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1.
Public Health ; 230: 163-171, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38555685

RESUMO

OBJECTIVES: Immunisation against preventable diseases as meningitis is crucial from a public health perspective to face challenges posed by these infections. Nurses hold a great responsibility for these programs, which highlights the importance of understanding their preferences and needs to improve the success of campaigns. This study aimed to investigate nurses' preferences regarding Meningococcus A, C, W, and Y (MenACWY) conjugate vaccines commercialised in Spain. STUDY DESIGN: A national-level discrete choice experiment (DCE) was conducted. METHODS: A literature review and a focus group informed the DCE design. Six attributes were included: pharmaceutical form, coadministration evidence, shelf-life, package contents, single-doses per package, and package volume. Conditional logit models quantified preferences and relative importance (RI). RESULTS: Thirty experienced primary care nurses participated in this study. Evidence of coadministration with other vaccines was the most important attribute (RI = 43.78%), followed by package size (RI = 22.17%), pharmaceutical form (RI = 19.07%), and package content (RI = 11.80%). There was a preference for evidence of coadministration with routine vaccines (odds ratio [OR] = 2.579, 95% confidence interval [95%CI] = 2.210-3.002), smaller volumes (OR = 1.494, 95%CI = 1.264-1.767), liquid formulations (OR = 1.283, 95%CI = 1.108-1.486) and package contents including only vial/s (OR = 1.283, 95%CI = 1.108-1.486). No statistical evidence was found for the remaining attributes. CONCLUSIONS: Evidence of coadministration with routine vaccines, easy-to-store packages, and fully liquid formulations were drivers of nurses' preferences regarding MenACWY conjugate vaccines. These findings provide valuable insights for decision-makers to optimize current campaigns.


Assuntos
Vacinas Meningocócicas , Neisseria meningitidis , Enfermeiras e Enfermeiros , Humanos , Espanha , Vacinas Conjugadas , Comportamento de Escolha , Preparações Farmacêuticas
2.
BMC Infect Dis ; 23(1): 385, 2023 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-37291530

RESUMO

Respiratory syncytial virus (RSV) is a leading cause of acute lower respiratory infection (ALRI) in children, causing frequent outpatient visits and hospitalizations. Our study aimed to describe the clinical and direct economic burden of ALRI hospitalizations related to RSV in children in Spain and the characteristics of patients and their episodes. In this retrospective study, ALRI hospitalizations in children aged < 5 years for 2015-2018 were reviewed using anonymized administrative public hospital discharge data from Spain. Three case definitions were considered: (a) RSV-specific; (b) RSV-specific and unspecified acute bronchiolitis (RSV-specific and bronchiolitis); and (c) RSV-specific and unspecified ALRI (RSV-specific and ALRI). The study reported a mean of 36,743 yearly admissions potentially due to RSV, resulting in a mean annual cost of €87.1 million. RSV-specific codes accounted for 39.2% of cases, unspecified acute bronchiolitis for 20.1%, and other unspecified ALRI codes for the remaining 40.6%. The mean hospitalization rate per 1,000 children was 55.5 in the first year of life, 16.0 in the second, and 5.4 between 24 and 59 months. A considerable proportion of cases occurred in children under two years old (> 80.4%) and even during the first year of life (> 61.7%). Otherwise healthy children accounted for 92.9% of hospitalizations and 83.3% of costs during the period. Children born preterm accounted for 1.3% of hospitalizations and 5.7% of costs. The findings revealed that RSV still contributes to a high burden on the Spanish health care system. Children under one year of age and otherwise healthy term infants accounted for most of the substantial clinical and economic burden of RSV. Current evidence potentially underestimates the true epidemiology and burden of severe RSV infection; thus, further studies focusing on the outpatient setting are needed.


