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Alders are nitrogen (N)-fixing riparian trees that promote leaf litter decomposition in streams through their high-nutrient leaf litter inputs. While alders are widespread across Europe, their populations are at risk due to infection by the oomycete Phytophthora ×alni, which causes alder dieback. Moreover, alder death opens a space for the establishment of an aggressive N-fixing invasive species, the black locust (Robinia pseudoacacia). Shifts from riparian vegetation containing healthy to infected alder and, eventually, alder loss and replacement with black locust may alter the key process of leaf litter decomposition and associated microbial decomposer assemblages. We examined this question in a microcosm experiment comparing three types of leaf litter mixtures: one representing an original riparian forest composed of healthy alder (Alnus lusitanica), ash (Fraxinus angustifolia), and poplar (Populus nigra); one with the same species composition where alder had been infected by P. ×alni; and one where alder had been replaced with black locust. The experiment lasted six weeks, and every two weeks, microbially driven decomposition, fungal biomass, reproduction, and assemblage structure were measured. Decomposition was highest in mixtures with infected alder and lowest in mixtures with black locust, reflecting differences in leaf nutrient concentrations. Mixtures with alder showed distinct fungal assemblages and higher sporulation rates than mixtures with black locust. Our results indicate that alder loss and its replacement with black locust may alter key stream ecosystem processes and assemblages, with important changes already occurring during alder infection. This highlights the importance of maintaining heathy riparian forests to preserve proper stream ecosystem functioning.
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Alnus , Ecossistema , Árvores , Rios/microbiologia , Biomassa , Nitrogênio , Folhas de Planta/microbiologia , Alnus/microbiologiaRESUMO
Salinity and excess zinc are two main problems that have limited agriculture in recent years. Aquaporins are crucial in regulating the passage of water and solutes through cells and may be essential for mitigating abiotic stresses. In the present study, the adaptive response to moderate salinity (60 mM NaCl) and excess Zn (1 mM ZnSO4 ) were compared alone and in combination in Cucumis sativus L. and Solanum lycopersicum L. Water relations, gas exchange and the differential expression of all aquaporins were analysed. The results showed that cucumber plants under salinity maintained the internal movement of water through osmotic adjustment and the overexpression of specific PIPs aquaporins, following a "conservation strategy". As tomato has a high tolerance to salinity, the physiological parameters and the expression of most aquaporins remained unchanged. ZnSO4 was shown to be stressful for both plant species. While cucumber upregulated 7 aquaporin isoforms, the expression of aquaporins increased in a generalized manner in tomato. Despite the differences, water relations and transpiration were adjusted in both plants, allowing the RWC in the shoot to be maintained. The aquaporin regulation in cucumber plants facing NaCl+ZnSO4 stress was similar in the two treatments containing NaCl, evidencing the predominance of salt in stress. However, in tomato, the induced expression of specific isoforms to deal with the combined stress differed from independent stresses. The results clarify the key role of aquaporin regulation in facing abiotic stresses and their possible use as markers of tolerance to salinity and heavy metals in plants.
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Aquaporinas , Cucumis sativus , Solanum lycopersicum , Aquaporinas/genética , Aquaporinas/metabolismo , Cucumis sativus/fisiologia , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Isoformas de Proteínas/metabolismo , Salinidade , Cloreto de Sódio/farmacologia , Cloreto de Sódio/metabolismo , Solanum lycopersicum/genética , Estresse Fisiológico , Água/metabolismo , Zinco/metabolismo , Sulfato de Zinco/química , Sulfato de Zinco/metabolismoRESUMO
Obstructive sleep apnea (OSA) is quite prevalent during pregnancy and is associated with adverse perinatal outcomes, but its potential influence on fetal development remains unclear. This study investigated maternal OSA impact on the fetus by analyzing gene expression profiles in whole cord blood (WCB). Ten women in the third trimester of pregnancy were included, five OSA and five non-OSA cases. WCB RNA expression was analyzed by microarray technology to identify differentially expressed genes (DEGs) under OSA conditions. After data normalization, 3238 genes showed significant differential expression under OSA conditions, with 2690 upregulated genes and 548 downregulated genes. Functional enrichment was conducted using gene set enrichment analysis (GSEA) applied to Gene Ontology annotations. Key biological processes involved in OSA were identified, including response to oxidative stress and hypoxia, apoptosis, insulin response and secretion, and placental development. Moreover, DEGs were confirmed through qPCR analyses in additional WCB samples (7 with OSA and 13 without OSA). This highlighted differential expression of several genes in OSA (EGR1, PFN1 and PRKAR1A), with distinct gene expression profiles observed during rapid eye movement (REM)-OSA in pregnancy (PFN1, UBA52, EGR1, STX4, MYC, JUNB, and MAPKAP). These findings suggest that OSA, particularly during REM sleep, may negatively impact various biological processes during fetal development.
