María José Mellado

ORCID: 0000-0003-2251-9666
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About
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Research Areas
  • Tuberculosis Research and Epidemiology
  • HIV Research and Treatment
  • HIV/AIDS Research and Interventions
  • HIV/AIDS drug development and treatment
  • HIV-related health complications and treatments
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Child and Adolescent Health
  • Pneumonia and Respiratory Infections
  • Diagnosis and treatment of tuberculosis
  • Infectious Diseases and Tuberculosis
  • Immunodeficiency and Autoimmune Disorders
  • Pharmaceutical studies and practices
  • Archaeological and Historical Studies
  • Respiratory viral infections research
  • Parasites and Host Interactions
  • Mycobacterium research and diagnosis
  • Viral Infections and Immunology Research
  • Viral gastroenteritis research and epidemiology
  • Ancient Mediterranean Archaeology and History
  • Hepatitis C virus research
  • Classical Antiquity Studies
  • Cytomegalovirus and herpesvirus research
  • Hepatitis B Virus Studies
  • COVID-19 Clinical Research Studies
  • Healthcare Systems and Technology

Hospital La Paz Institute for Health Research
2016-2024

Hospital Universitario de Gran Canaria Doctor Negrín
2008-2024

Pontificia Universidad Javeriana
2024

Hospital Universitario La Paz
2014-2023

Centro de Investigación Biomédica en Red
2021-2023

Universidad Autónoma de Madrid
1993-2023

Instituto de Salud Carlos III
1997-2022

Asociación Española de Urología
2010-2021

Biomedical Research and Innovation Institute of Cadiz
2021

Centro de Investigación en Red en Enfermedades Cardiovasculares
2021

Abstract The aim of the study was to determine incidence viruses causing aseptic meningitis, meningoencephalitis, and encephalitis in Spain. This a prospective study, collaboration with 17 Spanish hospitals, including 581 cases (CSF from all sera 280): meningitis (340), meningoencephalitis (91), (76), febrile syndrome (7), other neurological disorders (32), 35 without clinical information. CSF were assayed by PCR for enterovirus (EV), herpesvirus (herpes simplex [HSV], varicella‐zoster...

10.1002/jmv.23470 article EN Journal of Medical Virology 2012-12-12

We explored the associations of CD4/CD8 ratio with markers immunoactivation, immunosenescence and T-cell subsets, in 37 vertically HIV-infected children adolescents. inversion was associated higher frequencies activated, senescent activated/exhausted CD4+and CD8+ T-cells, a skewed phenotype from naive toward effector memory which persisted after multivariate analysis. Thus, may identify patients immunoactivation despite ART.

10.1097/qad.0b013e32835faa72 article EN AIDS 2013-02-22
Cinta Moraleda Miquel Serna‐Pascual Antoni Soriano‐Arandes Silvia Simó Nebot Cristina Epalza and 87 more Mar Santos Carlos Grasa María José Sanjinés Rodríguez Beatriz Soto Nerea Gallego Yolanda Ruíz María Urretavizcaya-Martínez Marta Pareja Francisco José Sanz-Santaeufemia Victòria Fumadó Miguel Lanaspa Iolanda Jordán Luis Prieto Sylvia Belda Hofheinz Belén Toral-Vázquez Elena Rincón Nuria Gil-Villanueva Ana Méndez‐Echevarría Ana Castillo-Serrano Jacques G. Rivière Pere Soler‐Palacín Pablo Rojo Alfredo Tagarro Rut del Valle Ana Barrios Sara Villanueva Jesús Ruíz-Contreras Lourdes Gutiérrez Cristina Calvo Paula Rodríguez Molino María José Mellado María de Ceano María Penín Serena Villaverde María José de Dios Pérez Enrique Otheo Lola Falcón-Neyra Olaf Neth Peter Olbrich Walter Goycoechea Laura Martín María Iglesias José Antonio Alonso‐Cadenas Blanca Herrero Elvira Cobo Mariam Tovizi Pilar Galán del Río Sara Guillén Adriana Navas María Luz García‐García Marta Llorente Sara Pérez Lucía Figueroa Amanda Bermejo P Mendoza Gema Sabrido María José Hernández Ana Belén Jiménez Arantxa Berzosa Marta Illán Ramos Maria de Lourdes Amaral Bernardino Julia Jensen Paula Vidal Sara Domínguez‐Rodríguez Lourdes Gutiérrez Angustias Ocaña I. Belinchón María Fernanda Guzmán María‐Jesús Pascual Ana López Machín Beatriz Ruiz Ana Ruiz María José Méndez Ángela María Rincón Hurtado Fátima Ara Fernando Cabañas Manuel Oltra Álvaro Villarroya María Isabel Sánchez-Códez Elena Montesinos Mercedes Aguirre Neus Rius Alba Gómez Rafael Bretón Margarita Rodríguez-Benjumea Ana Sara Martins de Campos Mercedes García Reymundo

