Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 7 de 7
Filtrar
Mais filtros











Intervalo de ano de publicação
1.
Environ Sci Pollut Res Int ; 30(12): 32751-32761, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36469267

RESUMO

The presented work analyzes the energy prices, climate shock, and health deprivation nexus in the BRICS economies for the period 1995-2020. Panel ARDL-PMG technique is used to reveal the underexplored linkages. The long-run estimates of energy prices are observed to be negatively significant to the health expenditure and life expectancy model, whereas, positively significant to the climate change model. These findings suggest that energy prices significantly reduce health expenditures and life expectancy and, thus, increase the death rate in the BRICS economies. The long-run country-wise estimate of energy prices is found negatively significant in case of Brazil, India, China, and South Africa. Alongside, the group-wise significance of CO2 emissions is discovered to be negatively, positively, and insignificant in the cases of life expectancy, death rate, and health expenditure models, respectively. Besides, country-wise long-run estimate of CO2 emissions witnesses negative significance for Russia, India, China, and South Africa.


Assuntos
Dióxido de Carbono , Desenvolvimento Econômico , Humanos , Dióxido de Carbono/análise , China , Índia , Brasil , Federação Russa , África do Sul
2.
Braz. arch. biol. technol ; Braz. arch. biol. technol;65: e22210347, 2022. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1364434

RESUMO

Abstract: Olive is grown in semi-arid climatic conditions; however, little is known about mineral changes in olive plant and nutrient requirements during the production period. Hence, the current study was conducted under Pothwar agro-climatic conditions in order to select appropriate stage of macronutrients (N, P, K) application in relation to soil and leaf nutritional status during 2017 and 2018 growing seasons. Soil and leaf analysis were performed at four different phenological stages (i.e. flowering, fruit setting, fruit enlargement and fruit maturity stages). The results revealed that the assessed macronutrient in leaf and soil varied significantly among varieties, phenological stages and growing year. The results revealed also that nitrogen level was found to decrease from fruit set (1.56%) to fruit enlargement stage (1.47%). Leaf and soil N, P and K contents were found higher before the flowering (stage 1) and depleted after fruit harvesting (stage 4), regardless of olive varieties. However, high yielding varieties showed lower nutrients after fruit harvesting (stage 4). Therefore, N content in leaf and soil gradually decreased during fruit growth and development. Whereas, K content in leaf and soil sharply declined from fruit maturity to fruit ripening stage. Overall, the trend of nutrient depletion showed that plants need phosphorus for fruit setting, nitrogen before and after fruit setting, and potash after pit hardening or at oil accumulation stages.

3.
Rev. bras. ciênc. avic ; 24(4): eRBCA-2021-1454, 2022. tab
Artigo em Inglês | VETINDEX | ID: biblio-1382035

RESUMO

Bone mineralization is considered an essential source of minerals for metabolic needs that provide strength and hardness to the bone tissues and in birds its development can be enhanced by the use of dietary supplements. The present study was executed to evaluate the influence of prebiotic, probiotic and antibiotic on the morphometric aspects of tibia bone in broilers. One-hundred and sixty-one-day-old broiler chick were divided randomly into four groups (n=40) with 4 replicates (n=10 in each replicate). Group-I fed with only corn based basal diet and served as controlled group. Group-II with antibiotic supplement (Zinc bacitracin 0.04%), Group-III with probiotic supplement (lactobacillus 0.1%) & Group-IV with prebiotic supplement (mannan oligosaccharide 0.1%). On the 35th day, two birds were selected randomly from each replicate and slaughtered to record the morphometric parameters of both right and left tibia bones from each bird. The findings showed that the length, weight, thickness of lateral and medial wall, tibiotarsal index of bone and bone ash percentage of supplemented groups have had significant (p<0.05) difference when compared to that of the controlled group. The weight/length index in birds supplemented with prebiotic and probiotic was significantly higher (p<0.05) than in the antibiotic supplemented and control group. Medullary canal diameter of all the supplemented groups was significantly lower (p<0.05) than the control group. No significant (p>0.05) difference of robusticity index and diaphysis diameter was observed among various groups. A significant (p<0.05) low level of Alkaline Phosphatase while higher level of Calcium and Phosphorus was recorded in the supplemented groups compared to that of the control group. In conclusion, the use of prebiotic and probiotic as growth promoter can exhibit some underline mechanisms in the form of enhancement of bone quality, density and characteristics in broiler chicks as compared to common antibiotics.(AU)


