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1.
Occup Med (Lond) ; 74(1): 93-98, 2024 02 19.
Artigo em Inglês | MEDLINE | ID: mdl-38085666

RESUMO

BACKGROUND: Prior to any infectious disease emergence as a public health concern, early occupational preparedness is crucial for protecting employees from novel pathogens- coronavirus disease 2019 (COVID-19) is no different. AIMS: This study ascertains how occupational safety and health (OSH)/Human Resource (HR) professionals in the Republic of Ireland had managed to prepare their workplaces prior to the advent of COVID-19. METHODS: As part of a larger COVID-19 workplace study, online focus groups were conducted with OSH/HR professionals. Collected data were transcribed verbatim and entered into NVivo for thematic analysis incorporating intercoder reliability testing. RESULTS: Fifteen focus groups were conducted with OSH/HR professionals (n = 60) from various occupational settings. Three levels of organizational preparedness were identified: 'early awareness and preparation'; 'unaware and not ready' and 'aware, but not ready'. Most organizations were aware of the COVID-19 severity, but not fully prepared for the pandemic, especially stand-alone enterprises that may not have sufficient resources to cope with an unanticipated crisis. The experiences shared by OSH professionals illustrate their agility in applying risk management and control skills to unanticipated public/occupational health crises that arise. CONCLUSIONS: General pandemic preparedness such as the availability of work-from-home policies, emergency scenario planning and prior experience in workplace outbreaks of infectious diseases were helpful for workplace-associated COVID-19 prevention. This is the first study conducted with OSH/HR professionals in Ireland regarding COVID-19 preparedness in workplaces, which provides valuable insights into research literature, as well as empirical experience for the preparation of future public health emergencies.


Assuntos
COVID-19 , Saúde Ocupacional , Humanos , Preparação para Pandemia , Reprodutibilidade dos Testes , COVID-19/epidemiologia , COVID-19/prevenção & controle , Pessoal de Saúde
2.
Gynecol Oncol ; 177: 180-185, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37717346

RESUMO

OBJECTIVE: The goal of this practice statement is to help members and their multidisciplinary teams recognize infusion reactions and hypersensitivity reactions in the clinical setting. It will provide recommendations to help guide response to reactions and desensitization when appropriate, to promote safe use of chemotherapeutic agents among all providers in the delivery process. METHODS: A multi-disciplinary team of healthcare professionals from the Society of Gynecologic Oncology Education Committee collaborated to review peer reviewed literature and guidelines to develop a practice statement on the management of chemotherapy hypersensitivity reactions and desensitization regimens. RESULTS: There is always potential for a patient to have a reaction to any medication, with both infusion reactions and hypersensitivity reactions potentially occurring in the treatment of gynecologic cancers. Premedication to prevent reactions should be given at least prior to infusion for regimens that include the most common agents associated with reactions. At the time when reaction is occurring it might be difficult to distinguish between an infusion reaction versus true hypersensitivity given the similarities in signs and symptoms, therefore it is important that orders to manage reactions be included in every chemotherapy order set so the infusion nurse can provide immediate interventions while waiting for the provider to arrive to assess the patient. Desensitization is a potential option to allow the patient to continue to receive the offending agent. While a variety of desensitization regimens have been presented in the literature, the goal is to minimize steps and variability to decrease opportunity for errors during chemotherapy preparation or administration. CONCLUSION: Incorporating a review of the literature and clinical experience from the SGO Education Committee, this paper provides an overview of current approaches for prevention and management of reactions to commonly used chemotherapy agents for gynecologic cancers.

3.
Appl Opt ; 62(24): 6534-6541, 2023 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-37706848

RESUMO

In this work, we study multimodal interference filters with a graphite oxide coating. Use of the multimodal interference filter shows a distinctive peak in the signal spectrum, and when using the exfoliated graphite coated multimodal interference filter, the signal shows different spectral changes, such as the full width at half maximum of the curve, the maximum power, and central wavelength, which indicates that graphite oxide absorbs part of the energy. In addition, microscope observations when a He-Ne laser is passed through the filter confirm that graphite oxide is adhered to the filter.