Abstract Some clusters of children with a multisystem inflammatory syndrome (MIS-C) associated severe acute respiratory coronavirus 2 (SARS-CoV-2) infection have been reported. We describe the epidemiological and clinical features MIS-C in Spain. is potentially condition that presents recent SARS-CoV-2 infection.

10.1093/cid/ciaa1042 article EN other-oa Clinical Infectious Diseases 2020-07-22

Background. Combination antiretroviral therapy (cART) generally suppresses the replication of human immunodeficiency virus type 1 (HIV-1) but does not cure infection, because proviruses persist in stable latent reservoirs. It has been proposed that low-level proviral reservoirs might predict longer virologic control after discontinuation treatment. Our objective was to evaluate impact very early initiation cART and temporary treatment interruption on size HIV-1 reservoir vertically infected children.

10.1093/cid/civ456 article EN cc-by-nc-nd Clinical Infectious Diseases 2015-06-10

Molecular epidemiological studies suggest that particular Mycobacterium tuberculosis strains have an enhanced capacity to spread within a community. One strain, the Beijing genotype, has been associated with outbreaks in number of communities throughout world. IS6110 restriction fragment length polymorphism (RFLP) analysis was performed on M. isolates from 566 721 patients (78.5%) diagnosed (TB) Gran Canaria Island 1993 1996, as well 35% 1991–1992 (85 strains). RFLP identification family...

10.1164/ajrccm.164.7.2101031 article EN American Journal of Respiratory and Critical Care Medicine 2001-10-01

The frequency and determinants of exogenous reinfection endogenous reactivation tuberculosis in patients previously treated are poorly understood. In Gran Canaria Island, Spain, between 1991 1996, 962 cases were confirmed by culture. Drug susceptibility testing was performed on available bacterial isolates IS6110-based RFLP genotyping carried out. Twenty-three (2.4%) had two positive cultures separated at least 12 mo, 18 whom DNA for genotypic analysis. initial final from eight (44%)...

10.1164/ajrccm.163.3.2003070 article EN American Journal of Respiratory and Critical Care Medicine 2001-03-01

Future strategies aiming to achieve HIV-1 remission are likely target individuals with small reservoir size.We retrospectively investigated factors associated DNA levels in European, perinatally HIV-infected children starting antiretroviral therapy (ART) <6 months of age.Total was measured from 51 long-term suppressed aged 6.3 years (median) after initial viral suppression. Factors log10 total were analyzed using linear regression.At ART initiation, median [IQR] 2.3 [1.2-4.1] months, CD4% 37...

