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STRENGTHENING THE ABDOMINAL CORE ON BALANCE IN BASKETBALL PLAYERS
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Li, Yang

Revista Brasileira de Medicina do Esporte

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2023, Volume 29 elocation e2022_0598

Resumo: En Es Pt | Texto: En Es Pt | PDF: En | PDF: Es | PDF: Pt

ABSTRACT Introduction: Basketball has the characteristics of physical struggle. This demands from its training and teaching that the participants and coaches work on the qualities of strength, speed, and tactics of the sport. Objective: Study the impacts of abdominal core strengthening on balance and agility in basketball players. Methods: After a literature survey, we used basketball players as experimental volunteers, divided into experimental and control groups, to validate an experimental protocol to strengthen the abdominal core added to routine training. T-run tests and Z-run tests were also performed before and after training. The method of mathematical statistics was used to compare the results in the research-relevant data Results: After training, the two sensitivity test results in the young basketball players were significantly higher than the control group, with significant differences (P<0.05), there was no significant difference in the two sensitive quality indices of the control group athletes before and after training (P>0.05). Conclusion: It was evidenced that abdominal core stability training plays a positive role in improving the balance and agility of young basketball players. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMEN Introducción: El baloncesto tiene las características del choque físico. Esto exige de su formación y enseñanza que los participantes y entrenadores trabajen las cualidades de fuerza, velocidad y táctica del deporte. Objetivo: Estudiar los impactos del fortalecimiento del núcleo abdominal en el equilibrio y la agilidad en jugadores de baloncesto. Métodos: Tras un estudio de datos bibliográficos, se utilizaron jugadores de baloncesto como voluntarios experimentales, divididos en grupo experimental y grupo de control para la validación de un protocolo experimental de fortalecimiento del núcleo abdominal añadido al entrenamiento rutinario. También se realizaron pruebas de carrera en T y en Z antes y después del entrenamiento. Se utilizó el método de la estadística matemática para comparar los resultados en los datos relevantes de la investigación Resultados: Después del entrenamiento, los resultados de las dos pruebas de sensibilidad en los jóvenes jugadores de baloncesto fueron significativamente superiores a los del grupo de control, con diferencias significativas (P<0,05); no hubo diferencias significativas en los dos índices de calidad sensitiva de los atletas del grupo de control antes y después del entrenamiento (P>0,05). Conclusión: Se demostró que el entrenamiento de la estabilidad del núcleo abdominal desempeña un papel positivo en la mejora del equilibrio y la agilidad de los jóvenes jugadores de baloncesto. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

RESUMO Introdução: O basquetebol tem as características de embate físico. Isso exige de seu treinamento e ensino que os participantes e treinadores trabalhem as qualidades de força, velocidade e táticas do esporte. Objetivo: Estudar os impactos do fortalecimento do centro abdominal sobre o equilíbrio e agilidade nos jogadores de basquetebol. Métodos: Após um levantamento de dados bibliográficos, utilizou-se jogadores de basquete como voluntários experimentais, divididos em grupo experimental e grupo de controle para validação de um protocolo experimental de fortalecimento do centro abdominal adicionado ao treino de rotina. Testes de corrida T e testes de corrida “Z” também foram realizados antes e depois do treinamento. O método de estatística matemática foi utilizado para comparar os resultados nos dados relevantes à pesquisa Resultados: Após o treinamento, os dois resultados do teste de sensibilidade nos jovens jogadores de basquete foram significativamente superiores aos do grupo controle, com diferenças significativas (P<0,05), não houve diferença significativa nos dois índices de qualidade sensível dos atletas do grupo controle antes e depois do treinamento (P>0,05). Conclusão: Evidenciou-se que o treinamento de estabilidade do centro abdominal desempenha um papel positivo na melhoria do equilíbrio e agilidade sobre os jovens jogadores de basquetebol. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

https://doi.org/10.1590/1517-8692202329012022_0598

Dietary Inclusion of Pancreatin Enzyme on the Ileal and Fecal Digestibility of Nutrients in Layer-Type Cockerels
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Asare, E