4.
Surgeon ; 20(5): 309-313, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34483056

RESUMO

BACKGROUND: The aim of international health cooperation projects is to alleviate the deficiencies in the area of health in low resource settings. Hernia surgery is a procedure that is well suited to these missions, due to its low morbidity, the fact that it can be performed on an outpatient basis, and the improvement in quality of life that it provides. OBJECTIVE: To describe the results of Benefica Chirurgia (BC), a Spanish non-profit humanitarian association in hernia pathology. METHODS: Five one-week surgical campaigns were carried out in Ecuador between 2015 and 2019, involving anesthetists, general and pediatric surgeons. Surgical and medical equipment was provided and transported by BC. ASA I/II patients underwent surgery. RESULTS: Surgery was performed on 240 patients with hernia pathology on 27 days. Sixty-three per cent of patients were male and the mean age was 48.2 years (range: 1-83). Hernia location was inguinal in 113 patients, umbilical in 101, and other in 26. The anesthetic technique used was spinal in 185 patients (77.1%), local plus intravenous sedation in 31 (12.9%), and general in 24 (10%). The surgical technique used was hernioplasty in 191 patients, herniorrhaphy in 31, incisional hernia repair in 15 and herniotomy in three. Surgery was performed on an outpatient basis in 98.4% of cases. Morbidity was 2%. Long-term postoperative evaluation is very complex. CONCLUSION: These campaigns make a significant contribution to health in low resource settings and provide great personal satisfaction for those involved. Standards achieved in the immediate postoperative period were similar to those obtained at the surgeons' centers in Europe. However, it is difficult to establish the rates of recurrence and chronic pain.


Assuntos
Hérnia Inguinal , Cirurgiões , Criança , Feminino , Virilha , Hérnia Inguinal/cirurgia , Herniorrafia/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Recidiva , Telas Cirúrgicas
5.
BMC Pediatr ; 21(1): 246, 2021 05 21.
Artigo em Inglês | MEDLINE | ID: mdl-34020614

RESUMO

BACKGROUND: Childhood obesity represents a global public health crisis: the number of obese children and adolescents (aged 5-19 years) worldwide has risen tenfold in the past four decades. The vast majority of overweight and obese children live in high-income countries, and low socio-economic status (SES) is a significant risk factor. Family Based Interventions (FBI) have demonstrated positive results in preventing obesity, although these results are strongly influenced by SES. Moreover, we still poorly understand how FBI can determine a positive trend in weight status in low-income communities. Therefore, there is an urgent need to define and evaluate innovative and multi-target projects to reduce obesity risk behaviors and health inequalities and the present study aims to present the study protocol of FIVALIN a FBI that pretends to achieve this goal. METHODS: We will conduct a quasi-experimental design within 60 Community Child Centers (CCC) in Barcelona metropolitan area. Each cluster (CCC) will be assigned by convenience to the intervention and control groups. For the whole study, a total of 810 children aged 8-12 years and 600 parents will be recruited during 3 consecutive editions (1st - 2019/2020; 2nd - 2020/2021; 3rd - 2021/2022) of 10 months each. The action is a regular multicomponent health-promotion intervention targeting children, families, and CCC. All activities are based on the Motivational Interviewing (MI) approach and will focus on promoting good dietary habits, physical activity, appropriate screen time and sleep duration, and psychological well-being. The control group participate in a unique workshop on general awareness of healthy lifestyles for families. We will perform a comparative analysis of the evolution of weight status, healthy lifestyles, and socioeconomic variables, between the intervention and control groups. DISCUSSION: There is a need for more evidence on how to target and evaluate holistic interventions in low SES families. Our multi-targeting intervention for obesity prevention tackles risky behaviors that go beyond diet and physical activity (PA). Therefore, future interventions can effectively promote all the behavioral domains that determine trends in the weight status. TRIAL REGISTRATION: ISRCTN Registry: ISRCRN12682870 . Registered 9 July 2020. Retrospectively registered. Protocol version: 30 April 2021, version 5.


Assuntos
Obesidade Infantil , Adolescente , Adulto , Criança , Pré-Escolar , Exercício Físico , Promoção da Saúde , Humanos , Sobrepeso , Obesidade Infantil/prevenção & controle , Instituições Acadêmicas , Classe Social , Adulto Jovem
6.
Lupus ; 29(1): 27-36, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31801040