10.1097/qai.0000000000001789 article EN cc-by-nc JAIDS Journal of Acquired Immune Deficiency Syndromes 2018-06-28
Carolina Beltrán-Pavez Miguel Gutiérrez-López Marina Rubio-Garrido Ana Valadés-Alcaraz Luis Prieto and 95 more José Tomás Ramos Santiago Jiménez de Ory Marisa Navarro Cristina Díez-Romero Federico Pulido Eulalia Valencia África Holguín María José Mellado Luis Escosa Milagros García López Hortelano Talía Sainz María Isabel González-Tomé Pablo Rojo Daniel Blázquez‐Gamero Luis Prieto Cristina Epalza José Tomás Ramos Sara Guillén María Luisa Navarro Jesús Saavedra Mar Santos Begoña Santiago David Aguilera‐Alonso Santiago Jiménez de Ory Itzíar Carrasco Miguel Ángel Roa María Penín Jorge Martínez Katie Badillo Eider Oñate Itziar Pocheville Elisa Garrote Elena Colino Jorge Gómez Sirvent M. González-Ripoll Garzón Vicente Román Raquel Ferrer Angulo Olaf Neth Lola Falcón-Neyra Pedro Terol Juan Luis Santos David Moreno Francisco Lendínez Estrella Peromingo J. Uberos Beatriz Ruiz Ana María Gandarillas Grande Francisco J. Romero Carlos Pérez Miguel Lillo Begoña Losada Mercedes Herranz Matilde Bustillo Alonso Pilar Collado José Antonio Couceiro Leticia Vila Consuelo Calviño Ana Isabel Piqueras Manuel Oltra César Gavilán Elena Montesinos Marta Dapena Cristina Álvarez Beatriz Jiménez Ana Gloria Andrés Víctor Marugán Carlos Ochoa Santiago Alfayate Ana Ruiz Y. Ruiz del Prado Pere Soler‐Palacín Marie Antoinette Frick Antonio Mǔr N. López Segura María Luaces Lluís Mayol Teresa Vallmanya Olga Calavia Lourdes García María Teresa Balaguer Coll Valentí Pineda Neus Rius Joaquín Dueñas Clàudia Fortuny Antoni Noguera‐Julián José I. Bernardino Marisa Montes Eulalia Valencia Rafael Rubio Federico Pulido Otilia Bisbal Gabriel Gaspar Alonso Juan Berenguer Cristina Díez Teresa Aldámiz

Abstract The aim of this transversal study was to describe the virological and immunological features HIV-infected youths transferred from pediatric adult care units since 1997 vs. non-transferred patients Madrid Cohort children adolescents in Spain. We included 106 184 under clinical follow-up 17 public hospitals by end December 2017. Virological outcomes were compared patients. ART drug resistance mutations HIV-variants analyzed all subjects with available pol genotypes and/or genotypic...

10.1038/s41598-020-70861-x article EN cc-by Scientific Reports 2020-10-09

HIV-infected adults display increased cardiovascular disease, probably driven by inflammation and immune activation. These relationships have not been addressed in vertically children adolescents, a population at very high risk for long-term non-AIDS complications.Carotid intima media thickness (IMT) was measured cohort of adolescents healthy controls. C-reactive protein markers activation (CD38⁺HLA-DR⁺) senescence (CD28⁻CD57⁺) were determined.One hundred fifty patients 150 controls...

10.1097/qai.0b013e3182a9466a article EN JAIDS Journal of Acquired Immune Deficiency Syndromes 2013-08-27

Children are at higher risk of tuberculosis (TB) dissemination and extrapulmonary disease, contributing greatly to TB-associated morbidity long-term sequelae. However, there very few studies that assess the impact clinical spectrum pediatric TB (EPTB) in low-prevalence regions.Children <18 years age diagnosed with Madrid region (2005-2013) were reviewed. We compared epidemiology, characteristics performance diagnostic tests childhood pulmonary disease. performed a multivariate logistic...

10.1097/inf.0000000000001270 article EN The Pediatric Infectious Disease Journal 2016-06-16

Human parechoviruses (HPeV) have been recently recognized as important viral agents in paediatric infections. The aims of this study were to investigate the HPeV infection prevalence infants <1 month Spain and, secondly, analyse clinical and epidemiological characteristics infected patients compared with those by enterovirus (EV). Infants neurological or systemic symptoms included a multicentre prospective study. EV detection RT-PCR genotyping performed cerebrospinal fluids (CSF), sera...

10.1007/s00431-015-2566-9 article EN cc-by European Journal of Pediatrics 2015-05-15

The epidemiology and clinical association of enterovirus (EV) parechovirus (HPeV) infections, as well the type‐distribution‐according‐to‐age, were determined during a 4‐year study period in Spain. During 2010–2013, total 21,832 samples screened for EV detection frequency was 6.5% (1,430). Of EV‐negative samples, only 1,873 from 2011 to 2013 available HPeV testing. detected 42 (2%) them. Positive genotyped using PCR sequencing. infections occurred all age groups patients: neonates (17%),...