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Sangue Fetal , Desenvolvimento Fetal , Apneia Obstrutiva do Sono , Humanos , Feminino , Gravidez , Sangue Fetal/metabolismo , Adulto , Apneia Obstrutiva do Sono/genética , Desenvolvimento Fetal/genética , Transcriptoma , Perfilação da Expressão Gênica , Complicações na Gravidez/genéticaRESUMO
We report a 62-year-old male, with history of uncontrolled hypertension (3 drugs) in who, it was found an incidentally left retroperitoneal hypervascular tumor (5.7 x 3.5 cm) in the CT. It was demonstrated contact between tumor and left renal artery and ureter, without regional lymphadenopathy. The patient was asymptomatic, but had increased of norepinephrine (1141.1 pg/mL), epinephrine (93.3 pg/mL) and serotonin blood levels (264.1 ïg/L). The MRI confirm the tumor, with serotonin affinity in the 68Galium-Edotreotide PET/CT (DOTATATE) but not in the MIBG/Scan. Therefore, a paraganglioma was the suspected diagnosis. Tumor board recommended excision, due to the risk of being a functional paraganglioma. The tumor was resected through laparoscopic approach after alpha-beta-adrenergic blockade. Postoperatively, hypertension and norepinephrine blood levels were normalized. The histological report surprisingly showed a Seminoma (positivity for PLAP, OCT ¾, c-kit, MDM2) and the surgical margins were free.
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INTRODUCTION: Although lung cancer screening is being implemented in the UK, there is uncertainty about the optimal invitation strategy. Here, we report participation in a community screening programme following a population-based invitation approach, examine factors associated with participation, and compare outcomes with hypothetical targeted invitations. METHODS: Letters were sent to all individuals (age 55-80) registered with a general practice (n=35 practices) in North and East Manchester, inviting ever-smokers to attend a Lung Health Check (LHC). Attendees at higher risk (PLCOm2012NoRace score≥1.5%) were offered two rounds of annual low-dose CT screening. Primary care recorded smoking codes (live and historical) were used to model hypothetical targeted invitation approaches for comparison. RESULTS: Letters were sent to 35 899 individuals, 71% from the most socioeconomically deprived quintile. Estimated response rate in ever-smokers was 49%; a lower response rate was associated with younger age, male sex, and primary care recorded current smoking status (adjOR 0.55 (95% CI 0.52 to 0.58), p<0.001). 83% of eligible respondents attended an LHC (n=8887/10 708). 51% were eligible for screening (n=4540/8887) of whom 98% had a baseline scan (n=4468/4540). Screening adherence was 83% (n=3488/4199) and lung cancer detection 3.2% (n=144) over 2 rounds. Modelled targeted approaches required 32%-48% fewer invitations, identified 94.6%-99.3% individuals eligible for screening, and included 97.1%-98.6% of screen-detected lung cancers. DISCUSSION: Using a population-based invitation strategy, in an area of high socioeconomic deprivation, is effective and may increase screening accessibility. Due to limitations in primary care records, targeted approaches should incorporate historical smoking codes and individuals with absent smoking records.
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Detecção Precoce de Câncer , Neoplasias Pulmonares , Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Neoplasias Pulmonares/diagnóstico por imagem , Neoplasias Pulmonares/epidemiologia , Fumantes , Fumar/epidemiologia , Programas de Rastreamento , Fatores SocioeconômicosRESUMO
We demonstrate coupling between the motions of two independently trapped ions with a separation distance of 620 µm. The ion-ion interaction is enhanced via a room-temperature electrically floating metallic wire which connects two surface traps. Tuning the motion of both ions into resonance, we show flow of energy with a coupling rate of 11 Hz. Quantum-coherent coupling is hindered by strong surface electric-field noise in our device. Our ion-wire-ion system demonstrates that room-temperature conductors can be used to mediate and tune interactions between independently trapped charges over distances beyond those achievable with free-space dipole-dipole coupling. This technology may be used to sympathetically cool or entangle remotely trapped charges and enable coupling between disparate physical systems.