Assuntos
Animais , Tíbia/química , Fenômenos Bioquímicos/fisiologia , Galinhas/fisiologia , Probióticos/efeitos adversos , Prebióticos/efeitos adversos , Antibacterianos/efeitos adversos
4.
Braz. J. Pharm. Sci. (Online) ; 57: e18954, 2021. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1345456

RESUMO

The ethanolic extract of resinous sediment (EERS) of Etlingera elatior young inflorescence was examined for its anticancer effect and potential antioxidant activity. The anticancer effect of the EERS was evaluated on four human cancer cell lines, HCT 116, HT-29, Hela, and MCF-7, using the MTT assay. GC-MS analysis showed that the main components found in the EERS were nonyl cyclopropane (4.44%), 1-tetradecane (3.66%), cyclotetradecane (2.41%), cyclododecane (1.92%), and 1-decene (1.72%). The antioxidant activity was determined through different methods. High amounts of TPC and TFC in the EERS were found. Moderate antioxidant capacity of the EERS was detected by DPPH and ABTS assays, with EC50 values of 44.19 and 56.61 µg/mL and a high FRAP value of 281.79 nmol Fe+2 equivalent/mg extract. In the MTT assay, the EERS showed potent anticancer activity, with IC50 values of 19.82, 37.001, 50.49, and 53.29 µg/mL against HT-29, HCT 116, Hela, and MCF-7 tumour cell lines, respectively. Moreover, the results were comparable to or less potent than the standard reference drug, 5-fluorouracil. The results showed that the EERS of Etlingera elatior inflorescence contained a high amount of polyphenols and flavonoids, which may to the selective antiproliferative effects towards colon cancer in vitro


Assuntos
Zingiberaceae/classificação , Inflorescência/anatomia & histologia , Fluoruracila/farmacologia , Neoplasias , Antioxidantes/análise , Técnicas In Vitro/métodos , Preparações Farmacêuticas , Anticarcinógenos/efeitos adversos , Neoplasias do Colo/patologia
5.
Electron. j. biotechnol ; Electron. j. biotechnol;47: 72-82, sept. 2020. tab, ilus, graf
Artigo em Inglês | LILACS | ID: biblio-1253093

RESUMO

BACKGROUND: Piercing/sucking insect pests in the order Hemiptera causes substantial crop losses by removing photoassimilates and transmitting viruses to their host plants. Cloning and heterologous expression of plantderived insect resistance genes is a promising approach to control aphids and other sap-sucking insect pests. While expression from the constitutive 35S promoter provides broad protection, the phloem-specific rolC promoter provides better defense against sap sucking insects. The selection of plant-derived insect resistance genes for expression in crop species will minimize bio-safety concerns. RESULTS: Pinellia ternata leaf agglutinin gene (pta), encodes an insecticidal lectin, was isolated and cloned under the 35S and rolC promoters in the pGA482 plant transformation vector for Agrobacterium-mediated tobacco transformation. Integration and expression of the transgene was validated by Southern blotting and qRT-PCR, respectively. Insect bioassays data of transgenic tobacco plants showed that expression of pta under rolC promoter caused 100% aphid mortality and reduced aphid fecundity up to 70% in transgenic tobacco line LRP9. These results highlight the better effectivity of pta under rolC promoter to control phloem feeders, aphids. CONCLUSIONS: These findings suggested the potential of PTA against aphids and other sap sucking insect pests. Evaluation of gene in tobacco under two different promoters; 35S constitutive promoter and rolC phloemspecific promoter could be successfully use for other crop plants particularly in cotton. Development of transgenic cotton plants using plant-derived insecticidal, PTA, would be key step towards commercialization of environmentally safe insect-resistant crops.


Assuntos
Afídeos/patogenicidade , Controle Biológico de Vetores , Pinellia/química , Vírus de Plantas , Nicotiana , Southern Blotting , Reação em Cadeia da Polimerase , Regiões Promotoras Genéticas , Plantas Geneticamente Modificadas , Folhas de Planta/química , Transgenes , Resistência à Doença , Proteção de Cultivos
6.
Braz. J. Pharm. Sci. (Online) ; 55: e18408, 2019. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1055295

