scholarly journals DietaryN-acetylcysteine supplementation alleviates liver injury in lipopolysaccharide-challenged piglets

2013 ◽  
Vol 111 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Dan Yi ◽  
Yongqing Hou ◽  
Lei Wang ◽  
Binying Ding ◽  
Zhengguo Yang ◽  
...  
Keyword(s):  
Liver Injury ◽  
Heat Shock Protein 70 ◽  
Basal Diet ◽  
Control Group ◽  
Saline Injection ◽  
Antioxidative Capacity ◽  
Blood Samples ◽  
Lps Challenge ◽  
Tnf Α ◽  
Pro Inflammatory Cytokines

The present study was carried out to determine whetherN-acetylcysteine (NAC) could modulate liver injury in a lipopolysaccharide (LPS)-challenged piglet model. For this purpose, eighteen piglets were randomly assigned to the control, LPS or NAC group. Piglets in the control and LPS groups were fed a basal diet, whereas those in the NAC group were fed the basal diet supplemented with 500 mg/kg NAC. On days 10, 13 and 20 of the trial, the LPS- and NAC-treated piglets were intraperitoneally administered LPS (100 μg/kg body weight), while the control group was administered the same volume of saline. On day 20 of the trial, blood samples were obtained 3 h after LPS or saline injection. On day 21, the piglets were killed to collect liver samples. Dietary NAC supplementation attenuated LPS-induced liver histomorphological abnormalities. Compared with the control group, in the LPS-challenged piglets, the activities of alanine aminotransferase and aspartate aminotransferase and the concentrations of H2O2, TNF-α, IL-6 and PGE2were dramatically increased in the plasma and the activity of superoxide dismutase in the plasma and that of glutathione peroxidase in the liver were significantly decreased. The LPS challenge also increased the concentration of AMP and the ratio of AMP:ATP, but decreased adenylate energy charges and the levels of ATP and ADP. These adverse effects of the LPS challenge were ameliorated by NAC supplementation. Moreover, NAC inhibited the LPS-induced increases in the abundance of liver heat shock protein 70 and NF-κB proteins. In conclusion, these results suggest that dietary NAC supplementation alleviates LPS-induced liver injury by reducing the secretion of pro-inflammatory cytokines, increasing the antioxidative capacity and improving energy metabolism.

scholarly journals Olive Extract Ameliorates Oxidative Stress and Inflammation, and Protects Intestinal Villus and Microbiota in Piglets Induced by Lipopolysaccharides

2020 ◽  
Author(s):  
Yu Zhang ◽  
Zhao-Xi Deng ◽  
Mao-Long He ◽  
Xin M. Luo ◽  
Jian-Xin Liu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Block Design ◽  
Basal Diet ◽  
Control Group ◽  
Weaned Piglets ◽  
Intestinal Villus ◽  
Maslinic Acid ◽  
Lps Challenge ◽  
Tnf Α ◽  
Anti Inflammatory

Abstract Background: The olive extract contains compounds with antioxidant and anti-inflammatory properties. This study was designed to investigate whether olive cake extract, enriched with maslinic acid and hydroxytyrosol, alleviates the lipopolysaccharides (LPS)-induced oxidative stress, inflammation and intestinal villus damage in piglets.Methods: Thirty weaned piglets (6.9±0.9 kg) were assigned to five groups using a randomized complete block design. Piglets were fed a basal diet before intraperitoneal (i.p.) injection of physiological saline (C); fed a basal diet alone (CL) or fed a basal diet plus olive extract (OL), antibiotics (AL), or olive extract and antibiotics (OAL) before i.p. injection of LPS. The feeding lasted for 2 weeks. Piglets were euthanized 4h after LPS injection. Systemic anti-oxidant and inflammation levels were measured and villus morphology in the intestine was examined.Results: Compared with those in the C group, piglets in the CL group had significantly lower GSH-Px, SOD, ALB levels and higher MDA, NO, LDH, ALT and AST levels in the serum (P<0.05). Compared with the CL group, piglets in OL, AL, and OAL groups had significantly higher serum GSH-Px, SOD and ALB levels and lower MDA, NO, LDH, ALT and AST levels (P<0.05). LPS administration significantly increased the serum concentration of TNF-α, IL-6, DAO and D-xylose in the CL group compared with the control group (P<0.05). Piglets in OL, AL, and OAL groups had significantly lower serum TNF-α, IL-6, DAO and D-xylose levels and higher IL-10 level (P<0.05). In the duodenum and ileum of piglets, LPS challenge led to significantly lower villus height (VH), higher crypt depth (CD) and lower VH/CD compared with the control group (P<0.05), whereas, OL, AL, and OAL groups had significantly lower CD and higher VH/CD compared with the CL group (P<0.05). Dietary inclusion of olive extract increased the relative abundance of intestinal Lactobacillus and Clostridium at genus level.Conclusion: Dietary supplementation with olive extract maslinic acid and hydroxytyrosol improved anti-oxidative and anti-inflammatory capacity, intestinal structure morphology, and increased the abundance of beneficial intestinal bacteria in weaned piglets challenged by LPS.