; Yang, Z

; Zhou, H

; Cai, Q

; Yang, H

; Wang, Z

Brazilian Journal of Poultry Science

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2023, Volume 25 Nº 1 elocation eRBCA-2022-1673

Resumo: En | Texto: En | PDF: En

ABSTRACT The current experiment aimed to evaluate the effects of Pancreatin supplementation at different levels on ileal and fecal digestibility in layer-type cockerels. A total of 480-day-old silver brown Hy-Line male chicks were randomly allocated into 5 treatments, 6 replicates (16 birds per pen) arranged in a completely randomized design. Pancreatin enzyme was supplemented on a basal corn-soybean meal-based diet at 0, 250, 500, 750, and 1000 mg/kg and was fed in two growth phases (starter and grower). The results indicated that at the end of the starter stage, except for 1000 mg/kg, dietary Pancreatin supplementation levels increased (p<0.05) the ileal crude protein (CP). Similarly, addition of Pancreatin increased (p< 0.05) apparent ileal amino acids (AA) digestibility (AIAAD) total means of AA (MTAA), means of indispensable AA (MIAA) and dispensable AA (MDAA) with the optimum performance on 250 mg/kg and 500 mg/kg. However, except for histidine and alanine which were negatively affected (p<0.05), and MIAA, MDAA, MTAA which were also positively affected, the addition level at 1000 mg/kg did not affect most of the AIAAD compared to the non-supplemented. Further, Pancreatin supplementation had no effect (p>0.05) on nitrogen digestibility (ND), nitrogen retention (NR), digestible energy (DE), apparent metabolizable energy (AME), dry matter digestibility (DMD), dry matter retention (DMR), and apparent metabolizable energy corrected for nitrogen (AME-n) on fed starter diet. On the other hand, at the end of the grower stage, dietary Pancreatin enzyme supplementation reduced (p<0.05) the ileal CP, MIAA, MDAA, MTAA, AIAAD, AME, AME-n, ND, NR, DE, DMD, and DMR in a dose-dependent manner. The rate of reduction was more marked on Pancreatin addition level 1000 mg/kg. In conclusion, Pancreatin supplementation at 250 mg/kg, 500 mg/kg, and 750 mg/kg improved AIAAD and ileal CP, especially at the young age. The rate of pancreatin enzyme effect was dependent on enzyme supplement level to the ileal CP and individual amino acid.

https://doi.org/10.1590/1806-9061-2022-1673

Effect of Conjugated Linoleic Acid in Ovo Feeding to Broiler Embryos on Breast Muscle Transcriptome Changes
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Yang, J

; Hu, Z

; Zhou, K

Brazilian Journal of Poultry Science

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2023, Volume 25 Nº 4 elocation eRBCA-2023-1775

Resumo: En | Texto: En | PDF: En

ABSTRACT To better understand the effects of conjugated linoleic acid (CLA) administered at the early stages of embryonic development in poultry, it is necessary to analyze the molecular background. The molecular interpretation of poultry muscle after in-ovo administration of CLA remains to be reported. The purpose of the present study was to analyze the molecular background of muscle development based on gene expression parameters. On embryonic day (E) 11, the eggs were randomly divided into two groups (20 eggs per replicate). The CLA group was injected with 4.5 mg CLA in 100 mL of ethanol. The control group was injected with 100 mL of ethanol. At hatch, breast muscle samples were collected from four individuals per group for RNA-Seq. The result showed that 278 genes were differentially expressed (p<0.01, fold change >2) between the control group and the CLA group. 112 genes were upregulated in the CLA group, while 166 genes were upregulated in the control group. Function annotation showed that muscle activity (Ventricular cardiac muscle tissue morphogenesis, Adrenergic signaling in cardiomyocytes, Cardiac muscle contraction) and metabolism (Aromatic amino acid family metabolic process, Tyrosine metabolism, Retinol metabolism, Nitrogen metabolism, Cysteine, and methionine metabolism) were significantly enriched, including 11 genes(such as TNNI1, TNNC1, and MYL3) that were considerably upregulated in CLA group likely related to CLA processing by influencing the muscle activity processes and metabolic processes. It was concluded that in ovo, CLA supplementation could change the gene expression pattern of the breast muscle, and might affect muscle development.