Assuntos
Bronquiolite , Infecções por Vírus Respiratório Sincicial , Vírus Sincicial Respiratório Humano , Infecções Respiratórias , Recém-Nascido , Lactente , Humanos , Criança , Estudos Retrospectivos , Estresse Financeiro , Hospitalização , Bronquiolite/epidemiologia , Hospitais Públicos
3.
BMC Infect Dis ; 23(1): 86, 2023 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-36750925

RESUMO

BACKGROUND: Influenza may trigger complications, particularly in at-risk groups, potentially leading to hospitalization or death. However, due to lack of routine testing, influenza cases are infrequently coded with influenza-specific diagnosis. Statistical models using influenza activity as an explanatory variable can be used to estimate annual hospitalizations and deaths associated with influenza. Our study aimed to estimate the clinical and economic burden of severe influenza in Spain, considering such models. METHODS: The study comprised ten epidemic seasons (2008/2009-2017/2018) and used two approaches: (i) a direct method of estimating the seasonal influenza hospitalization, based on the number of National Health Service hospitalizations with influenza-specific International Classification of Diseases (ICD) codes (ICD-9: 487-488; ICD-10: J09-J11), as primary or secondary diagnosis; (ii) an indirect method of estimating excess hospitalizations and deaths using broader groups of ICD codes in time-series models, computed for six age groups and four groups of diagnoses: pneumonia or influenza (ICD-9: 480-488, 517.1; ICD-10: J09-J18), respiratory (ICD-9: 460-519; ICD-10: J00-J99), respiratory or cardiovascular (C&R, ICD-9: 390-459, 460-519; ICD-10: I00-I99, J00-J99), and all-cause. Means, excluding the H1N1pdm09 pandemic (2009/2010), are reported in this study. RESULTS: The mean number of hospitalizations with a diagnosis of influenza per season was 13,063, corresponding to 28.1 cases per 100,000 people. The mean direct annual cost of these hospitalizations was €45.7 million, of which 65.7% was generated by patients with comorbidities. Mean annual influenza-associated C&R hospitalizations were estimated at 34,894 (min: 16,546; max: 52,861), corresponding to 75.0 cases per 100,000 (95% confidence interval [CI]: 63.3-86.3) for all ages and 335.3 (95% CI: 293.2-377.5) in patients aged ≥ 65 years. We estimate 3.8 influenza-associated excess C&R hospitalizations for each hospitalization coded with an influenza-specific diagnosis in patients aged ≥ 65 years. The mean direct annual cost of the estimated excess C&R hospitalizations was €142.9 million for all ages and €115.9 million for patients aged ≥ 65 years. Mean annual influenza-associated all-cause mortality per 100,000 people was estimated at 27.7 for all ages. CONCLUSIONS: Results suggest a relevant under-detected burden of influenza mostly in the elderly population, but not neglectable in younger people.


Assuntos
Influenza Humana , Idoso , Humanos , Estações do Ano , Influenza Humana/epidemiologia , Espanha , Medicina Estatal , Hospitalização , Pandemias
4.
BMC Infect Dis ; 22(1): 759, 2022 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-36175846

RESUMO

Respiratory syncytial virus (RSV) infection is a major cause of morbidity in children. However, its disease burden remains poorly understood, particularly outside of the hospital setting. Our study aimed to estimate the burden of medically attended acute lower respiratory infection (ALRI) cases potentially related to RSV in Spanish children. Longitudinal data from September 2017 to June 2018 of 51,292 children aged < 5 years old from the National Healthcare System (NHS) of two Spanish regions were used. Three case definitions were considered: (a) RSV-specific; (b) RSV-specific and unspecified acute bronchiolitis (RSV-specific and Bronchiolitis), and; (c) RSV-specific and unspecified ALRI (RSV-specific and ALRI). A total of 3460 medically attended ALRI cases potentially due to RSV were identified, of which 257 (7.4%), 164 (4.7%), and 3039 (87.8%) coded with RSV-specific, unspecific bronchiolitis, and unspecific ALRI codes, respectively. Medically attended RSV-specific and ALRI cases per 1000 children was 134.4 in the first year of life, 119.4 in the second, and 35.3 between 2 and 5 years old. Most cases were observed in otherwise healthy children (93.1%). Mean direct healthcare cost per medically attended RSV-specific and ALRI case was €1753 in the first year of life, €896 in the second, and €683 between 2 and 5 years old. Hospitalization was the main driver of these costs, accounting for 55.6%, 38.0% and 33.4%, in each respective age group. In RSV-specific cases, mean direct healthcare cost per medically attended case was higher, mostly due to hospitalization: €3362 in the first year of life (72.9% from hospitalizations), €3252 in the second (72.1%), and €3514 between 2 and 5 years old (74.2%). These findings suggest that hospitalization data alone will underestimate the RSV infections requiring medical care, as will relying only on RSV-specific codes. RSV testing and codification must be improved and preventive solutions adopted, to protect all infants, particularly during the first year of life.