S-adenosylmethionine deficiency and TNF-α in lipopolysaccharide-induced hepatic injury

1998 ◽  
Vol 275 (1) ◽  
pp. G125-G129 ◽  
Author(s):  
Rajender K. Chawla ◽  
Walter H. Watson ◽  
Charles E. Eastin ◽  
Eun Y. Lee ◽  
Jack Schmidt ◽  
...  
Keyword(s):  
Liver Injury ◽  
De Novo ◽  
Normal Liver ◽  
Fold Increase ◽  
Saline Group ◽  
Saline Control ◽  
Control Group ◽  
Lps Challenge ◽  
Tnf Α ◽  
Factor Α

S-adenosylmethionine (Adomet) is a substrate for de novo synthesis of choline. Adomet deficiency occurs in certain types of liver injury, and the injury is attenuated by exogenous Adomet. Tumor necrosis factor-α (TNF-α) is also a mediator of these models of hepatotoxicity. We investigated the role of Adomet in lipopolysaccharide (LPS)-induced liver injury in rats made deficient in both Adomet and choline. Rats were maintained on either a methionine-restricted and choline-deficient (MCD) diet or a diet containing sufficient amounts of all nutrients [methionine and choline sufficient (MCS)] and then administered either LPS or saline. MCS-LPS rats had normal liver histology and no change in serum transaminases compared with the MCS-saline control group. MCD-saline rats had hepatosteatosis but no necrosis, and a five- to sevenfold increase in transaminases vs. the MCS-saline group. MCD-LPS rats additionally had hepatonecrosis and a 30- to 50-fold increase in transaminases. Exogenous Adomet administration to MCD-LPS rats corrected the hepatic deficiency of Adomet but not of choline, prevented necrosis but not steatosis, and attenuated transaminases. Serum TNF-α was sixfold higher in MCD rats even without LPS challenge and 300-fold higher with LPS challenge. Exogenous Adomet attenuated increased serum TNF-α in MCD-LPS rats.

scholarly journals Dietary Beta-Hydroxy Beta-Methyl Butyrate Supplementation Alleviates Liver Injury in Lipopolysaccharide-Challenged Piglets

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yehui Duan ◽  
Bo Song ◽  
Changbing Zheng ◽  
Yinzhao Zhong ◽  
Qiuping Guo ◽  
...  
Keyword(s):  
Liver Injury ◽  
Mrna Expression ◽  
Basal Diet ◽  
Control Group ◽  
Protective Effects ◽  
Ampk Signaling ◽  
Lps Challenge ◽  
Hepatic Energy Metabolism ◽  
Serum Aspartate Aminotransferase ◽  
Underlying Mechanisms

The current study was performed to investigate whether dietary β-hydroxy-β-methylbutyrate (HMB) could regulate liver injury in a lipopolysaccharide- (LPS-) challenged piglet model and to determine the mechanisms involved. Thirty piglets ( 21 ± 2   days   old , 5.86 ± 0.18   kg body weight) were randomly divided into the control (a basal diet, saline injection), LPS (a basal diet), or LPS+HMB (a basal diet + 0.60% HMB-Ca) group. After 15 d of treatment with LPS and/or HMB, blood and liver samples were obtained. The results showed that in LPS-injected piglets, HMB supplementation ameliorated liver histomorphological abnormalities induced by LPS challenge. Compared to the control group, the activities of serum aspartate aminotransferase and alkaline phosphatase were increased in the LPS-injected piglets ( P < 0.05 ). The LPS challenge also downregulated the mRNA expression of L-PFK, ACO, L-CPT-1, ICDH β, and AMPKα1/2 and upregulated the mRNA expression of PCNA, caspase 3, TNF-α, TLR4, MyD88, NOD1, and NF-κB p65 ( P < 0.05 ). However, these adverse effects of the LPS challenge were reversed by HMB supplementation ( P < 0.05 ). These results indicate that HMB may exert protective effects against LPS-induced liver injury, and the underlying mechanisms might involve the improvement of hepatic energy metabolism via regulating AMPK signaling pathway and the reduction of liver inflammation via modulating TLR4 and NOD signaling pathways.

scholarly journals Analysis of the physical activity effects and measurement of pro-inflammatory cytokines in irradiated lungs in rats

2012 ◽  
Vol 27 (3) ◽  
pp. 223-230 ◽  
Author(s):  
Renata Cristiane Gennari Bianchi ◽  
Eduardo Rochete Ropelle ◽  
Carlos Kiyoshi Katashima ◽  
José Barreto Campello Carvalheira ◽  
Luiz Roberto Lopes ◽  
...  
Keyword(s):  
Physical Activity ◽  
Western Blotting ◽  
Inflammatory Cytokines ◽  
Lower Lobe ◽  
Whole Body ◽  
Control Group ◽  
Western Blotting Analysis ◽  
Blotting Analysis ◽  
Tnf Α ◽  
Pro Inflammatory Cytokines

PURPOSE: To study if the pre-radiotherapy physical activity has radio-protective elements, by measuring the radio-induced activation of pro-inflammatory cytokines as interleukin-6 (il-6), transforming growth factor -β (tgf -β), tumor necrosis factor -α (tnf-α) and protein beta kinase β (ikkβ), through western blotting analysis. METHODS: A randomized study with 28 Wistar hannover rats, males, with a mean age of 90 days and weighing about 200 grams. The animals were divided into three groups: (GI, GII and GIII). GIII group were submitted to swimming for eight weeks (zero load, three times a week, about 30 minutes). Then, the groups (except the control group) were submitted to irradiation by cobalt therapy, single dose of 3.5 gray in the whole body. All animals were sacrificed by overdose of pentobarbital, according to the time for analysis of cytokines, and then a fragment of the lower lobe of the right lung went to western blotting analysis. RESULTS: The cytokines IKK β, TNF-α and IL-6 induced by radiation in the lung were lower in the exercised animals. However, exercise did not alter the radiation-induced increase in tgf-β. CONCLUSION: The results show a lower response in relation to inflammatory cytokines in the group that practiced the exercise pre-radiotherapy, showing that exercise can protect tissues from tissue damage due to irradiation.

l-Carnitine-induced amelioration of HFD-induced hepatic dysfunction is accompanied by a reduction in hepatic TNF-α and TGF-β1

2018 ◽  
Vol 96 (6) ◽  
pp. 713-725 ◽  
Author(s):  
Mabrouk Attia Abd Eldaim ◽  
Fatma Mohamed Ibrahim ◽  
Saher Hassan Orabi ◽  
Azza Hassan ◽  
Hesham Saad El Sabagh
Keyword(s):  
Protein Expression ◽  
High Density Lipoprotein ◽  
Body Mass ◽  
Density Lipoprotein ◽  
Basal Diet ◽  
Serum Levels ◽  
High Density ◽  
Control Group ◽  
Tnf Α ◽  
Tgf Β1

In this study, we evaluated the possible mechanisms through which l-carnitine ameliorates the adverse effects from obesity in rats, induced with a high-fat diet (HFD). For this, 56 albino Wister rats were randomly assigned to 7 groups. The control group was fed a basal diet and injected with saline. The second group was fed the basal diet and injected with l-carnitine (200 mg/kg body mass, by intraperitoneal injection; i.p.). The third group were fed the HFD. The fourth group was fed the HFD and injected with l-carnitine (200 mg/kg body mass, i.p.) for 8 weeks. The fifth group was fed the HFD for 10 weeks. The sixth group were fed the HFD for 10 weeks and were also injected with l-carnitine (200 mg/kg body mass, i.p.) during the final 2 weeks. The seventh group was fed the HFD diet for 8 weeks then the basal diet for 2 weeks. The HFD induced significantly increased levels of hyperglycemia, lipid peroxidation, pathological changes, TNF-α and TGF-β1 protein expression in hepatic tissue, food intake, body weight gain, serum levels of total and non-high-density lipoprotein cholesterol, ketone bodies, triacylglycerol, urea, creatinine, AST, and ALT. However, the HFD diet significantly decreased serum levels of high-density lipoprotein (HDL) and hepatic levels of reduced glutathione. l-Carnitine ameliorated the effects of the HFD on the above-mentioned parameters. This study indicated that l-carnitine had protective and curative effects against HFD-induced hepatosteatosis by reducing hepatic oxidative stress and protein expression of TNF-α and TGF-β1.

scholarly journals Effects of a Fusarium Toxin-Contaminated Maize Treated with Sodium Sulfite on Male Piglets in the Presence of an LPS-Induced Acute Inflammation

Toxins ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 419 ◽  
Author(s):  
Anh-Tuan Tran ◽  
Jeannette Kluess ◽  
Andreas Berk ◽  
Marleen Paulick ◽  
Jana Frahm ◽  
...  
Keyword(s):  
Body Weight ◽  
Acute Inflammation ◽  
Clinical Biochemistry ◽  
Sodium Sulfite ◽  
Clinical Chemistry ◽  
Redox Status ◽  
Blood Samples ◽  
Lps Challenge ◽  
Fusarium Toxin ◽  
Tnf Α

We investigated the effects of feeding sodium sulfite (SoS) treated uncontaminated and Fusarium contaminated maize in a porcine lipopolysaccharide (LPS) challenge model. Eighty piglets (7.59 ± 0.92 kg body weight [BW]) were equally assigned to one of four experimental diets containing 10% maize, either uncontaminated and untreated (CON−, 0.09 mg deoxynivalenol [DON]/kg diet) or uncontaminated and SoS-treated (CON+, wet-preserved with 5 g SoS/kg maize; 0.05 mg DON/kg diet), or prepared with 10% of a Fusarium contaminated maize containing mainly deoxynivalenol (DON), either contaminated and untreated (FUS−, 5.36 mg DON/kg diet), or contaminated and SoS-treated (FUS+, wet-preserved with 5 g SoS/kg maize; 0.83 mg DON/kg diet). At day 42 of experiment, ten pigs of each group were injected intraperitoneally with either 7.5 µg LPS/kg BW or placebo (0.9% NaCl). At 120 min after injection, blood samples were collected to analyse TNF-α, hematological profile, clinical biochemistry as well as the redox status. A significant increase in body temperature and cytokine TNF-α concentration was observed in the LPS-injected piglets. Results for hematology, clinical chemistry and redox status indicate no effects of SoS treatment, with exception of neutrophil counts being significantly more pronounced after feeding the SoS treated FUS maize. In conclusion, SoS treatment of maize did not modulate the LPS-induced acute inflammation.

Acute Lung Inflammation in Sickle Mice Is Mediated by Increase of CXC Chemokines and Matrix Metalloproteinases

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 2483-2483
Author(s):  
Carla Fernanda Franco-Penteado ◽  
Carolina Lanaro ◽  
Dulcinéia M Albuquerque ◽  
Ana Paula Gimenes ◽  
Luiz Augusto C Passos ◽  
...  
Keyword(s):  
Matrix Metalloproteinases ◽  
Lung Inflammation ◽  
Intranasal Administration ◽  
Pcr Analysis ◽  
Acute Chest Syndrome ◽  
Control Group ◽  
Mrna Levels ◽  
Acute Lung Inflammation ◽  
Lps Challenge ◽  
Tnf Α

