47 research outputs found

    UMA ANÁLISE NAS EMISSÕES DE GASES DO EFEITO ESTUFA EM PROCESSOS DA CADEIA AVÍCOLA

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    Este trabalho teve por objetivo elaborar o inventário de gases de efeito estufa dentro de três unidades da cadeia avícola, sendo uma fabricação de ração, incubação de ovos e frigorífico, dos anos de 2016 e 2017. O levantamento de dados gerou informações que foram lançadas na Ferramenta GHG Protocol. Na montagem dos inventários, as informações foram utilizadas nos Escopo 1 e 2 de gestão interna direta da empresa e Escopo 3 de gestão indireta da empresa. O escopo que mais gerou emissões de GEE foi o Escopo 3 em função do volume de transporte rodoviário característico na avicultura, seguido pelo Escopo 2 e Escopo 1.  Na avaliação geral, os volumes de emissões na fábrica de rações foram de 858.118,75 t em 2016 e 810.408,10 t em 2017. No incubatório, as emissões foram de 2.775.610,17 t em 2016 e 3.437.118, 10 t em 2017, já no frigorífico foram de 6.538.610,79 t em 2016 e 9.370.040,96 t em 2017

    CISTOGÊNESE E A EXPRESSÃO DAS POLICISTINAS NOS RINS POLICÍSTICOS

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    A doença renal policística do adulto é uma desordem genética de caráter autossômico dominante, caracterizada pelo progressivo desenvolvimento e crescimento de cistos renais, que podem levar à doença renal terminal durante a fase adulta do indivíduo. Outras manifestações clínicas associadas incluem cistos hepáticos e pancreáticos, hipertensão, aneurismas cerebrais e alterações cardiovasculares. Aspectos celulares e moleculares dos mecanismos de cistogênese envolvem proliferação e apoptose celular, remodelamento da matriz extracelular, secreção e acúmulo de líquidos. Geneticamente heterogênea, na maioria dos casos (~ 85%) são mutações no gene PKD1, localizado no cromossomo 16p13.3, com o segundo gene, PKD2, localizado nos intervalos do cromossomo 4q13-q23, respondendo por 15% de mutações, ambos já seqüenciados e caracterizados, ocorrendo ainda um terceiro gene, PKD3, porém ainda pouco estudado. Existem evidências da interação comum das proteínas policistinas 1 e 2, associadas com proteínas ciliares em rotas de eventos de adesões extracelulares e transportes iônicos, possibilitando a regulação do fluxo de Cl- e Ca2+ transmembrana.Unitermos: Doença renal policística do adulto, biologia molecular, gene PKD1

    Analysis of growth, yield and control of Cophes notaticeps and Polyphagotarsonemus latus in Jatropha curcas plants under different doses of silicon

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    The present study aims to evaluate the effects of Si on growth, yield and resistance of Jatropha curcas plants to Cophes notaticeps and Polyphagotarsonemus latus. The study was carried out in two consecutive years with J. curcas plants with 3 years old in 3x2 m spacing. The assays were set up with randomized complete block design with five concentrations (0, 10, 20, 40 and 80 mM L-1) and five replications. It was set up another experiment in a greenhouse following completely randomized factorial design 5x2 with five silicon concentrations (0, 10, 20, 40 and 80 mM L-1) and two water supply: daily irrigation with water volumes according to 50% and 100% of evapotranspiration, six replications and one plant per plot. The present study allows clarifying that J. curcas plants are non-accumulating plants, for accumulating less than 1% of silicon in the leaves. The low accumulation of silicon in the leaves did not significantly inferred in growth of J. curcas, however, the reduction of specific leaf area possibly occurred by the formation of a thin silica layer and reduced the yield by the decrease sunlight absorption. The silicon did not mitigated the damages by Cophes notaticeps and Polyphagotarsonemus latus by the low ability of the plant to accumulate silicon, however, is possible to affirm that the injuries severity by Cophes notaticeps is proportional to stem diameter