Assuntos
Infecções por Vírus Respiratório Sincicial , Vírus Sincicial Respiratório Humano , Infecções Respiratórias , Criança , Pré-Escolar , Humanos , Lactente , Estresse Financeiro , Hospitalização , Infecções por Vírus Respiratório Sincicial/epidemiologia , Infecções Respiratórias/epidemiologia , Espanha
5.
Int J Biometeorol ; 66(6): 1173-1187, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35275236

RESUMO

Precipitation is one of the meteorological variables usually involved in the aerobiological studies, which presents a complex relationship with atmospheric levels of pollen and fungal spores and the temporal characteristics of their seasons. This complexity is due in a large part to rainfall's twofold impact of having, prior to pollination, a positive influence on subsequent pollen production and of contributing, during pollination, to pollen removal from the air through a wash-out effect. To better explore this impact, we place particular emphasis on extreme rainfall by calculating the correlation between airborne pollen and fungal spore parameters and the precipitation indices that the Expert Team on Climate Change Detection and Indices (ETCCDI) proposed for characterising climate extremes. Parameters for twenty-seven pollen and fungal spore taxa measured in six aerobiological stations in the NE Iberian Peninsula have been considered. We have distinguished between annual and winter ETCCDI in order to compare the correlations between extreme rainfall and airborne pollen concentrations and to avoid the wash-out effect as far as possible. Results show a positive influence from an increase in moderately extreme winter rainfall, specifically on subsequent pollen/fungal spore production: the percentage of all possible significant correlations is higher for winter than for annual rainfall. Furthermore, while annual rainfall in this region has nearly the same number of positive as negative correlations, the positive correlations for winter rainfall are more than twice that of the negative ones. The seasonal consideration on rainfall ETCCDI made with the aim to avoid the confounding overlapping of different rainfall impacts has led to more sharpened observations of its positive and negative effects on airborne pollen and fungal spore concentrations.


Assuntos
Poluentes Atmosféricos , Alérgenos , Poluentes Atmosféricos/análise , Alérgenos/análise , Monitoramento Ambiental , Meteorologia , Pólen , Estações do Ano , Esporos Fúngicos
6.
BMC Anesthesiol ; 19(1): 212, 2019 11 17.
Artigo em Inglês | MEDLINE | ID: mdl-31735161

RESUMO

BACKGROUND: Some studies have been performed to assess the effects of levosimendan on cardiac function when administered to cardiac surgery patients with low cardiac output syndrome (LCOS) in the immediate postoperative period. Levosimendan is an inotropic agent for the treatment of low cardiac output syndrome that seems to have a protective effect on renal function. METHODS: It is a quasi-experimental study. A total of 100 patients with LCOS received either beta-agonists or levosimendan. We assessed the incidence of postoperative kidney failure in cardiac surgery patients. In patients who had kidney failure at diagnosis of LCOS, we examined whether differences existed in the evolution of kidney failure based on the treatment administered for LCOS. The parameters measured included haemodynamics, oxygen supply, and renal function as assessed by the AKI scale. ANOVA, Student's t-test and Wilcoxon or Friedman tests were used. RESULTS: Up to 30% of cardiac surgery patients had kidney failure at diagnosis of LCOS. Kidney failure at discharge from the ICU was more frequent in patients who received beta-agonist drugs as compared to those who received levosimendan (p < 0.05). CONCLUSION: The incidence of kidney failure decreased with the postoperative administration of levosimendan to cardiac surgery patients with LCOS, as compared to beta-agonists. TRIAL REGISTRATION: Current Controlled Trials ISRCTN 46058317. Date of registration: 7/10/2019. Retrospectively registered.