10.1002/jmv.24658 article EN Journal of Medical Virology 2016-08-09

Paediatric HIV disease is now, in the era of highly effective antiretroviral therapy (HAART), a chronic treatable disease, yet across Europe significant and death still occur despite apparent immune reconstitution, much this attributable to vaccine-preventable disease. The complexities HIV-associated immunocompromise paediatric age range, profile time-course reconstitution produced by HAART initiated at various ages stages are poorly characterized. Available data point multiple causative...

10.1111/j.1468-1293.2011.00982.x article EN HIV Medicine 2012-02-02

Abstract Background Carbapenem-resistant Enterobacteriaceae (CRE) are an emerging problem in the paediatric population worldwide with high mortality rates bloodstream infection (BSI). Objectives To evaluate predictors of 30 day CRE BSI a cohort. Methods A retrospective observational single-centre study (December 2005–August 2018) was conducted. Cases children 0 to 16 years were included. Microbiological identification (MALDI Biotyper) and antimicrobial susceptibility testing (Vitek2®...

10.1093/jac/dkaa397 article EN Journal of Antimicrobial Chemotherapy 2020-09-02

We aimed to identify risk factors causing critical disease in hospitalized children with COVID-19 and build a predictive model anticipate the probability of need for care.We conducted multicenter, prospective study SARS-CoV-2 infection 52 Spanish hospitals. The primary outcome was care. used multivariable Bayesian estimate needing care.The enrolled 350 from March 12, 2020, July 1, 2020: 292 (83.4%) 214 (73.7%) were considered have relevant COVID-19, whom 24.2% required Four major clinical...

10.1097/inf.0000000000003204 article EN The Pediatric Infectious Disease Journal 2021-07-12

Aim: To describe the impact of tenofovir disoproxil fumarate (TDF) use on renal function in HIV-infected pediatric patients. Design: It is a prospective, multicenter study. The setting consisted five third-level hospitals Spain. study was conducted patients aged 18 years and younger who had received TDF for at least 6 months. intervention based parameters by urine serum analyses. main outcome measures were results following months therapy. Results: Forty included (32 white 26 diagnosed with...

10.1097/qad.0b013e328340fdca article EN AIDS 2010-11-12

Background Antiretroviral treatment (ART) has contributed to increased life expectancy of HIV-1 infected children. In developed countries, an increasing number children reaching adulthood are transferred adult units. The objectives were describe the demographic and clinical features, ART history, antiviral drug resistance susceptibility in perinatally adolescents care units Spain from Madrid Cohort Methods Clinical, virological immunological features vertically patients HIV-infected analyzed...

10.1371/journal.pone.0052155 article EN cc-by PLoS ONE 2012-12-17

Successful antiretroviral therapy (ART) has dramatically reduced mortality among HIV-infected children. However, there is growing concern about long-term effects associated to ART. The aim of this study was determine the prevalence metabolic abnormalities in a cohort perinatally adolescents and young adults identify factors.We present results from cross-sectional analysis including individuals 12 20 years age, prospective, longitudinal perinatally-acquired children, Madrid. Clinical...

10.1186/s12879-015-0853-8 article EN cc-by BMC Infectious Diseases 2015-03-06

Abstract We describe a case of virological failure during initial treatment with tenofovir disoproxil fumarate/emtricitabine/dolutegravir twice daily, concomitant rifampin staphylococcal infection, selection R263K + E157Q, and low plasma dolutegravir levels. Using together may require closer follow-up, and, if possible, levels should be monitored.

10.1093/ofid/ofy332 article EN cc-by-nc-nd Open Forum Infectious Diseases 2018-12-10

Summary We report the largest study on prevalence and distribution of HCV genotypes in Spain (2000‐2015), we relate them with clinical, epidemiological virological factors. Patients from 29 hospitals 10 autonomous communities (Andalusia, Aragon, Castilla‐Leon, Catalonia, Galicia, Canary Islands, Madrid Community, Valencian Murcia Region Basque Country) have been studied. Annual subtypes, as well gender, age, transmission route, HIV and/or HBV coinfection, treatment details were recorded....

10.1111/jvh.12700 article EN Journal of Viral Hepatitis 2017-03-01
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