University Estadual Of Minas Gerais
University Estadual Of Minas Gerais
do Carmo J.M.,University of Mississippi Medical Center |
da Silva A.A.,University of Ribeirão Preto |
da Silva A.A.,University Estadual Of Minas Gerais |
Wang Z.,University of Mississippi Medical Center |
And 4 more authors.
Biochimica et Biophysica Acta - Molecular Basis of Disease | Year: 2017
Melanocortins play an important role in regulating blood pressure (BP) and sympathetic nervous system (SNS) activity as well as energy balance, glucose and other metabolic functions in humans and experimental animals. In experimental models of hypertension with high SNS activity, blockade of the melanocortin-4 receptor (MC4R) reduces BP despite causing marked hyperphagia and obesity. Activation of the central nervous system (CNS) pro-opiomelanocortin (POMC)-MC4R pathway appears to be an important link between obesity, SNS activation and hypertension. Despite having severe obesity, subjects with MC4R deficiency exhibit reductions in BP, heart rate, and urinary catecholamine excretion, as well as attenuated SNS responses to cold stimuli compared to obese subjects with normal MC4R function. In this review we discuss the importance of the brain POMC-MC4R system in regulating SNS activity and BP in obesity and other forms of hypertension. We also highlight potential mechanisms and brain circuitry by which the melanocortin system regulates cardiovascular function. © 2017 Elsevier B.V.
Matuk F.A.,Instituto Federal Of Minas Gerais |
Schaefer C.E.G.R.,Federal University of Viçosa |
Simas F.N.B.,Federal University of Viçosa |
Pereira T.T.C.,University Estadual Of Minas Gerais |
And 2 more authors.
Revista Brasileira de Ciencia do Solo | Year: 2017
Quilombolas are Afro-brazilian rural peasants who descended from escaped slaves who tried to carve out territories of autonomy (called Quilombos) by collective organization and resistance. Despite many anthropological and ethnopedological studies, little research has been carried out to identify the agricultural practices and the knowledge of people who live in the Quilombos (Quilombolas). Peasant communities who live from land resources have wide empirical knowledge related to local soils and landscapes. In this respect, ethnopedology focuses on their relationship with local practices, needs, and values. We carried out an ethnopedological evaluation of the soils, landscape and land suitability of the Malhada Grande Quilombola Territory, aiming to examine the local criteria involved in land-use decision making, and evaluate the legitimacy of local knowledge. For this purpose, participatory workshops allowed environmental stratification of the Quilombolas into landscape units, recognition of soil types, and evaluation of land-use criteria. This approach was combined with conventional soil sampling, description, and analysis. The Brazilian System of Soil Classification and its approximations to the WRB/FAO system and the SAAT land evaluation system were compared with the local classificatory systems, showing several convergences. The Quilombolas stratified the local environment into eight landscape units (based on soil, topography, and vegetation) and identified eight soil types with distinct morphological, chemical, and physical attributes. The conventional soil survey identified thirteen soil classes, in the same eight landscape units, organized as soil associations. The apparent contradictions between local knowledge and Pedology were relative since the classification systems were established based on different criteria, goals, and sampling references. Most soils are only suitable for pasture, with restricted agricultural use, due to water or oxygen deficiencies. The current land use was only inconsistent with the technical recommendations when socioecological constraints such as the semiarid climate, land availability, and economic conditions for land management led to overuse of the land. Local knowledge demonstrated its legitimacy and allowed a useful and fruitful exchange of information with the academic view of soil-landscape interplays. Although mostly unknown by the scientific community, local knowledge proved capable of achieving social welfare and food security. In addition, a participatory survey proved to be a core factor for more grounded and detailed data collection on how Quilombolas decide land use on a local scale. © 2017, Revista Brasileira de Ciencia do Solo. All rights reserved.
Junior O.G.D.S.,University Estadual Of Minas Gerais |
de Melo R.P.,Federal University of Minas Gerais |
Sales R.D.B.C.,University Estadual Of Minas Gerais |
Ayres E.,University Estadual Of Minas Gerais |
Patricio P.S.D.O.,Federal University of Minas Gerais
Journal of Building Engineering | Year: 2017
Nowadays, to develop products with lower impact without harming the environment. The aim of this work was to develop a polymer composite based in thermoplastic starch (TPS), maleate polyethylene (PE-g-MA) and curauá fiber in the proportion of 10%, 20% and 30 wt%. The resulting material was characterized by infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), tensile test, scanning electronic microscopy (SEM) and optical microscopy. The developed composite was applied on ceramic blocks and subjected to natural sunlight; its thermal behavior was monitored using infrared thermography. Thermography was effective for identifying temperature differences in samples of polymer composites with different percentages of fiber and allowed to monitor the thermal behavior. The results show that the manufactured composites have potential for use as thermal insulated building element. © 2017 Elsevier Ltd
Gomes R.F.,São Paulo State University |
Castoldi R.,University Estadual Of Minas Gerais |
Melo D.M.,University of Amazon |
Braz L.T.,São Paulo State University |
dos Santos D.M.M.,São Paulo State University
Revista Ceres | Year: 2017
One way of improving the quality and production of tomato is the adoption of appropriate techniques for crop management, especially the use of grafting and conduction method of the plants. However, in Brazil, there is a lack of information to encourage such practices. Therefore, this study aimed to evaluate the performance of rootstocks for tomato plants, with vigorous root system, conducted with four stems, in coconut fiber, under protected cultivation. The adopted spacing was 2.0 m between rows and 0.40 m between plants. For this, we used a randomized block design with four treatments and six replications. The treatments consisted of two rootstocks ("Maxifort" and "Multifort"), self-grafted ("Alambra" in "Alambra"), and ungrafted ("Alambra"). Each plot consisted of 20 plants, out of which the 14 central plants were evaluated. There was no significant effect on yield and fruit quality. In the assessment of nutritional status, there were no differences in the levels of P, Mg, and Ca in grafted plants. Therefore, the rootstocks Maxifort and Multifort, grown under conditions in which the experiment was conducted, did not increase the production and quality of fruits.
Demolinari M.S.M.,University Estadual Of Minas Gerais |
de Sousa R.N.,Federal University of Viçosa |
da Silva I.R.,Federal University of Viçosa |
Teixeira R.S.,Federal University of Viçosa |
And 2 more authors.
Revista Brasileira de Ciencia do Solo | Year: 2017
The amount of harvest residues retained in Eucalyptus plantations strongly influences soil organic matter (SOM), but the efficiency of conversion to SOM may vary according to the type of residue. This study evaluated the recovery of C from Eucalyptus residue components-leaves, bark, branches, roots, and a mix of all residues-in different SOM fractions with or without mineral-N supplementation (200 mg kg-1 of N). Variation in natural 13C abundance was used to trace the destination of residue-derived C in the soil. The C content of the light fraction (LF) and heavy fraction (HF) of SOM increased over a 240-days decomposition period in response to incorporation of Eucalyptus residues in the soil. Bark and leaf residues showed the best results. Bark residues increased the C content of the HF by 45 % over the initial condition. Leaf residues made the largest contribution to LF-C, increasing it by 8.6 times. Leaf residues also led to the highest N contents in the LF and HF, whereas branches, roots, and the mixture of residues caused significant net transfers of N from the HF. Mineral-N supplementation had no effect on stabilization of organic C in the HF of SOM, in which the C could be maintained for longer periods due to physical/colloidal protection against microbial decomposition. These results highlight the importance of keeping Eucalyptus harvest residues in the planted area, especially the bark, which is the most abundant harvest residue component under field conditions, for maintenance of SOM. © 2017, Revista Brasileira de Ciencia do Solo. All rights reserved.
Fonseca A.L.,University Estadual Of Minas Gerais |
Silva R.A.,University Estadual Of Minas Gerais |
Fux B.,Federal University of Espirito Santo |
Madureira A.P.,Federal University of Säo João del Rei |
And 2 more authors.
Revista da Sociedade Brasileira de Medicina Tropical | Year: 2012
Introduction: The aim of the present study was to analyze the exposure to risk factors for toxoplasmosis disease and the level of knowledge in pregnant women who were treated by the Public Health Care System (SUS) from October 2007 to September 2008 in Divinópolis City, Brazil. Methods: We analyzed 2,136 prenatal exams of pregnant women that were treated from October 2007 to September 2008. Results: Out of the 2,136 pregnant women evaluated, 200 answered a quantitative questionnaire; 49.5% were seropositive for immunoglobulin (Ig) G and 3.6% for IgM. Comparative analysis of congenital toxoplasmosis cases were evaluated in 11 regions and showed an irregular distribution (p < 0.01). This difference was also observed among the pregnant women observed in each location. The results from the questionnaire show that 93% of the pregnant women had no knowledge about toxoplasmosis, and 24% presented with positive serology, but no clinical manifestation. Analysis for pregnant IgG-positive women and the presence of pets showed a statistically significant correlation (p < 0.05), suggesting that the transmission of this disease might occur in the domestic environment. Conclusions: We suggest the implementation of a triage program for pregnant women and health education to encourage their use of SUS services.
Martins L.,Federal University of Minas Gerais |
Guimaraes R.E.S.,Federal University of Minas Gerais |
Becker H.M.G.,Federal University of Minas Gerais |
Bedran M.B.,University Hospital |
And 2 more authors.
