Pic, 1934 is a poorly known species whose systematic position in the subfamily Chaulioganthinae is still controversial. In this paper we describe immature stages of
which were found inhabiting fallen ...bromeliads
in southeastern Brazilian Atlantic forest. Adults are redescribed, including the first study of male and female genitalia. Larva, pupa and adult are illustrated in detail and compared with other species of
Gorham, 1881 and
Hentz, 1830. We discuss the systematic position of
within Chauliognathinae on the basis of morphological comparison of its immature and adult characters. Both were found to be more similar to species of
than to
Pic, 1949, which supports the hypothesis of polyphyly of
. Aspects of the species biology and occasional association with bromeliads are discussed.
During development, the interconnected generation of various neural cell types within the cerebellar primordium is essential. Over embryonic (E) days E9−E13, Purkinje cells (PCs), and cerebellar ...nuclei (CN) neurons are among the created primordial neurons. The molecular and cellular mechanisms fundamental for the early cerebellar neurogenesis, migration/differentiation, and connectivity are not clear yet. Autophagy has a vital role in controlling cellular phenotypes, such as epithelial-to-mesenchymal transition (EMT) and endothelial to mesenchymal transition (EndMT). Transforming growth factor-beta 1 (TGF-β1) is the main player in pre-and postnatal development and controlling cellular morphological type via various mechanisms, such as autophagy. Thus, we hypothesized that TGF-β1 may regulate early cerebellar development by modifying the levels of cell adhesion molecules (CAMs) and consequently autophagy pathway in the mouse cerebellar primordium. We demonstrated the stimulation of the canonical TGF-β1 signaling pathway at the point that concurs with the generation of the nuclear transitory zone and PC plate in mice. Furthermore, our data show that the stimulated TGF-β1 signaling pathway progressively and chronologically could upregulate the expression of β-catenin (CTNNB1) and N-cadherin (CDH2) with the most expression at E11 and E12, leading to upregulation of chromodomain helicase DNA binding protein 8 (CDH8) and neural cell adhesion molecule 1 (NCAM1) expression, at E12 and E13. Finally, we demonstrated that the stimulated TGF-β signaling pathway may impede the autophagic flux at E11/E12. Nevertheless, basal autophagy flux happens at earlier developmental phases from E9−E10. Our study determined potential role of the TGF-β signaling and its regulatory impacts on autophagic flux during cerebellar development and cadherin expression, which can facilitate the proliferation, migration/differentiation, and placement of PCs and the CN neurons in their designated areas.
•
TGF-β1
regulates early cerebellar development by modifying the
cell adhesion molecules
and
autophagy flux
in the mouse cerebellar primordium.
•
TGF-β1 signaling upregulates the expression of β-catenin and N-cadherin at E11 and E12.
•
TGF-β signaling pathway
blocks the autophagic flux
at E11 and E12, however, it does not prevent basal autophagy at earlier developmental phases (E9-E10).
•
Cadherin expression can facilitate the proliferation, migration/differentiation, and placement of PCs and the CN neurons in their designated areas.
Brazilian Dioscoreaceas starches Hornung, Polyanna Silveira; do Prado Cordoba, Layse; da Silveira Lazzarotto, Simone Rosa ...
Journal of thermal analysis and calorimetry,
03/2017, Letnik:
127, Številka:
3
Journal Article
Recenzirano
Determination of the characteristics of native starches is crucial in order to select their best application in various industrial fields. Thus, two different types of non-traditional native starches ...from the
Dioscoreaceas
species (
Dioscorea
sp. and
Dioscorea piperifolia
Humb. var. Wild) were studied regarding their thermal, structural and rheological properties. The results were contrasted with traditional commercial starch sources (potato, cassava and corn). From the thermogravimetric results (TG/DTG),
D. piperifolia
starch obtained the highest thermal stability of the samples, except for potato starch. Furthermore, using differential scanning calorimetry and viscoamylograph profiles (RVA), it was found that the
Dioscoreaceas
starches presented a higher onset (
T
o
) temperature and susceptibility to retrogradation. They also showed lower values in relation to relative crystallinity, which was calculated from their X-ray patterns and tendency to white (
L
*) colour. The shapes of the
Discoreaceas
starch granules were determined using electron microscopy; it was found that as the potato starch the
Dioscoreaceas
starches showed a wide range of particle size.