RESUMO

BACKGROUND: Systemic lupus erythematosus (SLE) is regarded as a prototype autoimmune disease because it can serve as a means for studying differences between ethnic minorities and sex. Traditionally, all Hispanics have been bracketed within the same ethnic group, but there are differences between Hispanics from Spain and those from Latin America, not to mention other Spanish-speaking populations. OBJECTIVES: This study aimed to determine the demographic and clinical characteristics, severity, activity, damage, mortality and co-morbidity of SLE in Hispanics belonging to the two ethnic groups resident in Spain, and to identify any differences. METHODS: This was an observational, multi-centre, retrospective study. The demographic and clinical variables of patients with SLE from 45 rheumatology units were collected. The study was conducted in accordance with Good Clinical Practice guidelines. Hispanic patients from the registry were divided into two groups: Spaniards or European Caucasians (EC) and Latin American mestizos (LAM). Comparative univariate and multivariate statistical analyses were carried out. RESULTS: A total of 3490 SLE patients were included, 90% of whom were female; 3305 (92%) EC and 185 (5%) LAM. LAM patients experienced their first lupus symptoms four years earlier than EC patients and were diagnosed and included in the registry younger, and their SLE was of a shorter duration. The time in months from the first SLE symptoms to diagnosis was longer in EC patients, as were the follow-up periods. LAM patients exhibited higher prevalence rates of myositis, haemolytic anaemia and nephritis, but there were no differences in histological type or serositis. Anti-Sm, anti-Ro and anti-RNP antibodies were more frequently found in LAM patients. LAM patients also had higher levels of disease activity, severity and hospital admissions. However, there were no differences in damage index, mortality or co-morbidity index. In the multivariate analysis, after adjusting for confounders, in several models the odds ratio (95% confidence interval) for a Katz severity index >3 in LAM patients was 1.45 (1.038-2.026; p = 0.02). This difference did not extend to activity levels (i.e. SLEDAI >3; 0.98 (0.30-1.66)). CONCLUSION: SLE in Hispanic EC patients showed clinical differences compared to Hispanic LAM patients. The latter more frequently suffered nephritis and higher severity indices. This study shows that where lupus is concerned, not all Hispanics are equal.


Assuntos
Progressão da Doença , Lúpus Eritematoso Sistêmico/etnologia , Feminino , Humanos , América Latina/etnologia , Lúpus Eritematoso Sistêmico/fisiopatologia , Masculino , Sistema de Registros , Estudos Retrospectivos , Índice de Gravidade de Doença , Espanha/epidemiologia , População Branca/estatística & dados numéricos
7.
Nature ; 507(7490): 90-3, 2014 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-24429523

RESUMO

Forests are major components of the global carbon cycle, providing substantial feedback to atmospheric greenhouse gas concentrations. Our ability to understand and predict changes in the forest carbon cycle--particularly net primary productivity and carbon storage--increasingly relies on models that represent biological processes across several scales of biological organization, from tree leaves to forest stands. Yet, despite advances in our understanding of productivity at the scales of leaves and stands, no consensus exists about the nature of productivity at the scale of the individual tree, in part because we lack a broad empirical assessment of whether rates of absolute tree mass growth (and thus carbon accumulation) decrease, remain constant, or increase as trees increase in size and age. Here we present a global analysis of 403 tropical and temperate tree species, showing that for most species mass growth rate increases continuously with tree size. Thus, large, old trees do not act simply as senescent carbon reservoirs but actively fix large amounts of carbon compared to smaller trees; at the extreme, a single big tree can add the same amount of carbon to the forest within a year as is contained in an entire mid-sized tree. The apparent paradoxes of individual tree growth increasing with tree size despite declining leaf-level and stand-level productivity can be explained, respectively, by increases in a tree's total leaf area that outpace declines in productivity per unit of leaf area and, among other factors, age-related reductions in population density. Our results resolve conflicting assumptions about the nature of tree growth, inform efforts to undertand and model forest carbon dynamics, and have additional implications for theories of resource allocation and plant senescence.


Assuntos
Tamanho Corporal , Ciclo do Carbono , Carbono/metabolismo , Árvores/anatomia & histologia , Árvores/metabolismo , Envelhecimento/metabolismo , Biomassa , Clima , Geografia , Modelos Biológicos , Folhas de Planta/crescimento & desenvolvimento , Folhas de Planta/metabolismo , Tamanho da Amostra , Especificidade da Espécie , Fatores de Tempo , Árvores/classificação , Árvores/crescimento & desenvolvimento , Clima Tropical
8.
Public Health ; 179: 135-146, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31812091