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Amphibians are declining worldwide due to a combination of stressors such as climate change, invasive species, habitat loss, pollution and emergent diseases. Although their losses are likely to have important ecological consequences on the structure and functioning of freshwater ecosystems, this issue has been scarcely explored. We conducted an experiment in three montane streams-where primary production is the main source of energy and carbon-to assess the effects of amphibian disappearance (i.e. presence or absence of the common midwife toad Alytes obstetricans, a common species found in pools of these streams) on several aspects of ecosystem functioning and structure: periphyton biomass and chlorophyll a concentration, algal assemblage structure, and growth of macroinvertebrate grazers. We compared four types of experimental enclosures: (i) without macroinvertebrates or amphibians; (ii) with larvae of the caddisfly Allogamus laureatus; (iii) with A. obstetricans tadpoles; and (iv) with both A. laureatus larvae and A. obstetricans tadpoles. The absence of tadpoles increased periphyton biomass, but did not cause differences on inorganic sediment accrual. The algal assemblage had a higher diversity in the absence of tadpoles, and their characteristic taxa differed from the assemblages in presence of tadpoles. A. laureatus presented higher mass in presence of tadpoles; however, tadpole length was not affected by presence of macroinvertebrates. Our results suggest that presence of tadpoles is a driver of periphyton accrual and assemblage structure, acting as top-down control and with key potential consequences on the functioning of montane stream ecosystems.
La población de anfibios está reduciéndose globalmente debido a una combinación de factores como el cambio climático, las especies invasoras, la pérdida de hábitat, la contaminación y las enfermedades emergentes. Aunque su desaparición probablemente causará consecuencias ecológicas importantes en la estructura y el funcionamiento de los ecosistemas de agua dulce, es un aspecto que ha sido poco explorado. Se realizó un experimento en tres arroyos de montaña, donde la producción primaria es la principal fuente de energía y carbono, para determiner los efectos de la desaparición de los anfibios (presencia o ausencia del sapo partero común Alytes obstetricans, una especie común en pozas de estos arroyos) en varios aspectos del funcionamiento y la estructure del ecosistema: la biomasa de perifiton y la concentración de clorofila, la estructura de la comunidad algal y el crecimiento de los macroinvertebrados raspadores. Comparamos cuatro tipos de recintos: (i) sin macroinvertebrados ni anfibios; (ii) con larvas del tricóptero Allogamus laureatus; (iii) con renacuajos de A. obstetricans; y (iv) con tanto larvas de A. laureatus como renacuajos de A. obstetricans. La ausencia de renacuajos aumentaba la biomasa de perifiton, aunque no causaba diferencias en la acumulación de sedimento inorgánico. La comunidad de algas presentaba una mayor diversidad en ausencia de renacuajos, y sus taxones característicos eran distintos de los de las comunidades con presencia de renacuajos. A. laureatus tenía una mayor masa en presencia de renacuajos, pero la longitud de los renacuajos no se veía afectada por la presencia de macroinvertebrados. Nuestros resultados sugieren que la presencia de renacuajos controla la acumulación de perifiton y la estructura de las comunidades, ejerciendo un control de arriba hacia abajo, con consecuencias clave en el funcionamiento de los ecosistemas de arroyos de montaña.