https://doi.org/10.1590/1806-9061-2023-1775

Effects of Vitamin A and K3 on Immune Function and Intestinal Antioxidant Capacity of Aged Laying Hens
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Li, L

; Liu, Z

; Fang, B

; Xu, J

; Dong, X

; Yang, L

; Zhang, Z

; Guo, S

; Ding, B

Brazilian Journal of Poultry Science

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2022, Volume 24 Nº 4 elocation eRBCA-2021-1572

Resumo: En | Texto: En | PDF: En

ABSTRACT This study was conducted to investigate effects of vitamin A (VA) and vitamin K3 (VK3) on immune function and intestinal antioxidant capacity of aged laying hens. In a 3 × 3 factorial arrangement, the diets of 1080 Roman Pink laying hens (87 weeks old) was formulated with deficient, adequate and excess VA and VK3, including 0, 7000 and 14000 IU/kg VA and 0, 2.0 and 4.0 mg/kg VK3 for 8 weeks. Interactive effects between VA and VK3 were observed that VA and VK3 decreased the splenetic mRNA expression of inducible nitric oxide synthase (iNOS) and tumour necrosis factor α (TNF-α), but increased the plasma immunoglobulin G (IgG) content and jejunal mRNA expression of nuclear factor-like 2 (Nrf2). Hens fed adequate or excess VA had higher spleen index, mRNA expression of interleukin-10 (IL-10) in spleen, sIgA content, catalase (CAT), glutathione peroxidase and total dismutase (T-SOD) activity, and mRNA expression of polymeric immunoglobulin receptor (pIgR) in jejunum and lower mRNA expression of IL-1β in jejunum and iNOS, TNF-α in spleen. Furthermore, adequate or excess VK3 significantly increased plasma IgG content, the CAT, T-SOD and total antioxidant capacity activities, up-regulated the mRNA expression of pIgR, Nrf2, SOD1 and CAT in jejunum and down-regulated the mRNA expression of iNOS and TNF-α in spleen. In conclusion, dietary addition of adequate VA (7000 IU/kg) and VK3 (2.0 mg/kg) improved the immune function and intestine antioxidant capacity of aged laying hens and excess levels did not exhibit superior effects.

https://doi.org/10.1590/1806-9061-2021-1572

Effect of Supplementary Methionine on Feather Growth and Related Indicators of Pigeon Squabs
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Wang, Y

; Guo, Z

; Meng, J

; Chen, X

; Yang, Z

; Yang, H

; Wang, Z

Brazilian Journal of Poultry Science

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2021, Volume 23 Nº 4 elocation eRBCA-2021-1468

Resumo: En | Texto: En | PDF: En

ABSTRACT We assessed the effect of health sand dietary supplementation with methionine (Met) on White King pigeons. Paired pigeons (n = 180) were fed one of five diets; group T1 received no added Met, while T2, T3, T4 and T5 received 30, 60, 90 and 120 g of supplemental DL-Met/kg, respectively. Each treatment was replicated three times with 24 pairs in each replicate. The results showed that supplementary Met had a minor effect on the length of the fourth primary wing feather in 28-day-old squabs (p>0.05), but the length of 14-day-old squabs in T2 was significantly longer (p=0.010). Dietary Met had a minor effect on Wnt-7a and fibroblast growth factor receptors-2 (FGFR-2) mRNA levels in 28-day-old squabs (p>0.05). The IGF-1 concentration in plasma was highest in T4 and lowest in T2 (p=0.012), but there was no difference between T1, T2 and T5 (p>0.05). In the chest muscle, the expression of IGF-1 in T3 and T4 was higher than in T1 (p=0.172 and 0.015, respectively). In the leg muscle, IGF-1 mRNA level was higher in T4 and T3, and lower in T2 (p>0.05). The results indicate that the optimal Met supplement for increasing fourth primary wing feather length was 30 g/kg Met in health sand, and the feathers were the longest in 14-day-old squabs. Adding 90 g/kg Met to health sand can improve the concentration of IGF-1, which is important for growth performance of pigeon squabs.