RESUMO

INTRODUCTION: Vending machines promote easy access to food with low nutritional value. 'Healthy' vending machines (HVM) have been introduced as a means to improve the availability and accessibility of healthy food options, and the healthiness of the foods, however, has not been evaluated. OBJECTIVE: Our aim was to assess the healthiness of the products offered in HVM and 'conventional' vending machines (CVM), located in the Catalan Institute of Oncology. STUDY DESIGN AND METHODS: All products available in vending machines (HVM (n = 33) and CVM (n = 62) were evaluate during three nutrient profile models (NPMs): the World Health Organization's European Regional Office model (WHO), Nutrient Profile Model UK (NPM-UK), and Australian Health Star Rating system (HSR). RESULTS: Regardless of the NPM used, significant differences found in the proportion of healthy products among HVM and CVM (WHO: P-value = 0.005, NPM-UK: P value < 0.001, HSR: P-value < 0.001). The healthy products offered in HVM accounted for 30%, 73%, and 52% of the total content, while CVM offered 6%, 32%, and 15% of the content, as assessed by WHO, NPM-UK, and HSR, respectively. The WHO model was the most restrictive model, and the NPM-UK was the most permissible one. CONCLUSIONS: Although not all products in HVM are rated as healthy by the different NPMs, the percentage of healthy products was significantly higher than those in CVM.


Assuntos
Distribuidores Automáticos de Alimentos/estatística & dados numéricos , Alimentos/estatística & dados numéricos , Hospitais , Valor Nutritivo , Humanos , Espanha
9.
Environ Geochem Health ; 42(11): 3717-3729, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32508002

RESUMO

The contribution of Hg from volcanic emanations is decisive for assessing global mercury emissions given the impact of this highly toxic contaminant on human health and ecosystems. Atmospheric Hg emissions from Popocatépetl volcano and their dispersion were evaluated carrying out two gaseous elemental mercury (GEM) surveys during a period of intense volcanic activity. Continuous GEM measurements were taken for 24 h using a portable mercury vapor analyzer (Lumex RA-915M) at the Altzomoni Atmospheric Observatory (AAO), 11 km from the crater. In addition, a long-distance survey to measure GEM was conducted during an automobile transect around the volcano, covering a distance of 129 km. The evaluation of the GEM data registered in the fixed location showed that heightened volcanic activity clearly intensifies the concentration of atmospheric Hg, extreme values around 5 ng m-3. Highest concentrations of GEM recorded during the mobile survey were about 10 ng m-3. In both surveys, the recorded concentrations during most of the measurement time were below 2 ng m-3, but measurements were taken at a considerable distance from the crater, and GEM is subject to dilution processes. During both surveys, recorded GEM did not exceed the 200 ng m-3 concentration recommended by the WHO (Air quality guidelines for Europe, 2000) as the regulatory limits for Hg in the atmospheric environment for long-term inhalation. Because this study was carried out in inhabited areas around the volcano during a period of intense volcanic activity, it can be concluded that the Popocatépetl does not represent a risk to human health in terms of Hg.


Assuntos
Poluentes Atmosféricos/análise , Mercúrio/análise , Erupções Vulcânicas , Poluentes Atmosféricos/toxicidade , Poluição do Ar , Exposição Ambiental , Monitoramento Ambiental , Humanos , Mercúrio/toxicidade , México , Saúde Pública , Erupções Vulcânicas/análise
10.
Med Oral Patol Oral Cir Bucal ; 25(1): e61-e70, 2020 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-31880291

RESUMO

BACKGROUND: Oral cancer associated with high risk (HPV-HR) human papilloma virus (HPV) has been increasing. HPV-HR has been associated with epithelial dysplasia, however, little information exists on its frequency in epithelial hyperplasia lesions. The aim of this study is to compare HPV genotypes in dysplastic and hyperplastic lesions of oral cavity. MATERIAL AND METHODS: Two hundred and fifty oral lesions: 131 dysplasia and 119 hyperplasia from two regions of Colombia were evaluated. One hundred seventy-four coming from urban area and 104 from a high risk population to oral cancer from a rural area. HPV was identified by qPCR and Twenty-four HPVs genotypes were evaluated by Luminex® technology. Logistic regressions were performed to establish the associations between HPV infections with oral dysplasia. RESULTS: Twenty-eight percent (70/250) of the samples were positives for any HPV and HPV-HRs were more frequently than low risk HPVs. HPV-16 was the most detected genotype (16%) followed by HPV-31, 53, 18 and 45. HPV, HPV-HRs and HPV-16 were only associated with dysplasia in urban area; OR 3.28 (CI 95% 1.49-7.17), OR 7.94 (CI 95% 2.97-21.2) and OR 5.90 (CI 95% 2.05-17). Individuals in rural area showed more HPV and HPV-HRs infection in hyperplasic lesions than urban population. The majority of HPV+ lesions had multi-type of HPV (52/70) and the urban individuals showed more genotypes than rural population. CONCLUSIONS: HPV-.HRs are frequently found in hyperplastic and dysplastic epithelial lesions. HPV-HRs and HPV-16 were associated with dysplasia in urban population. Rural high risk population and urban population differ in the frequency and variety of HPV genotypes.