Assuntos
Agonistas Adrenérgicos beta/administração & dosagem , Baixo Débito Cardíaco/tratamento farmacológico , Procedimentos Cirúrgicos Cardíacos/métodos , Cardiotônicos/administração & dosagem , Simendana/administração & dosagem , Idoso , Idoso de 80 Anos ou mais , Baixo Débito Cardíaco/fisiopatologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/prevenção & controle , Insuficiência Renal/epidemiologia , Insuficiência Renal/prevenção & controle
7.
Stem Cells ; 34(9): 2418-28, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27300161

RESUMO

Epigenetic reprogramming is a central process during mammalian germline development. Genome-wide DNA demethylation in primordial germ cells (PGCs) is a prerequisite for the erasure of epigenetic memory, preventing the transmission of epimutations to the next generation. Apart from DNA demethylation, germline reprogramming has been shown to entail reprogramming of histone marks and chromatin remodelling. Contrary to other animal models, there is limited information about the epigenetic dynamics during early germ cell development in humans. Here, we provide further characterization of the epigenetic configuration of the early human gonadal PGCs. We show that early gonadal human PGCs are DNA hypomethylated and their chromatin is characterized by low H3K9me2 and high H3K27me3 marks. Similarly to previous observations in mice, human gonadal PGCs undergo dynamic chromatin changes concomitant with the erasure of genomic imprints. Interestingly, and contrary to mouse early germ cells, expression of BLIMP1/PRDM1 persists in through all gestational stages in human gonadal PGCs and is associated with nuclear lysine-specific demethylase-1. Our work provides important additional information regarding the chromatin changes associated with human PGCs development between 6 and 13 weeks of gestation in male and female gonads. Stem Cells 2016;34:2418-2428.


Assuntos
Reprogramação Celular/genética , Epigênese Genética , Células Germinativas/citologia , Células Germinativas/metabolismo , Gônadas/citologia , Animais , Cromatina/metabolismo , Metilação de DNA/genética , Feminino , Histona Desmetilases/metabolismo , Histonas/metabolismo , Humanos , Lisina/metabolismo , Camundongos , Modelos Biológicos , Fator 1 de Ligação ao Domínio I Regulador Positivo/metabolismo , Especificidade da Espécie , Fatores de Transcrição/metabolismo
8.
Mol Psychiatry ; 21(9): 1215-24, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26239292

RESUMO

With an onset under the age of 3 years, autism spectrum disorders (ASDs) are now understood as diseases arising from pre- and/or early postnatal brain developmental anomalies and/or early brain insults. To unveil the molecular mechanisms taking place during the misshaping of the developing brain, we chose to study cells that are representative of the very early stages of ontogenesis, namely stem cells. Here we report on MOlybdenum COfactor Sulfurase (MOCOS), an enzyme involved in purine metabolism, as a newly identified player in ASD. We found in adult nasal olfactory stem cells of 11 adults with ASD that MOCOS is downregulated in most of them when compared with 11 age- and gender-matched control adults without any neuropsychiatric disorders. Genetic approaches using in vivo and in vitro engineered models converge to indicate that altered expression of MOCOS results in neurotransmission and synaptic defects. Furthermore, we found that MOCOS misexpression induces increased oxidative-stress sensitivity. Our results demonstrate that altered MOCOS expression is likely to have an impact on neurodevelopment and neurotransmission, and may explain comorbid conditions, including gastrointestinal disorders. We anticipate our discovery to be a fresh starting point for the study on the roles of MOCOS in brain development and its functional implications in ASD clinical symptoms. Moreover, our study suggests the possible development of new diagnostic tests based on MOCOS expression, and paves the way for drug screening targeting MOCOS and/or the purine metabolism to ultimately develop novel treatments in ASD.