https://doi.org/10.1590/1806-9061-2021-1468

Effect of Dialysis Frequency on Microinflammation in Patients with Maintenance Haemodialysis
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Li, F

; Wang, J

; Yang, X

; Hu, Z

; Peng, T

West Indian Medical Journal

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2021, Volume 69 Nº 3 Páginas 140 - 143

Resumo: En | Texto: En | PDF: En

ABSTRACT Objective: To study the influence of different dialysis frequency on microinflammation for the maintenance haemodialysis patients. Methods: Fifty-three maintenance haemodialysis patients with chronic kidney disease were divided into three groups. Groups A, B and C dialysed three times per week, twice per week and three times per 2 weeks, respectively. Total time was 1 year. The index of microinflammation state was measured in all patients before and after 1 year. Results: There were significant differences in the index of microinflammation state between any two groups. Conclusion: Patients who dialysed less than two times each week had a higher rate of microinflammation state. This showed that dialysis frequency was important for maintenance hae- modialysis.

https://doi.org/10.7727/wimj.2016.441

Baryon Acoustic Oscillations from Integrated Neutral Gas Observations: an instrument to observe the 21cm hydrogen line in the redshift range 0.13 < z < 0.45 – status update
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WUENSCHE, CARLOS A.

; ABDALLA, ELCIO

; ABDALLA, FILIPE

; BAROSI, LUCIANO

; WANG, BIN

; AN, RUI

; BARRETOS, JOÃO A. M.

; BATTYE, RICHARD

; BRITO, FRANCISCO A.

; BROWNE, IAN

; CORREIA, DANIEL

; COSTA, ANDRÉ A.

; DELABROUILLE, JACQUES

; DICKINSON, CLIVE

; FENG, CHANG

; FERREIRA, ELISA G. M.

; FORNAZIER, KARIN

; DE GASPERIS, GIANCARLO

; GUTIERREZ, PRISCILA

; HARPER, STUART

; LANDIM, RICARDO G.

; LICCARDO, VINCENZO

; MA, YIN-ZHE

; MACHADO, TELMO

; MAFFEI, BRUNO

; MARINS, ALESSANDRO

; MENDES, MILENA M. M.

; MERICIA, EDUARDO

; MONSTEIN, CHRISTIAN

; MOTTA, PABLO

; NOVAES, CAMILA

; OTOBONE, CARLOS H.

; PEEL, MICHAEL

; QUEIROZ, AMILCAR R.

; RADCLIFFE, CHRISTOPHER

; REMAZEILLES, MATHIEU

; RIBEIRO, RAFAEL M. G.

; SANG, YU

; SANTOS, JULIANA F. R.

; SANTOS, LARISSA

; SANTOS, MARCELO. V.

; SHAN, CHENXI

; SILVA, GUSTAVO B.

; VIEIRA, FREDERICO

; VIEIRA, JORDANY

; VILLELA, THYRSO

; XIAO, LINFENG

; YANG, WEIQIANG

; ZHANG, JIAJUN

; ZHANG, XUE

; ZHU, ZENGHAO

Anais da Academia Brasileira de Ciências

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2021, Volume 93 elocation e20201096