Assuntos
Papillomaviridae , Infecções por Papillomavirus , Genótipo , Humanos , Hiperplasia
11.
Rev Clin Esp ; 220(8): 511-517, 2020 Nov.
Artigo em Espanhol | MEDLINE | ID: mdl-38620641

RESUMO

SARS-CoV-2 infection is associated with a high risk of malnutrition, mainly due to increased nutritional requirements and the presence of a severe and universal inflammatory state. Associated symptoms contribute to hyporexia, which perpetuates the negative nutritional balance. Furthermore, dysphagia, especially post-intubation, worsens and makes intake unsafe. This risk is greater in elderly and multimorbid patients. Inflammation to varying degrees is the common link between COVID-19 and the onset of malnutrition, and it is more correct to refer to disease-related malnutrition (DRM). DRM worsens the poor prognosis of SARS-CoV-2 infection, especially in the most severe cases. Therefore, it is necessary to identify and treat people at risk early, avoiding overexposure and direct contact with the patient. We cannot forget the role that a healthy diet plays in both prevention and recovery after discharge.

12.
BMC Genomics ; 20(1): 452, 2019 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-31159741

RESUMO

BACKGROUND: Full RNA-Seq is a fundamental research tool for whole transcriptome analysis. However, it is too costly and time consuming to be used in routine clinical practice. We evaluated the transcript quantification agreement between RNA-Seq and a digital multiplexed gene expression platform, and the subtype call after running the PAM50 assay in a series of breast cancer patients classified as triple negative by IHC/FISH. The goal of this study is to analyze the concordance between both expression platforms overall, and for calling PAM50 triple negative breast cancer intrinsic subtypes in particular. RESULTS: The analyses were performed in paraffin-embedded tissues from 96 patients recruited in a multicenter, prospective, non-randomized neoadjuvant triple negative breast cancer trial (NCT01560663). Pre-treatment core biopsies were obtained following clinical practice guidelines and conserved as FFPE for further RNA extraction. PAM50 was performed on both digital multiplexed gene expression and RNA-Seq platforms. Subtype assignment was based on the nearest centroid classification following this procedure for both platforms and it was concordant on 96% of the cases (N = 96). In four cases, digital multiplexed gene expression analysis and RNA-Seq were discordant. The Spearman correlation to each of the centroids and the risk of recurrence were above 0.89 in both platforms while the agreement on Proliferation Score reached up to 0.97. In addition, 82% of the individual PAM50 genes showed a correlation coefficient > 0.80. CONCLUSIONS: In our analysis, the subtype calling in most of the samples was concordant in both platforms and the potential discordances had reduced clinical implications in terms of prognosis. If speed and cost are the main driving forces then the preferred technique is the digital multiplexed platform, while if whole genome patterns and subtype are the driving forces, then RNA-Seq is the preferred method.


Assuntos
Biomarcadores Tumorais/genética , Perfilação da Expressão Gênica/métodos , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Recidiva Local de Neoplasia/genética , Neoplasias de Mama Triplo Negativas/genética , Feminino , Seguimentos , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , Recidiva Local de Neoplasia/patologia , Prognóstico , Estudos Prospectivos , Neoplasias de Mama Triplo Negativas/patologia
13.
J Neural Transm (Vienna) ; 126(1): 95-99, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-29728861

RESUMO

Clinical utility of commercial multi-gene pharmacogenetic tests in depression is starting to be studied with some promising results on efficacy and tolerability. Among the next steps is the definition of the patient profile that is most likely to benefit from testing. Here we present a reanalysis of data from the AB-GEN randomized clinical trial showing that clinical utility of pharmacogenetic testing can be markedly influenced by patient characteristics such as age, baseline severity and duration of current depressive episode.Trial registration ClinicalTrials.gov NCT02529462.