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Perifíton , Rios , Animais , Ecossistema , Clorofila A/farmacologia , Insetos , Invertebrados , Anuros , LarvaRESUMO
INTRODUCTION: since Lauren classified gastric cancer into intestinal-type adenocarcinoma and diffuse gastric carcinoma back in 1965, countless categorizations have been published that attempt to elucidate the clinicopathological and prognostic differences between histological subtypes. OBJECTIVE: a retrospective study was performed of gastric cancer cases managed in a third-level site over ten years in order to compare subtypes between the most widely used classifications (Lauren and World Health Organization [WHO]). METHODS: a comparative study of the most relevant clinicopathological characteristics and a multivariate survival analysis were performed. RESULTS: significant differences exist between histological subtypes in terms of age, gender, location, extension, stage and treatment received. A univariate overall survival analysis revealed better survival rates for intestinal-type adenocarcinoma as compared to diffuse carcinoma (hazard ratio [HR]: 1.405 [1.024-1.927]) according to the Lauren's classification. Furthermore, there was a better prognosis of mucinous carcinoma (HR: 0.378 [0.164-0.868]), though failing to prove a poorer prognosis of poorly cohesive (HR: 1.242 [0.878-1.757]) and signet cell (HR: 1.354 [0.792-2.314]) carcinomas, according to the WHO classification. In the multivariate overall survival analysis, the following poor prognosis factors were identified: male gender, local infiltration (T), nodal invasion (N) and received adjuvant therapy. CONCLUSION: although the various histological subtypes show significant clinicopathological differences, further studies are needed to compare them and clarify the prognostic relevance of each one.
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Carcinoma , Neoplasias Gástricas , Humanos , Masculino , Prognóstico , Estudos Retrospectivos , Neoplasias Gástricas/terapia , Organização Mundial da SaúdeRESUMO
The Spanish Euthanasia Law introduces a new right that is added to the portfolio of services provided by the Spanish health system and whose application is guaranteed within a period of 40 days. From the perspective of clinical experience, it is argued that without the effective right to quality palliative care and given the current shortcomings in dependant care, this law may send a threatening message to particularly fragile and dependant individuals that will lead to them feeling like a burden to their families and society. It is reasoned that basing the right to die on the dignity of the individual may have unexpected social repercussions. The text of the law presents the flaws of having been written hastily and without the support of advisory entities. There are issues that require clarification with regard to the application of euthanasia within the context of general practice. The conclusion is that this new law will pose more problems of the type it aims to resolve.
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Eutanásia , Suicídio Assistido , Humanos , Cuidados PaliativosRESUMO
Fungicides can reach streams through runoff or adhered to leaf litter, and have the potential to adversely affect processes such as litter decomposition and associated communities. This study investigated the effects of chlorothalonil, a widely used fungicide, on litter decomposition, detritivorous invertebrates (larvae of the insect Sericostoma pyrenaicum) and aquatic hyphomycetes (AHs), using stream microcosms. We considered the single and combined effects of two exposure modes: waterborne fungicide (at two concentrations: 0.125 µg L-1 and 1.25 µg L-1) and litter previously sprayed with the fungicide (i.e., pre-treated litter, using the application dose concentration of 1250 µg L-1). We also assessed whether fungicide effects on invertebrates, AHs and decomposition varied among litter types (i.e., different plant species), and whether plant diversity mitigated any of those effects. Invertebrate survival and AH sporulation rate and taxon richness were strongly reduced by most combinations of fungicide exposure modes; however, invertebrates were not affected by the low waterborne concentration, whereas AHs suffered the highest reduction at this concentration. Total decomposition was slowed down by both exposure modes, and microbial decomposition was reduced by litter pre-treatment, while the waterborne fungicide had different effects depending on plant species. In general, with the exception of microbial decomposition, responses varied little among litter types. Moreover, and contrary to our expectation, plant diversity did not modulate the fungicide effects. Our results highlight the severity of fungicide inputs to streams through effects on invertebrate and microbial communities and ecosystem functioning, even in streams with well-preserved, diverse riparian vegetation.