Resumo: En | Texto: En | PDF: En

Abstract BINGO (BAO from Integrated Neutral Gas Observations) is a unique radio telescope designed to map the intensity of neutral hydrogen distribution at cosmological distances, making the first detection of Baryon Acoustic Oscillations (BAO) in the frequency band 980 MHz - 1260 MHz, corresponding to a redshift range 0.127 < z < 0.449. BAO is one of the most powerful probes of cosmological parameters and BINGO was designed to detect the BAO signal to a level that makes it possible to put new constraints on the equation of state of dark energy. The telescope will be built in Paraíba, Brazil and consists of two \thicksim 40m mirrors, a feedhorn array of 50 horns, and no moving parts, working as a drift-scan instrument. It will cover a 15 ^{\circ} ∘ declination strip centered at \sim \delta ∼ δ =-15 ^{\circ} ∘, mapping \sim ∼ 5400 square degrees in the sky. The BINGO consortium is led by University of São Paulo with co-leadership at National Institute for Space Research and Campina Grande Federal University (Brazil). Telescope subsystems have already been fabricated and tested, and the dish and structure fabrication are expected to start in late 2020, as well as the road and terrain preparation.

https://doi.org/10.1590/0001-3765202120201096 413 downloads

Molecular Characterization of Goose Phosphoenolpyruvate Carboxylase Kinase 1 (Pepck) Gene and Its Potential Role in Hepatic Steatosis Induced by Overfeeding
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Tang, B

; Yang, C

; Hu, S

; Sun, W

; Pan, Z

; Li, L

; Wang, J

Brazilian Journal of Poultry Science

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2020, Volume 22 Nº 4 elocation eRBCA-2019-1128

Resumo: En | Texto: En | PDF: En

ABSTRACT Over-accumulation of triglycerides (TGs) in goose hepatocytes leads to the formation of fatty acid liver. Phosphoenolpyruvate carboxylase kinase 1 (PEPCK) is regarded as the rate-limiting enzyme for gluconeogenesis, and there is evidence that PEPCK is involved in regulating hepatic glucolipid metabolism. Hence, we proposed that PEPCK may have a role in goose hepatic steatosis. To test our hypothesis, the present study was conducted to firstly determine the sequence characteristics of goose PEPCK and then to explore its role in overfeeding-induced fatty liver. Our results showed that goose PEPCK encodes a 622-amino-acids protein that contains highly conserved oxaloacetate-binding domain, kinase-1 and kinase-2 motifs. PEPCK had higher mRNA levels in goose liver, and overfeeding markedly increased its expression in livers of both Sichuan White and Landes geese (p<0.05). Besides, expression of PEPCK was positively correlated with hepatic TG levels as well as plasma glucose and insulin concentrations. Additionally, in cultured goose primary hepatocyte, treatment with either oleic acid (0.8, 1.2 or 1.6 mM) or linoleic acid (0.125 or 0.25 mM) significantly (p<0.05) enhanced the expression of PEPCK. Taken together, these data suggested a role for PEPCK in the occurrence of overfeeding-induced goose hepatic steatosis.

https://doi.org/10.1590/1806-9061-2019-1128 342 downloads

Genetic Diversity and Phyletic Evolution of Eleven Chinese Indigenous and Three Commercial Chicken Breeds by mtDNA Sequences
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Yu, C

; Qiu, M

; Jiang, X

; Zhang, Z

; Du, H

; Li, Q

; Xia, B

; Song, X

; Hu, C

; Xiong, X

; Yang, L

; Peng, H

; Chen, J

; Wang, Y

; Yang, C

Brazilian Journal of Poultry Science

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2019, Volume 21 Nº 4 elocation eRBCA-2018-0807