Assuntos
Antidepressivos/uso terapêutico , Transtorno Depressivo Maior/tratamento farmacológico , Avaliação de Resultados em Cuidados de Saúde , Testes Farmacogenômicos/normas , Adulto , Fatores Etários , Idoso , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Método Simples-Cego , Fatores de Tempo
14.
Cardiovasc Drugs Ther ; 33(4): 415-424, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31209632

RESUMO

PURPOSE: Recent advances in genomics offer a smart option for predicting future risk of disease and prognosis. The objective of this study was to examine the prognostic value in heart failure (HF) patients, of a series of single nucleotide polymorphisms (SNPs). METHODS: A selection of 192 SNPs found to be related with obesity, body mass index, circulating lipids or cardiovascular diseases were genotyped in 191 patients with HF. Anthropometrical and clinical variables were collected for each patient, and death and readmission by HF were registered as the primary endpoint. RESULTS: A total of 53 events were registered during a follow-up period of 438 (263-1077) days (median (IQR)). Eight SNPs strongly related to obesity and HF prognosis were selected as possible prognostic variables. From these, rs10189761 and rs737337 variants were independently associated with HF prognosis (HR 2.295 (1.287-4.089, 95% CI); p = 0.005), whereas rs10423928, rs1800437, rs737337 and rs9351814 were related with bad prognosis only in obese patients (HR 2.142 (1.438-3.192, 95% CI); p = 0.00018). Combined scores of the genomic variants were highly predictive of poor prognosis. CONCLUSIONS: SNPs rs10189761 and rs737337 were identified, for the first time, as independent predictors of major clinical outcomes in patients with HF. The data suggests an additive predictive value of these SNPs for a HF prognosis. In particular for obese patients, SNPs rs10423928, rs1800437, rs737337 and rs9351814 were related with a bad prognosis. Combined scores weighting the risk of each genomic variant could effect interesting new tools to stratify the prognostic risk of HF patients.


Assuntos
Insuficiência Cardíaca/genética , Obesidade/genética , Polimorfismo de Nucleotídeo Único , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Índice de Massa Corporal , Progressão da Doença , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/fisiopatologia , Humanos , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Obesidade/mortalidade , Obesidade/fisiopatologia , Fenótipo , Prognóstico , Medição de Risco , Fatores de Risco , Fatores de Tempo
15.
J Nanobiotechnology ; 17(1): 106, 2019 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-31615570

RESUMO

BACKGROUND: Improving the water solubility of hydrophobic drugs, increasing their accumulation in tumor tissue and allowing their simultaneous action by different pathways are essential issues for a successful chemotherapeutic activity in cancer treatment. Considering potential clinical application in the future, it will be promising to achieve such purposes by developing new biocompatible hybrid nanocarriers with multimodal therapeutic activity. RESULTS: We designed and characterised a hybrid nanocarrier based on human serum albumin/chitosan nanoparticles (HSA/chitosan NPs) able to encapsulate free docetaxel (DTX) and doxorubicin-modified gold nanorods (DOXO-GNRs) to simultaneously exploit the complementary chemotherapeutic activities of both antineoplasic compounds together with the plasmonic optical properties of the embedded GNRs for plasmonic-based photothermal therapy (PPTT). DOXO was assembled onto GNR surfaces following a layer-by-layer (LbL) coating strategy, which allowed to partially control its release quasi-independently release regarding DTX under the use of near infrared (NIR)-light laser stimulation of GNRs. In vitro cytotoxicity experiments using triple negative breast MDA-MB-231 cancer cells showed that the developed dual drug encapsulation approach produces a strong synergistic toxic effect to tumoral cells compared to the administration of the combined free drugs; additionally, PPTT enhances the cytostatic efficacy allowing cell toxicities close to 90% after a single low irradiation dose and keeping apoptosis as the main cell death mechanism. CONCLUSIONS: This work demonstrates that by means of a rational design, a single hybrid nanoconstruct can simultaneously supply complementary therapeutic strategies to treat tumors and, in particular, metastatic breast cancers with good results making use of its stimuli-responsiveness as well as its inherent physico-chemical properties.


Assuntos
Antineoplásicos/administração & dosagem , Docetaxel/administração & dosagem , Doxorrubicina/administração & dosagem , Nanocápsulas/química , Albumina Sérica Humana/química , Neoplasias de Mama Triplo Negativas/terapia , Antineoplásicos/farmacologia , Linhagem Celular Tumoral , Preparações de Ação Retardada/química , Docetaxel/farmacologia , Doxorrubicina/farmacologia , Ouro/química , Humanos , Hipertermia Induzida , Luz , Nanotubos/química , Fotoquimioterapia , Fototerapia
16.
Am J Physiol Heart Circ Physiol ; 314(2): H370-H379, 2018 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-29127239