Assuntos
Transtorno do Espectro Autista/metabolismo , Células-Tronco/metabolismo , Sulfurtransferases/metabolismo , Adulto , Animais , Transtorno do Espectro Autista/genética , Caenorhabditis elegans , Feminino , França , Humanos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Mucosa Olfatória/metabolismo , Neurônios Receptores Olfatórios/metabolismo , Neurônios Receptores Olfatórios/fisiologia , Células-Tronco/fisiologia , Sulfurtransferases/uso terapêutico
10.
Aerobiologia (Bologna) ; 33(2): 181-189, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28579673

RESUMO

The European Commission Cooperation in Science and Technology (COST) Action FA1203 "SMARTER" aims to make recommendations for the sustainable management of Ambrosia across Europe and for monitoring its efficiency and cost-effectiveness. The goal of the present study is to provide a baseline for spatial and temporal variations in airborne Ambrosia pollen in Europe that can be used for the management and evaluation of this noxious plant. The study covers the full range of Ambrosia artemisiifolia L. distribution over Europe (39°N-60°N; 2°W-45°E). Airborne Ambrosia pollen data for the principal flowering period of Ambrosia (August-September) recorded during a 10-year period (2004-2013) were obtained from 242 monitoring sites. The mean sum of daily average airborne Ambrosia pollen and the number of days that Ambrosia pollen was recorded in the air were analysed. The mean and standard deviation (SD) were calculated regardless of the number of years included in the study period, while trends are based on those time series with 8 or more years of data. Trends were considered significant at p < 0.05. There were few significant trends in the magnitude and frequency of atmospheric Ambrosia pollen (only 8% for the mean sum of daily average Ambrosia pollen concentrations and 14% for the mean number of days Ambrosia pollen were recorded in the air). The direction of any trends varied locally and reflected changes in sources of the pollen, either in size or in distance from the monitoring station. Pollen monitoring is important for providing an early warning of the expansion of this invasive and noxious plant.

11.
Reprod Domest Anim ; 51 Suppl 2: 18-24, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27762052

RESUMO

More than eighteen years have passed since the first derivation of human embryonic stem cells (ESCs), but their clinical use is still met with several challenges, such as ethical concerns regarding the need of human embryos, tissue rejection after transplantation and tumour formation. The generation of human induced pluripotent stem cells (iPSCs) enables the access to patient-derived pluripotent stem cells (PSCs) and opens the door for personalized medicine as tissues/organs can potentially be generated from the same genetic background as the patient recipients, thus avoiding immune rejections or complication of immunosuppression strategies. In this regard, successful replacement, or augmentation, of the function of damaged tissue by patient-derived differentiated stem cells provides a promising cell replacement therapy for many devastating human diseases. Although human iPSCs can proliferate unlimitedly in culture and harbour the potential to generate all cell types in the adult body, currently, the functionality of differentiated cells is limited. An alternative strategy to realize the full potential of human iPSC for regenerative medicine is the in vivo tissue generation in large animal species via interspecies blastocyst complementation. As this technology is still in its infancy and there remains more questions than answers, thus in this review, we mainly focus the discussion on the conceptual framework, the emerging technologies and recent advances involved with interspecies blastocyst complementation, and will refer the readers to other more in-depth reviews on dynamic pluripotent stem cell states, genome editing and interspecies chimeras. Likewise, other emerging alternatives to combat the growing shortage of human organs, such as xenotransplantation or tissue engineering, topics that has been extensively reviewed, will not be covered here.


Assuntos
Blastocisto/fisiologia , Células-Tronco Pluripotentes Induzidas/citologia , Células-Tronco Pluripotentes/citologia , Medicina Regenerativa/métodos , Animais , Blastocisto/citologia , Diferenciação Celular , Proliferação de Células , Edição de Genes , Humanos , Técnicas de Cultura de Órgãos , Medicina de Precisão , Sus scrofa
12.
Stem Cells ; 32(2): 436-46, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24420904