Resumo: En | Texto: En | PDF: En

ABSTRACT Chinese indigenous chicken breeds are geographically widespread, and a total of 116 indigenous chicken breeds are listed as Chinese national genetic resources. However, these indigenous chicken breeds are facing serious challenges as declining population and germplasm degeneration because lots of commercial chicken breeds had been introduced. In this study, the genetic variations of eleven Chinese indigenous chicken breeds of Sichuan province and three commercial chicken breeds were investigated based on the partial mitochondrial DNA D-loop of 487bp in length. 147 individuals from 14 breeds were examined and 34 haplotypes were observed. Genetic diversity analysis showed that the highest haplotype diversity level was found in Dahen Chicken (DH) population, while the Arbor Acres Chicken (WF) and Roman layer (RM) showed lower genetic diversity levels. The long-term artificial selection may lead to reduced nucleotide diversity. Genetic population differentiation analysis indicated that most of the variation (80.80%) was attributed to variations among breeds. Phylogenetic analysis revealed that these individuals were divided into four distinct genetic clades, including cluster A, B, C and D. Eighteen haplotypes were classified as cluster A, eight haplotypes were classified as cluster B, five haplotypes were classified as cluster C and three haplotypes were classified as cluster D. There was no breed-specific clade. Our study firstly identified the population’s genetic structure of Chinese indigenous chickens and the most important commercial breeds in Sichuan province, though the genetic diversity of indigenous breeds did not suffer obvious decrease, but could be helpful for efficient artificial breeding selection and genetic resources conservation.

https://doi.org/10.1590/1806-9061-2018-0807 1008 downloads

10.

Detection of Snps in the Melanocortin 1-Receptor (MC1R) and Its Association with Shank Color Trait in Hs Chicken
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Shen, X

; Wang, Y

; Cui, C

; Zhao, X

; Li, D

; Zhu, Q

; Jiang, X

; Yang, C

; Qiu, M

; Yu, C

; Li, Q

; Du, H

; Zhang, Z

; Yin, H

Brazilian Journal of Poultry Science

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2019, Volume 21 Nº 3 elocation eRBCA-2018-0845

Resumo: En | Texto: En | PDF: En

ABSTRACT The melanocortin 1 receptor (MC1R) gene plays a key role in controlling the deposition of melanin. In mammals, the MC1Rgene is regarded as a major candidate gene in the control of melanin formation. In domestic animals, the MC1R gene mainly controls the expression of coat, skin, and plumage color in mammals and birds. In order to breed chickens with dark-green shank faster, we screened the molecular markers for shank color in a HS chicken population by exploring the relationship between polymorphism of the MC1R gene and three different shank colors (light green, dark green and yellow). Two primer pairs for code region of the MC1R gene were designed in the basic of chicken genomic sequence. DNA sequencing was performed to detect the polymorphisms and PCR was used to amplify DNA fragment. Sequences analysis indicated that 7 SNPs were predominant the three HS chicken populations with different shank color, including g.18,287,945C>T, g.18,288,088T>C, g.18,288,150G>A, g.18,288,303A>G, g.18,288,512G>A, g.18,288,513T>C, and g.18,288,520A>C. Association analysis revealed that the dark-green shank population showed moderate polymorphism, whereas the light-green shank population showed low polymorphism among overall 7 SNPs and that SNP6 (g.18,288,513T>C) may be significantly associated with three different shank colors in HS chickens. The haplotype CTGGACA had the largest haplotype frequencies, accounting for 56.22%, and the haplotype combination H1H1 is mainly distributed in the dark-green shank population, and may be used as molecular maker for marker-assisted selection of shank color in HS chickens.

https://doi.org/10.1590/1806-9061-2018-0845 741 downloads

11.

Variations in Tissue-Specific Expression of Adipose Differentiation-Related Protein Gene in Two Native Yunnan Chicken Breeds
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Zhang, B

; Xiang, D

; Yang, R

; Yang, L

; Li, J

; Zhao, Z

Brazilian Journal of Poultry Science

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2019, Volume 21 Nº 1 elocation eRBCA-2019-0780