RESUMO

The small size of the mouse heart frequently imparts technical challenges when applying conventional in vivo imaging methods for assessing heart function. Here, we describe the use of high-frequency ultrasound imaging in conjunction with a size-tuned blood pool contrast agent for quantitatively assessing myocardial perfusion in living mice. A perflurocarbon microbubble formulation exhibiting a narrow size distribution was developed, and echogenicity was assessed at 18 MHz in vitro. Adult mice were subjected to permanent ligation of the left anterior descending artery. Ultrasound imaging was performed on day 7, and a cohort of intact mice was used as a control. Parasternal long-axis cine clips were acquired at 18 MHz before and after contrast administration. Reduced ejection fraction and increased end-systolic volume were observed in infarcted compared with control mice. In control animals, washin of the contrast agent was visible in all myocardial segments. Reduced contrast enhancement was observed in apical-posterolateral regions of all infarcted mice. A novel method for reslicing of the imaging data through the time domain provided a two-dimensional presentation of regional contrast agent washin, enabling convenient identification of locations exhibiting altered perfusion. Myocardial segments exhibiting diminished contractility were observed to have correspondingly low relative myocardial perfusion. The contrast agent formulation and methods demonstrated here provide the basis for simplifying routine in vivo estimation of infarct size in mice and may be particularly useful in longitudinal evaluation of revascularization interventions and assessment of peri-infarct ischemia. NEW & NOTEWORTHY Murine myocardial contrast echocardiography frequently suffers from poor sensitivity to contrast. Here, we formulated a novel size-tuned microbubble contrast agent and validated it for use with ultra-high-frequency ultrasound. A novel data method for evaluating myocardial perfusion based on reslicing the imaging data through the time domain is presented.


Assuntos
Meios de Contraste/administração & dosagem , Ecocardiografia/métodos , Infarto do Miocárdio/diagnóstico por imagem , Imagem de Perfusão do Miocárdio/métodos , Animais , Circulação Coronária , Modelos Animais de Doenças , Interpretação de Imagem Assistida por Computador , Masculino , Camundongos Endogâmicos C57BL , Microbolhas , Contração Miocárdica , Infarto do Miocárdio/fisiopatologia , Valor Preditivo dos Testes , Reprodutibilidade dos Testes , Fatores de Tempo
17.
J Viral Hepat ; 25(6): 699-706, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29377515

RESUMO

Little data are available on renal toxicity exerted by direct-acting antivirals (DAAs) in real life. The aim of this study was to assess the impact of direct-acting antivirals against hepatitis C virus infection currently used in Spain and Portugal on the estimated glomerular filtration rate (eGFR) in clinical practise. From an international, prospective multicohort study, patients treated with DAAs for at least 12 weeks and with eGFR ≥30 mL/min per 1.73 m2 at baseline were selected. eGFR was determined using the CKD-EPI formula. A total of 1131 patients were included; 658 (58%) were HIV/HCV-coinfected patients. Among the 901 patients treated for 12 weeks, median (interquartile range) eGFR was 100 (87-107) at baseline vs 97 (85-105) mL/min per 1.73 m2 at week 12 of follow-up (FU12) post-treatment (P < .001). For HIV-coinfected subjects who received tenofovir plus a ritonavir-boosted HIV protease inhibitor (PI/r), baseline vs FU12 eGFR were 104 (86-109) vs 104 (91-110) mL/min per 1.73 m2 (P = .913). Among subjects receiving ombitasvir/paritaprevir with or without dasabuvir, eGFR did not show any significant change. Of 1100 subjects with eGFR >60 mL/min per 1.73 m2 at baseline, 22 (2%) had eGFR <60 mL/min per 1.73 m2 at FU12, but none presented with eGFR <30 mL/min per 1.73 m2 . In conclusion, eGFR slightly declines during therapy with all-oral DAAs and this effect persists up to 12 weeks after stopping treatment in subjects with normal to moderately impaired renal function, regardless of HIV status. Concomitant use of tenofovir plus PI/r does not seem to have an impact on eGFR.