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Fungicidas Industriais , Fungos Mitospóricos , Animais , Ecossistema , Insetos , Folhas de Planta , RiosRESUMO
OBJECTIVES: The aim of the JUST-ACT study was to assess whether the add-on effect of tocilizumab (TCZ) to background methotrexate (MTX) observed in MTX-inadequate responders with active rheumatoid arthritis (RA), would be sustained when MTX is withdrawn. METHODS: A double-blind, parallel-group, phase 3 study in biologic-naïve RA patients with a disease activity score 28 (DAS28)>3.2 despite MTX which were treated with TCZ+MTX for an initial 16-week period. Patients who at week 16 achieved low disease activity (LDA) (DAS28≤3.2) were randomised to continue with TCZ+MTX or switch to TCZ + placebo (PBO) for an additional 12 weeks. The primary endpoint was the change in DAS28-ESR from the randomisation at week 16 to week 28. Non-inferiority was confirmed if the upper limit of the two-sided 95%CI for the treatment difference between TCZ+MTX and TCZ monotherapy groups was lower than the selected non-inferiority margin of 0.6. RESULTS: 261 patients completed the first 16 weeks of TCZ+MTX treatment and 165 were randomised (83 to TCZ+MTX and 82 to TCZ+PBO). For the primary endpoint, the adjusted treatment difference (95% CI) in mean change of DAS28-ESR was -0.06 (-0.40 to 0.27), and therefore the non-inferiority of switching to TCZ monotherapy versus continuing with TCZ+MTX was demonstrated. In both treatment groups, the percentage of patients in clinical remission from 16 to 28 weeks was similar as were the improvements in disease activity, functional disability and quality of life. CONCLUSIONS: In MTX non-responder patients achieving LDA with TCZ+MTX, switching to TCZ monotherapy is non-inferior to continuing the combination.
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Anticorpos Monoclonais Humanizados/uso terapêutico , Antirreumáticos , Artrite Reumatoide , Metotrexato/uso terapêutico , Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Resultado do TratamentoRESUMO
AIMS: There is little information on the familial nature of dyslipidemias in the Spanish population. This knowledge could have potential diagnostic and treatment implications. The objective of the GALIPEMIAS study was to determine the prevalence of familial dyslipidemia in Galicia, as well as determine the degree of lipid control in the participants. Prevalence of atherosclerotic cardiovascular disease (ASCVD) was also estimated. This paper presents the design, methodology and selected preliminary results. METHODOLOGY: A cross-sectional study was performed in the population aged ≥18 years using cluster sampling and then random sampling. A sample of 1000 subjects was calculated and divided into three sequential phases with a specific methodology for each one. Phase I: selection of subjects from the general population and collection of informed consent documents; Phase II: collection of data from the digital clinical history to select subjects with dyslipidemia according to study criteria; Phase III: personal interview, blood analysis, family tree, and definitive diagnosis of dyslipidemia. Prevalence of different diseases and active medication was analysed. Corrected prevalence (to the reference population) of different risk factors and ASCVD was estimated. RESULTS: Phase I participation was 89.5%. We extracted complete information from 93% of the participants (Phase II). According to the study's own criteria, 56.5% (n = 527) of the participants had some form of dyslipidemia and almost 33.7% of them had familial dyslipidemia with autosomal dominant inherit pattern. The corrected prevalence of ASCVD was 5.1% (95% CI 3.1-7.2). CONCLUSIONS: Dyslipidemia was the most prevalent cardiovascular risk factor in our population with an autosomal dominant inheritance pattern in one out of every three dyslipidemia cases. Approximately, 5.1% of the sample population aged ≥18 has suffered an episode of ACVD.
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OBJECTIVES: To evaluate the safety and tolerability of the intravenous administration of Cx611, a preparation of allogeneic expanded adipose-derived stem cells (eASCs), in patients with refractory rheumatoid arthritis (RA), as well as to obtain preliminary clinical efficacy data in this population. METHODS: It is a multicentre, dose escalation, randomised, single-blind (double-blind for efficacy), placebo-controlled, phase Ib/IIa clinical trial. Patients with active refractory RA (failure to at least two biologicals) were randomised to receive three intravenous infusions of Cx611: 1 million/kg (cohort A), 2 million/kg (cohort B), 4 million/kg (cohort C) or placebo, on days 1, 8 and 15, and they were followed for therapy assessment for 24â weeks. RESULTS: Fifty-three patients were treated (20 in cohort A, 20 in cohort B, 6 in cohort C and 7 in placebo group). A total of 141 adverse events (AEs) were reported. Seventeen patients from the group A (85%), 15 from the group B (75%), 6 from the group C (100%) and 4 from the placebo group (57%) experienced at least one AE.Eight AEs from 6 patients were grade 3 in intensity (severe), 5 in cohort A (lacunar infarction, diarrhoea, tendon rupture, rheumatoid nodule and arthritis), 2 in cohort B (sciatica and RA) and 1 in the placebo group (asthenia). Only one of the grade 3 AEs was serious (the lacunar infarction). American College of Rheumatology 20 responses for cohorts A, B, C and placebo were 45%, 20%, 33% and 29%, respectively, at month 1, and 25%, 15%, 17% and 0%, respectively, at month 3. CONCLUSIONS: The intravenous infusion of Cx611 was in general well tolerated, without evidence of dose-related toxicity at the dose range and time period studied. In addition, a trend for clinical efficacy was observed. These data, in our opinion, justify further investigation of this innovative therapy in patients with RA. TRIAL REGISTRATION NUMBERS: EudraCT: 2010-021602-37; NCT01663116; Results.