RESUMO

Fanconi anemia (FA) is a complex genetic disease associated with a defective DNA repair pathway known as the FA pathway. In contrast to many other FA proteins, BRCA2 participates downstream in this pathway and has a critical role in homology-directed recombination (HDR). In our current studies, we have observed an extremely low reprogramming efficiency in cells with a hypomorphic mutation in Brca2 (Brca2(Δ) (27/) (Δ27)), that was associated with increased apoptosis and defective generation of nuclear RAD51 foci during the reprogramming process. Gene complementation facilitated the generation of Brca2(Δ) (27/) (Δ27) induced pluripotent stem cells (iPSCs) with a disease-free FA phenotype. Karyotype analyses and comparative genome hybridization arrays of complemented Brca2(Δ) (27/) (Δ27) iPSCs showed, however, the presence of different genetic alterations in these cells, most of which were not evident in their parental Brca2(Δ) (27/) (Δ27) mouse embryonic fibroblasts. Gene-corrected Brca2(Δ) (27/) (Δ27) iPSCs could be differentiated in vitro toward the hematopoietic lineage, although with a more limited efficacy than WT iPSCs or mouse embryonic stem cells, and did not engraft in irradiated Brca2(Δ) (27/) (Δ27) recipients. Our results are consistent with previous studies proposing that HDR is critical for cell reprogramming and demonstrate that reprogramming defects characteristic of Brca2 mutant cells can be efficiently overcome by gene complementation. Finally, based on analysis of the phenotype, genetic stability, and hematopoietic differentiation potential of gene-corrected Brca2(Δ) (27/) (Δ) (27) iPSCs, achievements and limitations in the application of current reprogramming approaches in hematopoietic stem cell therapy are also discussed.


Assuntos
Proteína BRCA2/genética , Anemia de Fanconi/genética , Terapia Genética , Células-Tronco Hematopoéticas , Células-Tronco Pluripotentes Induzidas/citologia , Animais , Proteína BRCA2/biossíntese , Diferenciação Celular/genética , Células Cultivadas , Reprogramação Celular , Dano ao DNA/genética , Anemia de Fanconi/patologia , Anemia de Fanconi/terapia , Fibroblastos/metabolismo , Células-Tronco Hematopoéticas/metabolismo , Células-Tronco Pluripotentes Induzidas/metabolismo , Camundongos
13.
Eur J Clin Microbiol Infect Dis ; 34(1): 177-186, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25109886

RESUMO

Influenza and meteorological factors have been associated with increases in the incidence of invasive pneumococcal disease (IPD). However, scant data regarding the impact of influenza and the environment on the clinical presentation of IPD are available. An observational study of all adults hospitalized with IPD was performed between 1996 and 2012 in our hospital. The incidence of IPD correlated with the incidence rates of influenza and with environmental data. A negative binominal regression was used to assess the relationship between these factors. Clinical presentation of IPD during the influenza and non-influenza periods was compared. During the study, 1,150 episodes of IPD were diagnosed. After adjusting for confounding variables, factors correlating with the rates of IPD were the incidence of influenza infection (IRR 1.229, 95% CI 1.025-1.472) and the average ambient temperature (IRR 0.921, 95% CI 0.88-0.964). Patients with IPD during the influenza period had a worse respiratory status. A greater proportion of patients had respiratory failure (45.6% vs 52%, p = 0.032) and higher requirements for ICU admission (19.3% vs 24.7%, p = 0.018) and mechanical ventilation (11% vs 15.1%, p = 0.038). When we stratified by invasiveness of pneumococcal serotypes and the presence of comorbid conditions, the increase in the severity of clinical presentation was focused on healthy adults with IPD caused by nonhighly invasive serotypes. Beyond the increase in the burden of IPD associated with influenza, a more severe clinical pattern of pneumococcal disease was observed in the influenza period. This effect varied according to pneumococcal serotype, host comorbidities, and age.


Assuntos
Clima , Influenza Humana/epidemiologia , Pneumonia Pneumocócica/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Cuidados Críticos/estatística & dados numéricos , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Pneumonia Pneumocócica/complicações , Pneumonia Pneumocócica/patologia , Insuficiência Respiratória/epidemiologia , Resultado do Tratamento
15.
J Environ Manage ; 155: 212-8, 2015 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-25837296

RESUMO

Air quality is a major issue for humans owing to the fact that the content of particles in the atmosphere has multiple implications for life quality, ecosystem dynamics and environment. Scientists are therefore particularly interested in discovering the origin of airborne particles. A new method has been developed to model the relationship between the emission surface and the total amount of airborne particles at a given distance, employing olive pollen and olive groves as examples. A third-degree polynomial relationship between the air particles at a particular point and the distance from the source was observed, signifying that the nearest area to a point is not that which is most correlated with its air features. This work allows the origin of airborne particles to be discovered and could be implemented in different disciplines related to atmospheric aerosol, thus providing a new approach with which to discover the dynamics of airborne particles.