A caracterização morfométrica de uma bacia hidrográfica se configura como uma técnica fundamental para a compreensão de seu regime hidrológico, subsidiando a gestão e planejamento dos recursos ...hídricos. Esse tipo de caracterização pode ser determinado pelo processamento de Modelos Digitais de Elevação (MDE) em um Sistema de Informações Geográficas (SIG). Dessa forma, o presente estudo teve como objetivo analisar as características morfométricas da bacia hidrográfica do rio Duas Unas, em Pernambuco, a partir de um MDE proveniente de perfilamento a laser aerotransportado (LiDAR). Esse tipo de dado espacial foi submetido a técnicas de pré-processamento, tais como reprojeção do seu sistema de referência de coordenadas para UTM (fuso 25S) e do seu sistema geodésico para SIRGAS 2000, bem como exclusão de seus pixels espúrios. Esses procedimentos possibilitaram a delimitação automática da bacia, a definição de sua rede hidrográfica e, consequentemente, a obtenção de seus parâmetros morfométricos. Pelos resultados foi constatado que a bacia do rio Duas Unas apresenta um formato alongado, compreende uma rede hidrográfica com um sistema de drenagem regular e seu canal principal tende a ser sinuoso e apresenta baixa declividade. A concepção dos resultados alcançados nesse estudo permite o entendimento do comportamento hidrológico da bacia de maneira consistente, podendo ser utilizados para um planejamento ambiental adequado.
Obesity is a major health risk factor associated with medical complications, such as cardiovascular disease, that may compromise outcomes. Furthermore, obesity may lead to difficulties in daily life, ...altering the quality of life and generating psychological disorders such as devalued self-image and depression.
This study evaluated the quality of life and predictive factors of postoperative complications in patients who underwent abdominoplasty after Roux-en-Y gastric bypass.
Bariatric and postbariatric center, North Wing Regional Hospital, Brasília, Brazil.
Data were analyzed from a prospective registry of postbariatric patients who underwent abdominoplasty from January 2011 to December 2016. Variables examined included age, sex, body mass index (BMI), complications, and comorbidities. Multivariate analyses were performed to assess outcome measures. The quality-of-life assessment was measured with the Moorehead-Ardelt quality-of-life questionnaire.
One hundred and seven postbariatric patients were included. The mean age of the patients was 41 years. BMI at the time of abdominoplasty (current BMI) was 27.6 ± 3.7 kg/m
, and the average weight loss before abdominoplasty was 47.7 ± 17.3 kg. Pre-weight loss BMI (max BMI) was 45.5 ± 7.6 kg/m
, and ∆BMI was 18.6 ± 9.3 kg/m
. The overall rate of complications was 23.4%. Among the studied factors in the multivariate analysis, amount of removed tissue in the abdomen >2000 g, ∆BMI >20 kg/m
, and age >40 years significantly increased the rates of postoperative complications. In our study, abdominoplasty improved the quality of life of patients (mean quality-of-life scores, 2.1 ± 0.9).
The amount of removed tissue in the abdomen, ∆BMI >20 kg/m
, and age >40 years led to significantly more complications in patients undergoing abdominoplasty after gastroplasty. In addition, this study demonstrated that abdominoplasty should be proposed to patients with massive weight loss to improve quality of life.
In this study, the combined and simultaneous actions of H.sub.2O.sub.2 and UV radiation on cassava starch granules were applied and the thermal, rheological, structural and colour properties were ...investigated. Samples of native cassava starch were oxidised with standard H.sub.2O.sub.2 solutions (0.1, 0.2 and 0.5 mol L.sup.-1) and exposed for 1 h under UV light (UVC radiation with lambda = 256 nm), with constant stirring. The solutions were subsequently filtered, washed, dried and analysed. The thermogravimetric curves showed similar behaviour, with three main mass losses and an increase in the thermal stability of each sample. The oxidative modification performed caused a strong decrease in the setback and final viscosity parameters (RVA), a gradual decrease in the gelatinisation enthalpy (DSC) and relative crystallinity (XRD) and significant differences in the average roughness of the granules (NC-AFM). The X-ray diffraction powder patterns displayed the "A" type for all the starch granules. The colour parameters showed a decrease in the -a* value (trend to green) for all the treated samples.