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Artrite Reumatoide/terapia , Transplante de Células-Tronco Mesenquimais/métodos , Tecido Adiposo/citologia , Adulto , Idoso , Artrite Reumatoide/imunologia , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Feminino , Humanos , Infusões Intravenosas , Masculino , Transplante de Células-Tronco Mesenquimais/efeitos adversos , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Método Simples-Cego , Resultado do TratamentoRESUMO
BACKGROUND: The hemangiopericytoma is an uncommon vascular tumour. We report a case of interest because of its rarity, size and location. CASE REPORT: We present the case of a 63-year-old woman who consulted for abdominal pain. TAC, MRI and arteriography showed a pelvic mass occupying Douglas' space, displacing the uterus, bladder and sigma, with vascularisation relative to the inferior mesenteric artery and both hypogastric arteries. The vascularity of the tumour itself was selectively embolised before the mass was resected. There were no intra- or postoperative complications. Pathology confirmed the diagnosis of hemangiopericitoma. The patient is being monitored as an outpatient, with no signs of recurrence to date. DISCUSSION: The hemangiopericytoma is a tumour of the pericyte cells so it can occur in any location. The pelvic location is exceptional. The tumour may appear as nonspecific abdominal pain, show signs of compression of adjacent organs or occasionally be associated with paraneoplastic syndromes. The diagnosis is suspected via CT and angiography findings, but confirmation is only made by analysing the surgical specimen. The treatment of choice is surgery, in some cases after preoperative embolisation of the vascularisation of the mass. There is no agreement on chemo/radiotherapy as the primary treatment for hemangiopericytoma, although adjuvant radiation therapy has been found to improve local control and reduce recurrences. The prognosis is good if complete resection is achieved, with five- and 10-year survival rates between 70 and 80%, depending on the series.
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Hemangiopericitoma/patologia , Neoplasias Pélvicas/patologia , Feminino , Hemangiopericitoma/diagnóstico por imagem , Humanos , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Neoplasias Pélvicas/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Conduta ExpectanteRESUMO
BACKGROUND: The need for cosmetic results in our society and the necessity of an early recovery have promoted the development of minimally invasive techniques, including single-port approach. Some studies have tried to demonstrate the advantages of this access compared with conventional laparoscopic approach. This type of approach requires a high-cost multi-port device, so that some surgeons have tried to create a low-cost homemade device. MATERIALS AND METHODS: With this video we intend to show how to build a glove port, a low-cost alternative for the approach by a single port. CONCLUSIONS: A glove port is a cost effective approach that could be use instead of multi-port device.
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Luvas Cirúrgicas , Laparoscopia/instrumentação , Desenho de Equipamento , Humanos , Laparoscopia/métodosRESUMO
A gastrointestinal-renal kaliuretic signaling axis has been proposed to regulate potassium excretion in response to acute potassium ingestion independent of the extracellular potassium concentration and aldosterone. Here we studied this presumed axis in 32 individuals in our clinical pharmacology unit while on a 20 mmol sodium and 60 mmol potassium diet. The serum potassium concentration, potassium excretion, aldosterone, and insulin were measured following either a 35 mmol oral potassium load, a potassium- and sodium-deficient complex meal, or a potassium-deficient complex meal plus 35 mmol potassium. This design allowed determination of the component effects on potassium handling of the meal and potassium load separately. The meal plus potassium test was repeated following aldosterone blockade with eplerenone to specifically evaluate the role of aldosterone. In response to the potassium-deficient meal plus 35 mmol potassium, the serum potassium did not increase but the hourly mean potassium excretion increased sharply. This kaliuresis persisted following aldosterone blockade with eplerenone, further suggesting independence from aldosterone. Thus, a gastrointestinal-renal kaliuretic signaling axis exists in humans mediating potassium excretion independent of changes in the serum potassium concentration and aldosterone. The implication of this mechanism is yet to be determined but may account for a significant component of potassium excretion following a complex potassium-rich meal.
