the new (fourth) criterion for authorship. Authors should agree to be accountable and ensure that questions regarding the accuracy and integrity of the entire work will be appropriately addressed. This review discusses the implications of this paradigm shift on authorship requirements with the aim of increasing awareness on good scientific and editorial practices