RESUMO

The current study evaluated antidiabetic and antihyperlipidemic activities of aqueous extract of Sigesbeckia orientalis L. (St. Paul's Wort) (AESO) in an alloxan-induced diabetic rat model. Following OECD guidelines safe doses of AESO were assessed in rats for the main study. Serum/bood glucose, α-amylase, and lipids levels and histopathological evaluations were conducted to assess antidiabetic and associated antihyperlipidemic efficacies of AESO. AESO was found to be safe up to the dose of 2000 mg/kg. Significant (p < 0.05) reduction in glucose and lipids (total cholesterol, triglycerides, low-density lipoproteins) levels was observed in AESO treatment groups. Serum α-amylase, high-density lipoproteins, and total body weight was increased significantly (p < 0.05) in diabetic rats treated with AESO. Histopathological data showed improvement in hepatocyte and pancreatic β-cells islets architecture. HPLC analysis identified quercetin, gallic acid, vanillic acid, p-coumaric acid, m-coumaric acid and cinnamic acid in AESO which are suggested to be responsible for observed antihyperglycemic and antihyperlipidemic attributes. Further studies to standardise the extract and evaluation of safety profile in long-term toxicity studies are recommended for safe and effective antidiabetic nutraceuticals development.

7.
Acta bioeth ; 19(1): 131-136, jun. 2013. tab
Artigo em Inglês | LILACS | ID: lil-684332

RESUMO

The objective of this study was to assess the improvement in knowledge and attitude of Pharmacy student towards diabetes by implementing one week long education program. Study design: Study was conducted between April 25, 2011 to April 29, 2011 which engaged the 3rd professional year Pharm. D. students comprising two groups: experimental and control groups. Lectures and visual presentations on diabetic education and practice were conducted for five days. Three surveys were performed on two groups i.e. non intervened control, non- intervened experimental and intervened experimental surveys. Questionnaire was used as survey tool comprising of 46 questions under ten categories. Results: Scores in all diabetic knowledge aspect was increased after education intervention and was significantly (P<0.05) different from that of control group. Conclusion: The marked increase in knowledge about diabetes among pharmacy students illustrates the importance of educational intervention. Educational programs may markedly increase the educational skills, efficiency and confidence of pharmacy students as well as professionals.


El objetivo del estudio fue evaluar cómo mejorar el conocimiento y la actitud de los estudiantes de Farmacia hacia la diabetes, mediante la implementación de un programa de educación de una semana. Diseño: El estudio se realizó entre el 25 y el 29 de abril de 2011, entre estudiantes de 3er año de la carrera de Farmacia, conformados en dos grupos: uno experimental y otro de control. Se llevaron a cabo conferencias y presentaciones visuales en educación y práctica de la diabetes durante cinco días. Tres estudios se realizaron en dos grupos: el grupo control y experimental no intervenido y el de estudio experimental intervenido. Un cuestionario se utilizó como herramienta de estudio con 46 preguntas en diez categorías. Resultados: Las puntuaciones en el conocimiento sobre todo aspecto de la diabetes se incrementó después de la intervención educativa, lo que fue significativo (P <0,05) diferente de la de grupo de control. Conclusión: El marcado aumento en el conocimiento sobre la diabetes entre los estudiantes de farmacia ilustra la importancia de la intervención educativa. Los programas educativos pueden aumentar notablemente la capacidad educativa, la eficiencia y la confianza tanto en los estudiantes de farmacia, así como en los profesionales.


O objetivo do estudo foi avaliar como melhorar o conhecimento e a atitude dos estudantes de Farmácia para o diabetes, mediante a implementação de um programa de educação de uma semana. Projeto: O estudo se realizou entre 25 e 29 de abril de 2011, entre estudantes de 3º ano do curso de Farmácia, conformados em dois grupos: um experimental e outro de controle. Foram levadas a cabo conferências e apresentações visuais em educação e prática do diabetes durante cinco dias. Três estudos foram realizados em dois grupos: o grupo controle e experimental sem intervenção e o grupo de estudo experimental com intervenção. Um questionário foi utilizado como ferramenta de estudo com 46 perguntas em dez categorias. Resultados: As pontuações no conhecimento sobre todo aspecto do diabetes foi incrementado depois da intervenção educativa, o que foi significativamente (P <0,05) diferente das do grupo de controle. Conclusão: O marcado aumento no conhecimento sobre o diabetes entre os estudantes de farmácia ilustra a importância da intervenção educativa. Os programas educativos podem aumentar notavelmente a capacidade educativa, a eficiência e a confiança tanto nos estudantes de farmácia, bem como nos profissionais.


Assuntos
Humanos , Diabetes Mellitus , Educação em Saúde , Conhecimentos, Atitudes e Prática em Saúde , Estudantes de Farmácia , Inquéritos e Questionários
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA