Non-specific immune parameters and physiological response of Nile tilapia fed β-glucan and vitamin C for different periods and submitted to stress and bacterial challenge

Barros, Margarida Maria; Falcon, Dario Rocha; Orsi, Ricardo de Oliveira; Pezzato, Luiz Edivaldo; Fernandes, Ademir Calvo; Guimarães, Igo Gomes; Júnior, Ary Fernandes; Padovani, Carlos Roberto; Sartori, Maria Márcia Pereira

doi:10.1016/j.fsi.2014.05.004

Cited by 78 publications

(60 citation statements)

References 54 publications

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“…for Nile tilapia.However, values for Leuk, Lymp, Neut and Mon were similar to values obtained in fingerling Nile tilapia(Barros et al, 2014) andMehrim (2014). Leuk, Lynf, Neut and Mon are cells responsible for specific and unspecific immunological responses, and under normal conditions, Lynf are the most predominant cells in tilapia (Ranzani-Paiva andSilva-Souza, 2004), as confirmed in the present work.…”

supporting

confidence: 85%

Dietary histidine requirement of Nile tilapia juveniles based on growth performance, expression of muscle-growth-related genes and haematological responses

et al. 2017

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supporting

confidence: 85%

Dietary histidine requirement of Nile tilapia juveniles based on growth performance, expression of muscle-growth-related genes and haematological responses

et al. 2017

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“…Such bacterial challenge was performed in another independent system. A. hydrophila from a virulent outbreak of hemorrhagic septicemia in Nile tilapia was grown in BHI at 28 °C for 18 h. The bacteria suspension was adjusted to 1.5 x 10 8 CFU mL Barros et al (2014).…”

Section: Bacterial Challengementioning

confidence: 99%

Activity of Brazilian propolis against Aeromonas hydrophila and its effect on Nile tilapia growth, hematological and non-specific immune response under bacterial infection

Orsi

Santos

Pezzato

et al. 2017

An. Acad. Bras. Ciênc.

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The effect of the ethanolic extract of propolis (EEP) on Aeromonas hydrophila was analyzed by determination of minimum inhibitory concentration (MIC). Then, the effects of crude propolis powder (CPP) on growth, hemato-immune parameters of the Nile tilapia, as well as its effects on resistance to A. hydrophila challenge were investigated. The CPP (0.5, 1.0, 1.5, 2.0, 2.5 and 3.0%) was added to the diet of 280 Nile tilapia (50.0 ± 5.7 g fish -1 ). Hemato-immune parameters were analyzed before and after the bacterial challenge. Red blood cell, hematocrit, hemoglobin, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), and hydrogen peroxide (H 2 O 2 ) and nitric oxide (NO) were evaluated. The MIC of the EEP was 13% (v/v) with a bactericidal effect after 24 hours. Growth performance was significantly lower for those fish fed diets containing 2.5 and 3% of CPP compared to the control diet. Differences in CPP levels affected fish hemoglobin, neutrophils number and NO following the bacterial challenge. For others parameters no significant differences were observed. Our results show that although propolis has bactericidal properties in vitro, the addition of crude propolis powder to Nile tilapia extruded diets does not necessarily lead to an improvement of fish health.

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“…Many studies have shown that b-glucan plays an important role in activating the immune system (Sirimanapong et al 2015;Miest et al 2016) and conferring the protection against various stress reactions in aquatic animals (Barros et al 2014;Soltanian et al 2014;Dawood et al 2015). It is well known that the enhancement of stress resistance has been closely linked to improving energy metabolism (Lushchak 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of β-glucan on ROS production and energy metabolism in yellow croaker (Pseudosciaena crocea) under acute hypoxic stress

Zeng

Wang

et al. 2016

Fish Physiol Biochem

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The aim of the present study was to evaluate the effect of β-glucan on acute hypoxia-induced oxidative stress and the changes in energy metabolism by determining ROS production, activities and mRNA levels of energy metabolism enzyme (PK, F-ATPase, SDH and MDH), and in gene expression of HIF-1α in the liver of large yellow croaker. Fish were injected with β-glucan at a dose of 0 or 5 mg kg(-1) body weight on 6, 4 and 2 days before exposed to 1.5 and 7.0 mg DO L(-1) for 48 h. The results showed that β-glucan enhanced survival rate and reduced ROS during the lethal hypoxic stress, indicating that β-glucan could ameliorate hypoxia-induced oxidative stress. Obtained results also showed that β-glucan could up-regulate activities and mRNA levels of PK, demonstrating that β-glucan increased anaerobic glycolysis capacity. Furthermore, a coordinated transcriptional regulation of energy metabolism enzyme genes was observed, suggesting that HIF-1α is required for regulating these genes. In conclusion, β-glucan could alleviate cute hypoxia-induced oxidative stress in large yellow croker by enhancing anaerobic glycolysis capacity, emphasizing a central role of transcription factor HIF-1α in the process.

show abstract

Non-specific immune parameters and physiological response of Nile tilapia fed β-glucan and vitamin C for different periods and submitted to stress and bacterial challenge

Cited by 78 publications

References 54 publications

Dietary histidine requirement of Nile tilapia juveniles based on growth performance, expression of muscle-growth-related genes and haematological responses

Dietary histidine requirement of Nile tilapia juveniles based on growth performance, expression of muscle-growth-related genes and haematological responses

Activity of Brazilian propolis against Aeromonas hydrophila and its effect on Nile tilapia growth, hematological and non-specific immune response under bacterial infection

Effects of β-glucan on ROS production and energy metabolism in yellow croaker (Pseudosciaena crocea) under acute hypoxic stress

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