Among the richest ecosystems in bioluminescent Coleoptera in Brazil, the Cerrado (savannas) is the most threatened one by agricultural expansion. The Emas (PNE) and Chapada dos Guimarães (PNCG) ...National parks are 2 of the last main remnants of the original Cerrado ecosystems in Central-west Brazil. During the past 3 decades, we have conducted several expeditions to collect, observe and study bioluminescent beetles occurring in the PNE and surrounding farms. More recently we also started to investigate the PNCG. We recorded a total of 51 bioluminescent species, including fireflies (n = 29), click beetles (n = 11), phengodids (n = 10), and staphylinids (n = 1).The PNE region was the richest one, especially for phengodids (n = 9). Among the habitats that compose the Cerrado physiognomy, the Cerrado and cerradão hosted most of the bioluminescent species, followed by forest, open fields and marshes. Most fireflies inhabiting the Cerrado ecosystem emit yellow-green light, whereas most click beetles emit predominantly green light, and among phengodid species, orange and red-light emission was found in 3 species.The spectacular click beetle Pyrearinus termitilluminans Costa-lodging luminous termite mounds were found in PNE and also reported for the first time at PNCG. In the farms around the PNE, however, a declining number of bioluminescent species was recorded in cerradão areas after the replacement of the surrounding cattle pastures by sugarcane plantations, especially adult phengodid males that were no longer attracted to light traps. Habitat reduction, use of agricultural pesticides and artificial night lighting are thought to be the major causes of such impact on bioluminescent beetle diversity.
Yerba mate (
Ilex paraguariensis
) traditionally grown in South America. Its extract contains bioactive compounds which are associated with pharmacological activities. Freeze-concentration ...(cryoconcentration) process allows the removal of water preserving the bioactive compounds in extracts. Furthermore, yerba mate extract incorporation into starches is promising for food and pharmaceutical uses. This process can be evaluated using simultaneous Thermogravimetry and differential thermal analysis (TG–DTA). The aim of this study was to obtain corn starch incorporated with freeze-concentrated yerba mate extract. The evaluation of freeze-concentration was carried by extracts analyses of density, total dry matter and ash. The evaluation of yerba mate extract incorporation into corn starch was performed using simultaneous TG–DTA system. Density results revealed extracts different composition and dry matter indicated that compounds were concentrated at 0.576% ratio after freeze-concentration stage. Nevertheless, incorporated starches showed exothermic peaks in DTA curves at temperatures between 287 and 514 °C, which increased in intensity in agreement with freeze-concentration stages advance. Thus, yerba mate oxygenated compounds were incorporated into starches. Nutraceutical products can be obtained using the incorporation of yerba mate extract into starches; however, further studies are necessary to extend these applications.
Abstract
This study reviews the pertinent literature and summarizes water consumption indicators (CI) for hospitals. To facilitate comparison, two consistent metrics are highlighted, namely the ...annual water usage per bed (m3/bed/year) and per built area (m3/m2/year) for the different locations. Overall, the review reveals a wide variation among water consumption indicators. Hospitals in Italy have a reported use of 458 m3/bed/year, the highest indicator reported; the lowest CI among the reviewed articles was for German public hospitals at 103 m3/bed/year. Not surprisingly, higher water tariffs tend to reduce consumption, while higher per capita income increases consumption. Yet overall CI values tended to reflect a variety of causes, including activity level, laundry arrangements, water costs, the application of sustainable practices, environmental certification and other considerations. Given the high indicator values identified for Brazilian hospitals, future research might consider a more detailed study of how their water consumption might be better managed.
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