    Ameliorate the cadmium toxicity in Solanum tuberosum L. plants with selenium and silicon application

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    The present study aimed to prove the efficiency of Se or Si as relievers of the Cd toxicity in potato plants. Solanum tuberosum plants, Asterix genotype, from in vitro propagation were placed in pots with sand and irrigated with complete nutrient solution for 60 days under six treatments: T1: Control (nutrient solution); T2: 2.5 µM Se; T3: 2.5 mM Si; T4: 50 µM Cd; T5: 50 µM Cd + 2.5 µM Se; T6: 50µM Cd + 2.5 mM Si. The treatments were arranged in completely randomized design, with four replicates for each treatment and six plants per replicate. The plants were collected at 30 and 60 days after application of the treatments. Cadmium was highly toxic in all parameters (dry and fresh weight, plant height, leaf number, leaf area, root and photosynthetic parameters), in both assessments. However, Se and Si were effective in mitigating Cd toxicity in all parameters, although Si has been shown to be more efficient than Se in dry weight and plant height parameters. Thus, from data obtained in this study, it is clear that the beneficial elements tested have power to ameliorate Cd toxicity

    Growth of potato genotypes under different silicon concentrations

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    The aim of this work was to verify the beneficial potential of Siliconon the growth of potato genotypes in order to select potato genotypes that best respond to Si application. Four potato genotypes were used: SMIJ319-7, Dakota Rose, SMIF212-3 and SMINIA793101, grown in hydroponic system. The plants were transferred to nutrient solutions with four Si concentrations: 0; 0.5; 2.5; and 5.0 mM as NaSiO3. After seven days of exposure to treatments, leaf area, leaf number, shoot length, and fresh and dry weight of roots, stem and leaves were determined. The application of 0.5 mM Si promoted an increase in growth parameters of plants used in this work, mainly in leaf area, leaf number,and leaf and stem dry weight. However, the application of higher concentrations of Si (2.5 mM) promoted reduction in the growth parameters, mainly in leaf area. It was also possible to observe a genotypic variation with respect to Si, SMIJ319-7 and SMIF212-3 genotypes being the most responsive to Si. Therefore, the concentration of 0.5 mM Si is considered optimal for potentiating the growth of potato plants, and SMIJ319-7 and SMIF212-3 genotypes are the most responsive to Si

    Cystogenesis and polycystin expression in polycystic kidneys

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    A doença renal policística do adulto é uma desordem genética de caráter autossômico dominante, caracterizada pelo progressivo desenvolvimento e crescimento de cistos renais, que podem levar à doença renal terminal durante a fase adulta do indivíduo. Outras manifestações clínicas associadas incluem cistos hepáticos e pancreáticos, hipertensão, aneurismas cerebrais e alterações cardiovasculares. Aspectos celulares e moleculares dos mecanismos de cistogênese envolvem proliferação e apoptose celular, remodelamento da matriz extracelular, secreção e acúmulo de líquidos. Geneticamente heterogênea, na maioria dos casos (~ 85%) são mutações no gene PKD1, localizado no cromossomo 16p13.3, com o segundo gene, PKD2, localizado nos intervalos do cromossomo 4q13-q23, respondendo por 15% de mutações, ambos já seqüenciados e caracterizados, ocorrendo ainda um terceiro gene, PKD3, porém ainda pouco estudado. Existem evidências da interação comum das proteínas policistinas 1 e 2, associadas com proteínas ciliares em rotas de eventos de adesões extracelulares e transportes iônicos, possibilitando a regulação do fluxo de Cl- e Ca2+ transmembrana.Adult polycystic kidney disease is an autosomal dominant genetic disorder, characterized by progressive development and growth of renal cysts, which may lead to terminal renal failure during adulthood. Other associated clinical manifestations include hepatic and pancreatic cysts, hypertension, cerebral aneurysms and cardiovascular disorders. Cellular and mononuclear aspects of the mechanisms of cytogenesis comprehend cellular proliferation and apoptosis, remodeling of the extracellular matrix, secretion and accumulation of fluids. This disease is genetically heterogeneous; in most cases (approximately 85%), the gene involved is PKD1, which is located on chromosome 16p13.3. In the remaining cases (15%), the disease is caused by mutational changes in another gene (PKD2), which is located at chromosome intervals 4q13-q23. Both genes have been sequenced and characterized. There is also a third gene, PKD3, which has been little studied. There is evidence of the common interaction of polycystins 1 and 2, associated with ciliary proteins in pathways of extracellular adhesion and ionic transportation events, which promotes the regulation of Cl- and transmembrane Ca2+ flow

    DANOS MOLECULARES EM PACIENTES URÊMICOS SUBMETIDOS À HEMODIÁLISE

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    Os efeitos tóxicos decorrentes do estado urêmico e do tratamento através de hemodiálise vêm sendo sugeridos como responsáveis por danos no DNA em pacientes com insuficiência renal crônica. Dessa forma, muitos trabalhos têm desenvolvido marcadores capazes de identificar esses danos através da análise cromossômica, teste de micronúcleos, teste do cometa, teste eletroquímico e,mais recentemente, análise do DNA mitocondrial. Considerando que esses danos podem aumentar a incidência de câncer, mais estudos devem continuar sendo desenvolvidos nesse sentido.Unitermos: DNA mitocondrial, hemodiálise, danos moleculares, insuficiência renal crônic

    Doença de Fabry : diagnóstico de uma doença rara

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    Fabry disease (FD) is an X-linked inborn error of glycosphingolipid metabolism due to the deficiency of α-galactosidase A. The progressive accumulation of globotriaosylceramide (Gb3), particularly in the vascular endothelium, leads to renal, cardiac, and cerebrovascular manifestations and early death. Clinical manifestations include the onset of pain and paresthesias in extremities, angiokeratoma and hypohidrosis during childhood or adolescence. Proteinuria and lymphedema occur with increasing age. Severe renal impairment leads to hypertension and uremia. Death usually occurs due to renal failure or cardiac or cerebrovascular disease. Disease presentation may be subtle, and its signs and symptoms are often discounted as malingering or are mistakenly attributed to other disorders, such as rheumatic fever, neurosis, multiple sclerosis, lupus, or petechiae. We present a 46-year-old man who since adolescence has suffered from painful acroparesthesia, disseminated skin angiokeratomas, hypohidrosis and heat intolerance. He was submitted to a thorough investigation with different specialists, but never reached a diagnosis. He started hemodialysis 3 years ago and at the moment is in standby for kidney transplantation. He was enrolled in a Brazilian FD screening and a reduced serum activity of α-galactosidase A (0.0027 nmol/h/mL – reference value 4-22) confirmed the diagnosis of FD He has angiokeratoma at the bottom area, his echocardiogram demonstrated left ventricular hypertrophy and the family history is very rich, as the patient has 15 siblings. This case represents a very common story for FD patients. They usually spend most of their lives trying to find someone who could understand or explain their suffering. These results indicate that FD may be much more common among male dialysis patients than previously recognized. Subsequently, FD should be considered in every patient with unexplained renal disease, especially when cardiac or cerebral complications suggest an underlying multisystemic disorder. Early diagnosis of FD is important because it allows family studies to identify other affected relatives for genetic counseling and therapeutic intervention.A doença de Fabry (DF) é um erro inato do metabolismo dos glicoesfingolipídeos devido à deficiência da α-galactosidase A. O acúmulo progressivo de globotriaosilceramida (Gb3),particularmente no endotélio vascular, leva a manifestações renais, cardíacas e cerebrovasculares e morte precoce. As manifestações clínicas incluem o início, durante a infância ou adolescência, de episódios de dor e parestesias nas extremidades, angioqueratomas e hipohidrose. Com a idade, podem aparecer proteinúria e linfedema. Insuficiência renal grave leva à hipertensão e uremia. O óbito ocorre devido à insuficiência renal ou doença cardíaca ou cerebrovascular. A apresentação da doença pode ser sutil, e seus sinais e sintomas são erroneamente atribuídos a outras doenças, como febre reumática, neurose, esclerose múltipla, lúpus ou petéquias. Relatamos o caso de um paciente masculino com 46 anos que, desde a adolescência, sofre de acroparestesia, angioqueratomas disseminados, hipohidrose e intolerância ao calor. Ele foi submetido a extensa investigação com diferentes especialistas, mas nunca chegou a um diagnóstico. Iniciou hemodiálise há 3 anos e, no momento, está na lista de espera para transplante de rim. Participou de um programa brasileiro de triagem para DF, e uma atividade reduzida de α- galactosidase A (0,0027 nmol/h/mL – valor de referência 4-22) confirmou o diagnóstico de DF. O paciente apresenta angioqueratomas na área do calção, seu ecocardiograma demonstra hipertrofia ventricular esquerda e sua história familiar é rica, pois ele tem 15 irmãos. Este caso representa uma história muito comum entre pacientes com DF. Eles geralmente passam a maior parte de suas vidas tentando encontrar alguém que compreenda ou explique seu sofrimento. Estes resultados indicam que a DF pode ser muito mais comum entre homens que realizam hemodiálise do que antes previsto. Subseqüentemente, a DF deve ser considerada em todo paciente com doença renal sem causa aparente, principalmente quando complicações cardíacas ou cerebrovasculares sugerirem uma doença multissistêmica. O diagnóstico precoce da DF é importante, pois permite estudo familiar para identificar parentes afetados para aconselhamento genético e intervenção terapêutica