Abstract Studies in vitro, and in vivo using animal models show that leukocytes play a key role in vasoocclusion and clinical research suggests that high leukocyte counts correlate with mortality, stroke and acute chest syndrome in sickle cell disease (SCD). Lungs are particularly vulnerable to vaso-occlusive events because of their anatomic features in SCD. Transgenic mice expressing exclusively human sickle hemoglobin (SS) are well-established models for the study of vascular inflammation. Previous studies have shown that systemic LPS challenge causes exaggerated inflammation, including increased serum and broncoalveolar lavage (BAL) TNF-α and IL-1 cytokines and sVCAM-1 in sickle mice. The aim of this study was to examine the contribution of acute airway inflammation in SCD using SS mice and the role of chemokines and matrix metalloproteinases (MMPs) in this process. Acute lung inflammation and injury were induced by intranasal administration of lipopolysaccharide (LPS, 50 μl of 250 μg/ml) in control (C57BL/6) and SS mice. The vehicle mice group received a similar volume of sterile PBS. BAL was performed 4 h after LPS challenge. qRT-PCR analysis was used to examine gene expression and ELISA protein production. The intranasal administration of LPS to mice triggered a huge influx of leukocytes (neutrophils, NS) in BAL of control and SS mice compared with the respective vehicle groups, but this influx was greater in SS mice, when compared with control mice (1.4 ± 0.06 vs 0.66 ± 0.12 WBCx106/BAL); p=0.0006, 1.06 ± 0.1 vs 0.40 ±0.12 NSx106/BAL; p=0.004, respectively). At baseline levels, KC and MIP-2 chemokines (functional homologues of human IL-8 in mice) are higher in BAL fluid of SS mice compared to control mice (186.6 ± 14.1 pg/ml vs 14.1 ± 5.8 pg/ml; 41.2 ± 7.9 pg/ml vs 11.4 ± 7.3 pg/ml, p=, respectively). Corresponding with influx of NS, lung lavage levels of KC and MIP-2 were significantly higher in SS BALF compared to control mice (2491 ± 454 pg/ml vs 798.1 vs 98.2 pg/ml; 1726 ± 307 pg/ml vs 887.3 ± 149.5 pg/ml, respectively). Enhanced levels of TNF-α were also observed at baseline and after LPS instillation compared to those of the control mice (20.8 ± 8.8 pg/ml vs 2.5 ± 1.6 pg/ml; 4250 ± 636 pg/ml vs 1585 ± 263 pg/ml, respectively). Instillation of LPS markedly increased KC, TNF-α, MMP-8, MMP-9 and TIMP-1 mRNA levels in the lungs of control and SS mice compared to animals that received PBS instead of LPS (Control, KC: 0.19 ± 0.047 vs 0.01 ± 0.005; TNF-α: 0.30 ± 0.07 vs 0.01 ± 0.002; MMP-8: 0.2 ± 0.06 vs 0.016 ± 0.004; MMP-9: 0.22 ± 0.03 vs 0.08 ± 0.01; TIMP-1: 0.32 ± 0.06 vs 0.09 ± 0.03); (SS, KC: 0.42 ± 0.1 vs 0.039 ± 0.02; TNF-α: 0.23 ± 0.025 vs 0.02 ± 0.007; MMP-8: 0.42 ± 0.06 vs 0.06 ± 0.03; MMP-9: 0.49 ± 0.11 vs 0.11 ± 0.05; TIMP-1: 0.49 ± 0.11 vs 0.09 ± 0.03). However, the LPS-induced KC, MMP-8 and MMP-9 expression was significantly higher in SS mice lung compared than that of the control group (p&lt;0.05). Lung MMP-2, MMP-12 and TIMP-2 gene expressions were similar in the PBS and LPS groups and were not significantly different between SS and control mice. Our results indicate that chemokines and MMPs are critically involved in the recruitment of neutrophils to the lung following LPS challenge, and suggest that these inflammatory mediators may play a role in the development of pulmonary diseases in SCD. The findings from this study provide further support to the claim that a proinflammatory state is present in SCD and have important implications for the pathophysiology of lung injury in SCD.

scholarly journals Diagnostic value of the CSF levels of D-Lactate and pro-inflammatory cytokines (TNF-alpha, IL-6, IL-8 and IL-17) in the patients with suspected nosocomial meningitis

2021 ◽  
Author(s):  
SY Goktas ◽  
AY Oral ◽  
E Yılmaz ◽  
EH Akalın ◽  
F Guvenc ◽  
...  
Keyword(s):  
Sensitivity And Specificity ◽  
Diagnostic Value ◽  
Tnf Alpha ◽  
Control Group ◽  
Combination Model ◽  
Nosocomial Meningitis ◽  
Tnf Α ◽  
Csf Levels ◽  
Lactate Levels ◽  
Pro Inflammatory Cytokines

Introduction: This study aims to determine the diagnostic value of IL-6, IL-8, IL-17, TNF-α and D-lactate levels in the cerebrospinal fluid (CSF) in nosocomial meningitis. Methods: CSF levels of cytokines and D-lactate were compared across 29 episodes who were diagnosed with nosocomial meningitis, 38 episodes with pleocytosis but without meningitis and 54 control subjects. Results: CSF levels of IL-6, IL-8, and D-lactate were higher in the group with nosocomial meningitis compared to the control group and to the group with pleocytosis without meningitis (p<0.05). For the levels of IL-6, when the threshold was considered to be > 440 pg/mL, the sensitivity and specificity were 55.17% and 94.74%, respectively. For IL-8 levels, when the threshold was considered to be >1249 pg/mL, the sensitivity and specificity were 44.83% and 84.21%, respectively. In the patients with nosocomial meningitis, when the threshold of D-lactate levels was considered to be >1.05µmol/mL, the sensitivity and specificity were found to be 75.86% and 63.16%, respectively. In the pleocytosis without meningitis CSF samples and in the CSF samples diagnosed with nosocomial meningitis, the highest AUC was calculated for triple combination model of IL-6, IL-8, and D-lactate levels (AUC= 0.801, p<0.001), and double combination model IL-6 and IL-8 (AUC= 0.790) (p<0.001). Conclusion: In our study, we have concluded that IL-6, IL-8 and D-lactate levels could be diagnostic markers for nosocomial meningitis.