Assuntos
Poluentes Atmosféricos/análise , Atmosfera/análise , Monitoramento Ambiental/métodos , Modelos Teóricos , Humanos , Olea , Pólen , Espanha , Análise Espaço-Temporal
16.
Mov Disord ; 29(2): 256-8, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24591171

RESUMO

BACKGROUND: Sydenham's chorea, a major manifestation of rheumatic fever, is characterized by chorea, behavioral changes, and cognitive dysfunction. Perfusion changes in the basal ganglia are the most frequent imaging findings observed in patients with Sydenham's chorea. METHODS: Twelve adult women with Sydenham's chorea in remission underwent brain single-photon emission computed tomography (SPECT). Their scans underwent a quantification process to evaluate the perfusion of Brodmann's areas of the frontal lobes and basal ganglia. The results were compared with the findings from a control group that was matched by age. RESULTS: A pattern of hyperperfusion in the left putamen was observed in the patient group (P = 0.02). No significant difference was observed in relation to other brain regions. CONCLUSIONS: The findings of brain SPECT suggest that perfusion abnormalities of the basal ganglia may persist even after the remission of abnormal movements in patients with Sydenham's chorea.


Assuntos
Encéfalo/diagnóstico por imagem , Encéfalo/patologia , Coreia/patologia , Tomografia Computadorizada de Emissão de Fóton Único , Adulto , Coreia/diagnóstico por imagem , Feminino , Humanos , Adulto Jovem
17.
Nat Genet ; 22(4): 394-9, 1999 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-10431247

RESUMO

LIM domains are required for both inhibitory effects on LIM homeodomain transcription factors and synergistic transcriptional activation events. The inhibitory actions of the LIM domain can often be overcome by the LIM co-regulator known as CLIM2, LDB1 and NLI (referred to hereafter as CLIM2; refs 2-4). The association of the CLIM cofactors with LIM domains does not, however, improve the DNA-binding ability of LIM homeodomain proteins, suggesting the action of a LIM-associated inhibitor factor. Here we present evidence that LIM domains are capable of binding a novel RING-H2 zinc-finger protein, Rlim (for RING finger LIM domain-binding protein), which acts as a negative co-regulator via the recruitment of the Sin3A/histone deacetylase corepressor complex. A corepressor function of RLIM is also suggested by in vivo studies of chick wing development. Overexpression of the gene Rnf12, encoding Rlim, results in phenotypes similar to those observed after inhibition of the LIM homeodomain factor LHX2, which is required for the formation of distal structures along the proximodistal axis, or by overexpression of dominant-negative CLIM1. We conclude that Rlim is a novel corepressor that recruits histone deacetylase-containing complexes to the LIM domain.


Assuntos
Histona Desacetilases/metabolismo , Proteínas de Homeodomínio/antagonistas & inibidores , Proteínas Repressoras/fisiologia , Fatores de Transcrição/antagonistas & inibidores , Sequência de Aminoácidos , Animais , Células COS , Embrião de Galinha , Extremidades/anatomia & histologia , Extremidades/embriologia , Regulação da Expressão Gênica no Desenvolvimento , Camundongos , Dados de Sequência Molecular , Proteínas Repressoras/análise , Homologia de Sequência de Aminoácidos , Fatores de Tempo , Distribuição Tecidual , Transfecção , Ubiquitina-Proteína Ligases
18.
Rehabilitacion (Madr) ; 57(1): 100732, 2023.
Artigo em Espanhol | MEDLINE | ID: mdl-35545482

RESUMO

INTRODUCTION: Physical activity is essential in the osteoarthritis population, however, confinement during the COVID pandemic forced lifestyle changes. An observational and descriptive study was conducted to assess physical exercise in people with degenerative osteoarticular disease (DOD) during the COVID-19 pandemic. MATERIAL AND METHODS: A telephone survey was conducted among people over 60 years of age with DOD previously treated at the Hospital Central de la Cruz Roja, assessing physical exercise during the COVID-19 pandemic confinement. The variables (time of physical exercise, causes if exercise was reduced, and pain intensity) were analysed and compared with the situation prior to home confinement. RESULTS: A total of 33 patients (8 men, 25 women) were included, with a mean age of 75.6 years. Polyarthrosis was the most frequent diagnosis. 51.5% performed the same amount of physical exercise, 21.21% performed more and 24.2% less than before. Only 6.1% performed more than 1 h a day of activity. 36.4% had more pain than previously. CONCLUSIONS: Although there is a high adherence to the exercises learned in the rehabilitation service, COVID-19 confinement has had a negative effect on the level of exercise performed by POD patients. It is advisable to encourage physical exercise during periods of lockdown.