Jornal de Pediatria | Year: 2011
Objective: To assess the prevalence of middle ear alterations in cystic fibrosis (CF) patients. Methods: In this descriptive study, 120 CF patients aged 5 months to 18 years were assessed by clinical history, otoscopy, and tympanometry. Data on P. aeruginosa colonization and parenteral and/or inhaled aminoglycoside use were also collected from medical charts. Results: Clinical history revealed absence of previous otitis media in 57% of patients. Tympanic membranes were normal in 94% of patients who underwent otoscopic evaluation; chronic otitis media was suggested in about 1% of the cases, otitis media with effusion (OME) in 2%, and Eustachian tube dysfunction in 3%. As for tympanometry, 91% of patients who underwent the exam showed normal results, OME was suggested in 2% of the cases, and Eustachian tube dysfunction in 7%. Conclusion: There was a low prevalence rate of middle ear alterations in our series of CF patients. The use of aminoglycosides and colonization by P. aeruginosa did not influence the prevalence of middle ear alterations. Our results suggest that a detailed clinical history and a routine otoscopy evaluation may confirm or rule out most middle ear alterations in CF patients. Copyright © 2011 by Sociedade Brasileira de Pediatria.
PubMed | University Estadual Of Minas Gerais and Federal University of Minas Gerais
Type: | Journal: The Journal of sports medicine and physical fitness | Year: 2017
The aim of this study was to verify the agreement of urine, body mass variations and plasma parameters to determine the hydration status of 14 male runners (29 4 years and 54.3 5.5 mLO2.kg-1.min-1) in an official 21.1 km road race.The mean dry-bulb temperature and air relative humidity during the road race were 25.1 2.1 C and 54.7 2.2%, respectively. The volume of water ingested by the runners was monitored using marked volumetric plastic bottles provided at the hydration stations located at 0, 2.5, 5.0, 7.5, 10.5, 14.0, 16.0 and 18.5 km from the starting line. Hydration status was assessed using urine specific gravity (USG), urine osmolality (UOSM) and plasma osmolality (POSM). Furthermore, body mass variation (BM) was assessed by comparing body mass (BM) immediately prior and after the race. Total sweat was estimated by BM, added water volume ingested and deducted blood volume collected. The sweat rate was calculated through total sweat and total exercise time.The mean water intake was 0.82 0.40 L, and the mean sweat rate and total sweating were 1440.11 182.13 mL.h-1 and 2.67 0.23 L. After the race, the BM reduced by 1.7 0.4 kg. The BM was - 2.41 0.47%, and the plasma volume variation was - 9.79 4.6 % between pre and post-running measurements. Despite the POSM increased post-race compared to pre-race, the UOSM and USG did not change. No significant correlations were found between POSM variation with UOSM variation (r = -0.08; p = 0.71), USG variation (r = -0.11; p = 0.78) or BM (r = 0.09; p = 0.77).In conclusion, this study shows that both BM and POSM indicated a hypohydration state after exercise even though the BM did not correlate significantly with POSM. These results demonstrate that BM is a practical method and can be sufficiently sensitive to evaluate the hydration state, but it should be utilized with caution.
Corgosinho P.H.C.,Bairro Universitario |
Corgosinho P.H.C.,University Estadual Of Minas Gerais
Journal of Natural History | Year: 2012
A new genus of Nannopodidae is described. Talpacoxa brandini gen. et sp. nov. is a typical sand-dwelling species with modified burrowing first legs. The new genus can be diagnosed by leg 1 transformed into a burrowing structure; coxa hypertrophied, longer than the exopod and the endopod, with a well-developed crista, downwardly extended, with a bifid tip; exopod one-segmented, strong, rectangular, ornamented with various cuneiform spinules; endopod two-segmented, second endopodal segment with two distal elements; intercoxal plate well developed, longer than the exopod and the endopod. Leg two to leg four reduced, with two-segmented exopod and one-segmented endopod; limbs laterally displaced with no trace of intercoxal plate. Leg five exopod one-segmented; intercoxal plate reduced. The new genus is tentatively included within Nannopodidae because of some putative synapomorphies shared with the genera Rosacletodes, Huntemannia, Laophontisochra and Acuticoxa. © 2012 Copyright Taylor and Francis Group, LLC.
de Nobile F.O.,Centro Universitario da Fundacao Educacional |
Galbiatti J.A.,São Paulo State University |
Muraishi R.I.,Fundacao Educacional |
Araujo J.R.,University Estadual Of Minas Gerais
Engenharia Agricola | Year: 2011
The agricultural use of organic and industrial residues is an alternative of exploitation with fertilization and source of organic matter to the soil. In this direction, the objective of this research was to evaluate the use of the urban solid waste and biofertilizer as nutrient source, and residue of the bauxite processing as agricultural liming materials of the soil for sugar cane (cane plant) and culture yields, irrigated with potable water and wastewater. For in such an experiment in vase was lead, under Alfisol soil, cultivated with the variety RB855536. It had been evaluated biometric variable of the plant such as: plant height, diameter of stem, tillering, leaf number, dry matter of the root and dry matter of the aerial part. The data showed that the quality of the irrigation water, potable and wastewater, did not influence the evaluated parameters. The application of urban solid waste and biofertilizer had consisted in an efficient source of nutrients for sugar cane plants, but is necessary to apply additional fertilizer for the attainment of stem production similar to the treatment with conventional mineral fertilization. Now the residue of the bauxite processing revealed efficient in the correction of the acidity presenting similar physical parameters to the treatment with mineral fertilization and lime, with exception of the dry matter of the root.