    Analysis of antimicrobial, antibiofilm, and healing activity of lipid nanocarriers based on Tucuman butter (Astrocaryum vulgare), fixed oils from microalgae chlorella Homosphaera and from UVA seed Vitis vinifera

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    Therapeutic alternatives of natural origin have been arousing the interest of large research centers that are looking for new bioactive molecules to treat numerous diseases in the context of public health. Among them, infectious diseases, which present antimicrobial resistance, deserve attention. The present study aimed to evaluate the antimicrobial activity of lipid nanocarriers (CLN), as well as the healing activity, arising from the association of tucumã butter with grape seed oil and another one containing microalgae oil. Two formulations were prepared using the high-speed homogenization technique, which was evaluated for antimicrobial action for 10 strains of great clinical importance, including a multiresistant and healing activity. The formulation with Chlorella homosphaera oil showed growth inhibition for the 10 strains tested, in addition to antibiofilm activity for 8 strains, bactericidal action for 3 of 3 isolates, and satisfactory healing action in 48 hours

    Genes involved in the control of early kidney development

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    As doenças renais humanas são uns dos maiores problemas de saúde, e vários genes que controlam a nefrogênese estão associados com essas doenças. Os principais genes envolvidos no desenvolvimento inicial do rim são PAX2, EYA1, SIX1 E 2, SALL1, FOXC1, WT1, HOX11, e a maioria dos fatores transcricionais desses genes é importante na regulação do gene GDNF. Esses genes interagem uns com os outros, formando uma espécie de rede genética. O estudo dessas interações genéticas é essencial para o entendimento das bases moleculares das malformações do desenvolvimento renal, que é necessário para a prevenção e tratamento dessas desordens.Renal human diseases are among the leading health problems and many genes that control nephrogenesis are associated with these diseases. The main genes involved in early kidney development are PAX2, EYA1, SIX1 and 2, SALL1, FOXC1, WT1, HOX11, and the majority of their transcriptional factors are relevant to the regulation of GDNF. Those genes interact with one another to create a genetic network. The study of such genetic interactions is crucial for understanding the molecular basis of kidney development malformations, which is necessary for the prevention and treatment of these disorders
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