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Clinical pathways are care plans applicable to patient care procedures that present variations in practice and a predictable clinical course. They are designed not as a substitute for clinical judgment, but rather as a means to improve the effectiveness and efficiency of the procedures. This clinical pathway is the result of a collaborative work of the Sections of Endocrine Surgery and Quality Management of the Spanish Association of Surgeons. It attempts to provide a framework for standardizing the performance of thyroidectomy, the most frequently performed operation in endocrine surgery. Along with the usual documents of clinical pathways (temporary matrix, variance tracking and information sheets, assessment indicators and a satisfaction questionnaire) it includes a review of the scientific evidence around different aspects of pre, intra and postoperative management. Among others, antibiotic and antithrombotic prophylaxis, preoperative preparation in hyperthyroidism, intraoperative neuromonitoring and systems for obtaining hemostasis are included, along with management of postoperative hypocalcemia.
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Procedimentos Clínicos , Doenças da Glândula Tireoide/cirurgia , Tireoidectomia , Humanos , Guias de Prática Clínica como Assunto , Doenças da Glândula Tireoide/diagnóstico , Tireoidectomia/normasRESUMO
BACKGROUND: To determine whether there is greater employee satisfaction in organisations that have made more progress in implementation of the European Foundation for Quality Management (EFQM) model. METHODS: A series of cross-sectional studies (one for each assessment cycle) comparing staff satisfaction survey results between groups of healthcare organisations by degree of implementation of the EFQM model (assessed in terms of external recognition of management quality in each organisation). SETTING: 30 healthcare organisations including hospitals, primary care and mental health providers in Osakidetza, the Basque public health service. PARTICIPANTS: Employees of 30 Osakidetza organisations. INTERVENTION: Progress in implementation of EFQM model. MAIN OUTCOME MEASURES: Scores in 9 dimensions of employee satisfaction from questionnaires administered in healthcare organisations in 4 assessment cycles between 2001 and 2010. RESULTS: Comparing satisfaction results in organisations granted Gold or Silver Q Awards and those without this type of external recognition, we found statistically significant differences in the dimensions of training and internal communication. Then, comparing recipients of Gold Q Awards with those with no Q Certification, differences in leadership style and in policy and strategy also emerged as significant. CONCLUSIONS: Progress of healthcare organisations in the implementation of the EFQM Excellence Model is associated with increases in their employee satisfaction in dimensions that can be managed at the level of each organisation, while dimensions in which no statistically significant differences were found represent common organisational elements with little scope for self-management.
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Instalações de Saúde/normas , Satisfação no Emprego , Modelos Organizacionais , Gestão da Qualidade Total , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Espanha , Inquéritos e QuestionáriosRESUMO
This work outlines the first microwave (MW)-assisted protocol for the production of biofuel precursor furfural (FF) from the raw agricultural waste almond hull (AH), olive stone (OS), and the winemaking-derived grape stalk (GS), grape marc (GM) and exhausted grape marc (EGM) through a one-pot synthesis process. To enhance the overall yield, a catalytic process was firstly developed from xylose, major constituent of hemicellulose present in lignocellulosic biomass. This method afforded FF with 100 % selectivity, yielding over 85 % in isolated product when using H2SO4, as opposed to a 37 % yield with AlCl3·6H2O, at 150 °C in only 10 min. For both catalysts, the developed methodology was further validated, proving adaptable and efficient in producing the targeted FF from the aforementioned lignocellulosic raw materials. More specifically, the employment of AlCl3·6H2O resulted in the highest selectivity (up to 89 % from GM) and FF yield (42 % and 39 % molar from OS and AH, respectively), maintaining notable selectivity for the latter (61 and 48 % from AH and OS). At this regard, and considering the environmental factor of sustainability, it is important to point out the role of AlCl3·6H2O in contrast to H2SO4, thus mitigating detrimental substances. This study provides an important management of agricultural waste through sustainable practises for the development of potential bio-based chemicals, aligning with Green Chemistry and process intensification principles.