scholarly journals The Regulatory Role of Different Exercises in Irisin, Heat Shock Protein 70 and Some Biochemical Parameters

2021 ◽  
Author(s):  
Taner Akbulut ◽  
Vedat Cinar ◽  
Suleyman Aydin ◽  
Meltem Yardim
Keyword(s):  
Heat Shock ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Biochemical Parameters ◽  
Exercise Program ◽  
Exercise Group ◽  
Human Organism ◽  
Control Group ◽  
Exercise Programs ◽  
Blood Samples

Background: It is known that exercise causes many changes in the human organism. Understanding the metabolisms underlying these changes is an important issue. The aim of the study was to determine the effects of different and regularly applied exercise programs on irisin, heat shock protein 70 and some biochemical parameters. Methods: 120 male university students participated in the study. Participants were divided into 4 equal groups as control (C), resistance exercise group (RE), high intensity interval (HIIT) and aerobic exercise group (AE). While the control group did not perform any exercise, the pre-determined exercise programs were applied to the other groups for 8 weeks and 3 days in a week. Blood samples were taken from all participants before and after the exercise program. Cholesterol, HDL and LDL cholesterol, triglyceride, creatine kinase (CK), lactate dehydrogenase (LDH), Irisin and Heat shock protein 70 (HSP70) levels were analyzed in blood samples. Results: It is determined that there are significant differences in pre-posttest values ​​of the AE group’s LDH, cholesterol, HDL, Triglyceride and HSP 70 levels, HIIT group’s CK, LDH, Cholesterol, HDL, Triglyceride, Irisin and HSP70 levels and RE group’s CK, LDH, Cholesterol, LDL, Triglyceride and irisin levels (p<0.05). Conlusions: It can be said that; exercise can correct abnormalities in lipid profile, changes in HSP70 levels may vary depending on muscle damage, the increase of irisin due to exercise.

scholarly journals Dietary quercetin ameliorates TPT-induced hepatic oxidative damage and apoptosis in zebrafish

2021 ◽  
Author(s):  
Chunnuan Zhang ◽  
Yuheng Wang ◽  
Hongtao Ren ◽  
Junhui Wang ◽  
Dongxue Jiang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Oxidative Damage ◽  
Basal Diet ◽  
Control Group ◽  
Antioxidant Enzyme Activities ◽  
Mrna Levels ◽  
Gene Expressions ◽  
Apoptotic Gene ◽  
Tnf Α ◽  
Quercetin Treatment

Abstract The objective of this study was to determine the effects of quercetin on oxidative stress and apoptosis induced by TPT in zebrafish. 240 fish were divided into 4 groups with three repeats. D1: fish fed with the basal diet as the control group. D2: fish fed with basal diet and exposed in 10 ng/L TPT. D3: fish fed diets containing 100 mg/Kg quercetin and exposed in 10ng/L TPT. D4: fish fed diets containing 100 mg/Kg quercetin. The results showed that quercetin could ameliorate oxidative stress, which decreased MDA, NO levels and improved antioxidant enzyme activities. The key apoptotic gene expressions, including caspase3, Bax and caspase9 mRNA expression were significantly induced by TPT exposure as compared with the control group, while notably decreased the Bcl-2 gene. However, dietary quercetin prevented a significant increase in Bax, caspase3 and caspase9 mRNA levels induced by TPT exposure, but increased Bcl-2 mRNA levels. The results of our study also demonstrated that 10 ng/L TPT significantly up-regulated TNF-α, IL-1β, IL-8, and NF-kB p65 gene expression and down-regulated IL-10 and IkB expression compared to the control group. However, TPT-induced inflammation was significantly mitigated in the quercetin treatment group. In conclusion, our findings suggested that quercetin might alleviate hepatic oxidative damage and apoptosis induced by TPT.

Sign in / Sign up

Export Citation Format

Share Document