Assuntos
Antivirais/administração & dosagem , Antivirais/efeitos adversos , Taxa de Filtração Glomerular , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , 2-Naftilamina , Anilidas/administração & dosagem , Anilidas/efeitos adversos , Carbamatos/administração & dosagem , Carbamatos/efeitos adversos , Ciclopropanos , Feminino , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Humanos , Lactamas Macrocíclicas , Compostos Macrocíclicos/administração & dosagem , Compostos Macrocíclicos/efeitos adversos , Masculino , Pessoa de Meia-Idade , Portugal , Prolina/análogos & derivados , Estudos Prospectivos , Estudos Retrospectivos , Espanha , Sulfonamidas/administração & dosagem , Sulfonamidas/efeitos adversos , Resultado do Tratamento , Uracila/administração & dosagem , Uracila/efeitos adversos , Uracila/análogos & derivados , Valina
18.
Clin Exp Dermatol ; 43(8): 876-882, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29756221

RESUMO

BACKGROUND: Cutaneous squamous cell carcinoma (cSCC) represents the most common form of skin cancer after basal cell carcinoma, and can be both locally invasive and metastatic to distant sites. Growth rate (GR) has been poorly evaluated in cSCC, despite clinical evidence suggesting that GR is an important risk factor in cSCC. AIM: To analyse the influence of GR in cSCC prognosis. METHODS: We retrospectively evaluated GR in a series of 90 cSCCs and tried to correlate GR with prognosis in cSCC. RESULTS: We demonstrated that tumours with a GR of > 4 mm/month exhibit a higher risk of nodal progression and a shorter progression time to lymph node metastasis in cSCC than those with GR of < 4 mm/month. As expected, GR correlated with tumour proliferation, as determined by Ki-67 expression. CONCLUSIONS: We consider a GR of 4 mm/month as the cutoff point that distinguishes between rapid- and slow-progressing tumours and, more importantly, to identify a subset of high-risk cSCCs.


Assuntos
Carcinoma de Células Escamosas/patologia , Progressão da Doença , Neoplasias Cutâneas/patologia , Idoso , Idoso de 80 Anos ou mais , Antígenos de Superfície/metabolismo , Feminino , Humanos , Modelos Logísticos , Metástase Linfática , Masculino , Prognóstico , Estudos Retrospectivos , Fatores de Risco
19.
Int Orthop ; 42(1): 39, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29164288

RESUMO

There is an error in the name of one of the author in the original publication. The correct name is I Rodríguez-Delourme and not Delourne.

20.
Int Orthop ; 42(1): 33-38, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29075808

RESUMO

PURPOSE: This work seeks to verify the utility of the KLIC score as a predictor of treatment success or failure in patients with knee and hip acute prosthetic joint infections (APJI). These patients were treated in our centre, which is not a prosthetic joint infection reference centre. The KLIC score assesses factors such as chronic kidney failure (2 points) (Kidney), liver disease (1.5 points) (Liver), revision surgery or femoral neck fracture (1.5 points)and cemented prosthesis (2 points) (Index surgery) and a C-reactive protein level (CRP) greater than 11.5 mg/dL (2.5 points), as a predictor of treatment success or failure in patients with knee and hip acute prosthetic joint infections (APJI). METHODS: We retrospectively reviewed 30 patients with APJI who were treated using debridement, antibiotics, irrigation and retention (DAIR) treatment between January 2007 and December 2016. Patients' KLIC scores were calculated. The main outcome was success or failure of DAIR treatment of APJI. RESULTS: DAIR treatment succeeded in 21 cases and failed in nine cases. Differences in outcome were found according to the KLIC score. For KLIC scores >2 and ≤4, there were three successes and zero failures; for scores 4-5, there were nine successes and two failures; for scores >5 and ≤7,there were nine successes and four failures; and for scores >7, there were zero successes and three failures (p = 0.025). We found a positive predictive value and negative predictive value of 33% and 100% for scores ≤4 (score for calculations: 3.5), 43% and 84% for scores 4-5 (4.5), 50% and 68% for scores >5 and ≤7 (5.5), and 100% and 76% for scores >7 (7.5), respectively. The area under the ROC curve was 0.762 (95% confidence interval, 0.569-0.955). CONCLUSIONS: The KLIC score was useful in predicting success or failure of DAIR treatment of APJI. This supports the conclusion that with a score < 3.5, treatment is likely to succeed and with a score of >6, it is likely to fail.


Assuntos
Antibacterianos/uso terapêutico , Desbridamento/métodos , Infecções Relacionadas à Prótese/terapia , Irrigação Terapêutica/métodos , Idoso , Idoso de 80 Anos ou mais , Artroplastia/efeitos adversos , Proteína C-Reativa/análise , Feminino , Articulação do Quadril/cirurgia , Humanos , Prótese Articular/efeitos adversos , Rim/patologia , Articulação do Joelho/cirurgia , Fígado/patologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Falha de Tratamento , Resultado do Tratamento
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