Resumo: En | Texto: En | PDF: En

ABSTRACT Adipose differentiation-related protein (ADFP) is a fatty acid-binding protein that can promote the absorption of long-chain fatty acids. However, few results have been published regarding its role in Yunnan Native chicken breeds. The aim of this study was to determine ADFP gene tissue-specific expression in Piao chickens (PC) and Wuliangshan black-bone chickens (WBC) by RT-qPCR. The ontogenetic expression levels of the ADFP gene were significantly different during growth and development phases in the subcutaneous fat, liver, and pectoralis muscle of PC, and in the subcutaneous fat, liver, and pectoralis muscle of WBC (p<0.05). Individual tissue-differential expression levelswere detectedon d 91 and 112 in PC, with highest levels determined in abdominal fat and subcutaneous fat, respectively. However, in WBC, the highest levels were determined on d 49, 91 and 112 d in the pectoralis muscle and liver. Correlation analysis revealed ADFP expression level in liver of WBC was significantly related with LW and HC (p<0.05), while no significant correlations with carcass fatness (CF) were found in PC (p>0.05). The results suggest ADFPdifferential expression in the liver and pectoral muscles of PC and WBC during the growth and development phases (p<0.05). The observed expression patterns indicate that the ADFP gene plays an important role in lipid metabolism of PC and WBC, and that these patterns are expressed differently in the tissues of different chicken genotypes.

https://doi.org/10.1590/1806-9061-2017-0780 761 downloads

12.

Epigallocatechin Gallate (EGCG) Inhibited the Alv-J-Induced Apoptosis in Df-1 Cells by Inactivation of Nuclear Factor κb Pathway
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Zhang, Y

; Yang, H

; Wu, X

; Deng, M

; Li, Z

; Xu, Z

Brazilian Journal of Poultry Science

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2019, Volume 21 Nº 1 elocation eRBCA-2019-0832

Resumo: En | Texto: En | PDF: En

ABSTRACT Avian leukosis virus subgroup J (ALV-J), a member of the retroviridae family, can infect both broilers and layers and induce a spectrum of different neoplasms, resulting in serious economic losses in poultry production. Epigallocatechin-3-gallate (EGCG), the major constituent of green tea, has demonstrated remarkable anti-inflammatory and cancer chemopreventive effects in many animal tumor bioassays, cell culture systems and epidemiological studies. To assess the antiviral effects of EGCG on ALV-J-induced cell apoptosis in vitro, DF-1 cells were treated with different EGCG concentrations (0, 5, 10, 20 and 40 µg/mL), and their antiviral effects were examined at different time points (0, 24, 48, 72 and 96 h) using a variety of assays. EGCG alleviated the ALV-J-induced apoptosis in a dose-dependent manner. Because high concentrations (20 and 40 µg/mL) inhibited DF-1 cell growth, and low concentration (5 µg/mL) did not suppress the ALV-J virus, 10 µg/mL was the most appropriate concentration. After 96 h of incubation, 10 µg/mL EGCG improved the ALV-J-triggered suppression of the nuclear transcription factor system by enhancing cytoplasmic NF-κB p50/p65 expression and inhibiting nuclear NF-κB p50/p65 expression, resulting in decreased cell apoptosis. These results demonstrated that EGCG inhibited ALV-J-induced apoptosis in DF-1 cells in a dose-dependent manner via the NF-κB signaling pathway, and that 10 µg/mL EGCG is the optimal concentration, which may be useful for therapeutic drug design.

https://doi.org/10.1590/1806-9061-2018-0832 597 downloads

13.

Oxidation Behavior of Al-Y Coating on γ-TiAl at 900°C
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Z G, Yang

; W P, Liang

; Q, Miao

; R Y, Hu

; Y P, Song

Matéria (Rio de Janeiro)

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2019, Volume 24 Nº 1 elocation e-12273