Assuntos
COVID-19 , Osteoartrite , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Controle de Doenças Transmissíveis , Exercício Físico , Pandemias , SARS-CoV-2
19.
Stem Cells ; 29(8): 1186-95, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21681858

RESUMO

Gamete failure-derived infertility affects millions of people worldwide; for many patients, gamete donation by unrelated donors is the only available treatment. Embryonic stem cells (ESCs) can differentiate in vitro into germ-like cells, but they are genetically unrelated to the patient. Using an in vitro protocol that aims at recapitulating development, we have achieved, for the first time, complete differentiation of human induced pluripotent stem cells (hiPSCs) to postmeiotic cells. Unlike previous reports using human ESCs, postmeiotic cells arose without the over-expression of germline related transcription factors. Moreover, we consistently obtained haploid cells from hiPSCs of different origin (keratinocytes and cord blood), produced with a different number of transcription factors, and of both genetic sexes, suggesting the independence of our approach from the epigenetic memory of the reprogrammed somatic cells. Our work brings us closer to the production of personalized human gametes in vitro.


Assuntos
Células-Tronco Pluripotentes Induzidas/fisiologia , Meiose , 3-Hidroxiesteroide Desidrogenases/metabolismo , Proteínas Adaptadoras de Transdução de Sinal , Antígenos CD/metabolismo , Benzotiazóis/farmacologia , Técnicas de Cultura de Células , Proteínas de Ciclo Celular , Diferenciação Celular/efeitos dos fármacos , Linhagem Celular , Colforsina/farmacologia , RNA Helicases DEAD-box/genética , RNA Helicases DEAD-box/metabolismo , Metilação de DNA , Proteínas de Ligação a DNA , Fator 2 de Crescimento de Fibroblastos/farmacologia , Expressão Gênica , Regulação da Expressão Gênica , Histonas/metabolismo , Humanos , Células-Tronco Pluripotentes Induzidas/citologia , Células-Tronco Pluripotentes Induzidas/metabolismo , Proteínas de Filamentos Intermediários/metabolismo , Cariotipagem , Fator Inibidor de Leucemia/farmacologia , Masculino , Proteínas do Tecido Nervoso/metabolismo , Nestina , Proteínas Nucleares/metabolismo , Ploidias , Regiões Promotoras Genéticas , Proteínas/genética , Proteínas/metabolismo , Espermatogônias/citologia , Espermatogônias/metabolismo , Antígenos Embrionários Estágio-Específicos/metabolismo , Triazóis/farmacologia , Vimentina/metabolismo
20.
Artigo em Inglês | MEDLINE | ID: mdl-35869004

RESUMO

Opioid-free anaesthesia shows evidence about its efectivity and security, even though its risks and benefits are not well defined. Neither are the patient profile or sort of surgery where it could be superior to the conventional opioid-based anaesthetic technique. Aggressive and/or long-lasting surgeries set out several queries on this technique regarding sudden hemodynamic changes, as it does not produce sympatholysis through µ receptor and there is modest experience in this technique. A morbidly obese patient received open radical cystectomy with Bricker-type urinary diversion using infraumbilical incision under OFA protocol, maintaining an adequate hemodynamic stability and excellent analgesia in postoperatory care without using any intraoperative opioids. Opioid-free anaesthesia technique is developing its evidence. However, it is necessary to keep on researching its clinical applications, different drug combinations and solutions to its expected complications.


Assuntos
Anestesia , Obesidade Mórbida , Derivação Urinária , Analgésicos Opioides , Cistectomia/métodos , Humanos , Obesidade Mórbida/cirurgia , Derivação Urinária/métodos
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