Resumo: En | Texto: En | PDF: En

ABSTRACT In this study, an Al-Y coating was applied to enhance the property of oxidation resistance on the surface of γ-TiAl alloys by rf magnetron sputtering. The isothermal oxidation tests were investigated at 900 °C for 100 h. The coating characteristics and microstructure of coating after isothermal oxidation were inspected by XRD and SEM methods respectively, and coating bonding strength was investigated by scratch tester. Results show that Al2O3 and Y2O3 were produced on the surface of γ-TiAl alloys to enhance oxidation resistance during the isothermal oxidation test. Diffusion layer with rich element of Al provides abundant Al to surface for formation of a continuous Al2O3 layer which increases oxidation resistance effectively. Oxides of YAlO3 and YAG were formed during the oxidation tests, which were beneficial for the strength, hardness and fracture toughness of crystal grain of Al2O3. Furthermore, Element of Ti diffused into surface from substrate was restrained by Al because of the formation of TiAl3 and TiAl, which avoid the layer-broken by titanium oxides with porous structure

https://doi.org/10.1590/s1517-707620190001.0649 598 downloads

14.

Effects of Dietary Copper on Growth Performance, Slaughter Performance and Nutrient Content of Fecal in Growing Goslings from 28 to 70 Days of Age
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Yang, Z

; Qi, XM

; Yang, HM

; Dai, H

; Xu, CX

; Wang, ZY

Brazilian Journal of Poultry Science

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Mar 2018, Volume 20 Nº 1 Páginas 45 - 52

Resumo: En | Texto: En | PDF: En

ABSTRACT A dose-response experiment with four dietary copper concentrations (4.17, 8.17, 12.17 and 16.17 mg/kg) was conducted to estimate the growth performance, slaughter performance, nutrient content of fecal and liver copper concentrations of growing Goslings from 28 to 70 d of age. Two hundred healthy male Yangzhou geese with similar body weight were randomized to four groups with five replicates per treatment and ten geese per replicate. Average daily feed intake, average daily gain and feed conversion ratio of geese for each pen were measured from 28 to 70 d of age. At 70 d of age, two geese were selected randomly from each pen and slaughtered to evaluate carcass quality. Metabolism experiment was conducted with five male geese from each group (one goose per pen) which body weight was close to the mean weight of the group from 64 to 70 d of age. Significant effects of dietary copper was found on body weight, feed conversion ratio, carcass yield, fecal copper concentrations and liver copper concentrations. Body weight, feed conversion ratio and carcass yield showed significant quadratic response to increase dietary copper concentration, while fecal copper concentration and liver copper concentration showed a significant linear response. The result showed that dietary Cu addition can improve growth by increasing the use of the feeding stuff and improving carcass yield in growing Goslings. Furthermore, taking into consideration, the optimal level of Gosling dietary copper was between 8.77 and 11.6 mg/kg from 28 to 70 days of age.

https://doi.org/10.1590/1806-9061-2017-0536 1779 downloads

15.

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O
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ZHANG, RONG-HUA

; ZHAO, DAN

; HUANG, MIN

; YANG, RUI-JUAN

; MA, FA-XUE

; FAN, YUN-CHANG

Journal of the Chilean Chemical Society

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Mar 2017, Volume 62 Nº 1 Páginas 3403 - 3406

Resumo: En | Texto: En | PDF: En

A new sodium europium carbonate hydrate, Na3Eu(CO3)3•6H2O, has been prepared using the hydrothermal method, and its structure was determined by single crystal X-Ray diffraction analysis for the first time. It crystallizes in the polar hexagonal space group P6(3) with a = 11.382(9) Å, c = 5.989(5) Å, V = 672.06(9) Å³, Z = 2, Mr = 509.06, Dc = 2.516 g/cm³, F(000) = 492, μ(MoKα) = 4.84 mm-1, R1 = 0.015 and wR = 0.038. The structure features a three-dimensional (3D) framework composed of planar (CO3)2- triangles, Eu3+ ions and Na+ ions, which delimits 1D infinite chains with a hexangular star appearance along the c-axis. The IR spectrum and the self-activated photoluminescence properties were studied. Under the excitation of near UV light (395nm), it shows strong red emission at 618 nm with a lifetime of 348.7 μs. Present research indicates that Na3Eu(CO3)3•6H2O is a promising red phosphor for white light-emitting diodes.

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