Amla (Emblica officinalis) improves hepatic and renal oxidative stress and the inflammatory response in hypothyroid female wistar rats fed with a high-fat diet

2018 ◽  
Vol 29 (2) ◽  
pp. 175-184 ◽  
Author(s):  
P. Rajaa Muthu ◽  
Zachariah Bobby ◽  
P. Sankar ◽  
V. Vickneshwaran ◽  
Sajini Elizabeth Jacob

AbstractBackground:We investigated the protective effects of amla (Emblica officinalis) on the pathogenesis of oxidative stress (OS) and inflammatory response in hypothyroid rats fed with a high-fat diet (HFD) as an experimental model of hypothyroidism (HT) with obesity.Methods:A total of 80 female wistar rats (5-months-old) were divided into eight different groups. Propylthiouracil (PTU) and HFD were used to induce the experimental HT and obesity, respectively. The euthyroid and hypothyroid rats were fed either normal chow or HFD with and without amla extract (AE, 100 mg/kg bw/day) for 6 weeks. The blood and tissues, liver and kidney OS and inflammatory parameters were studied using appropriate biochemical and molecular techniques.Results:PTU and HFD per se caused OS and inflammatory response as evidenced by increased plasma MDA, TNF-α, CRP and GPx in association with decreased levels of TAS and reduced glutathione (GSH). The proteomic analysis revealed that the expressions of pERK, pP38, TNF-α, IL6, COX2 and NOX-4 were up-regulated in the liver and kidney of these rats. In addition, all these metabolic derangements were further augmented when HT was followed by the addition of HFD. This suggested that there was a synergism between HT and the intake of HFD on the development of OS and inflammatory response.Conclusions:The treatment with amla fruit extract significantly restored the redox imbalance and inflammatory signaling and ameliorated OS and inflammatory response, suggesting the use of this natural compound as an alternative remedy or adjuvant for the management of metabolic complications concomitant with HT.

2019 ◽  
Vol 10 (7) ◽  
pp. 4036-4045 ◽  
Author(s):  
Bárbara Pereira da Silva ◽  
Renata Celi Lopes Toledo ◽  
Marcella Duarte Villas Mishima ◽  
Maria Eliza de Castro Moreira ◽  
Christiane Mileib Vasconcelos ◽  
...  

The study investigated the influence of chia consumption on inflammation, oxidative stress, and lipid profiles in female ovariectomized rats fed a high-fat diet.


Author(s):  
Suguna Periyanayagam ◽  
Geetha Arumugam ◽  
Aruna Ravikumar ◽  
Vijaiyan Siva Ganesan

AbstractInflammasomes are protein complexes that mediate the process of inflammation and tissue injury by regulating the level of cytokine production. Pancreatitis is a major gastrointestinal disorder characterized by painful inflammation in the pancreas. The aim of this study was to evaluate whether thymoquinone (TQ) exerts anti-inflammatory activity by influencing the expression of the apoptosis-associated speck-like protein (ASC) complex of NOD-like receptor pyrin domain containing 3 (NLRP3) inflammasomes in rats subjected to experimental pancreatitis.Male albino Wistar rats were randomly separated into four groups. Rats in groups 1 and 2 were fed with a normal diet for 90 days, and rats in groups 3 and 4 were administered with ethanol (EtOH) 8–12 g/kg/day orally and fed with a high-fat diet (HFD) for 90 days. In addition, rats in groups 2 and 4 were administered with 100 mg/kg body weight of TQ from the 31st day. The serum lipase (L)/amylase (A) ratio; the oxidative stress markers; the GSH/GSSG ratio; the mRNA expression of ASC, caspase-1, IL-1β, IL-18, and TNF-α; and the protein expression of ASC and caspase-1 in the pancreas were assessed.We observed a significant increase in the serum L/A ratio and oxidative stress, a decrease in the GSH/GSSG ratio, and a GST activity in EtOH- and HFD-fed rats. The mRNA expression of IL-1β, IL-18, and TNF-α was significantly reduced in TQ-coadministered rats than that in EtOH- and HFD-fed rats. The upregulation of mRNA and the protein expression of ASC and caspase-1 were significantly reduced in TQ-coadministered rats.TQ exerts the anti-inflammatory activity probably by downregulating the ASC expression to minimize the maturation of proinflammatory cytokines.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Barbara Pereira da Silva ◽  
Marcella Duarte Villas Mishima ◽  
Renata Celi Lopes Toledo ◽  
Maria Eliza de Castro Moreira ◽  
Neuza Costa ◽  
...  

Abstract Objectives The objective is to investigate the influence of chia consumption on inflammation, oxidative stress, and blood lipid profile in adult female ovariectomized Wistar rats fed high-fat diet Methods Forty ovariectomized and 40 intact (SHAM) rats were allocated into 8 groups (n = 10), and received one of the following four diets: standard diet (ST); standard diet + chia (STC); high-fat diet (HF); high-fat diet + chia (HFC) during 126 days. Biochemical parameters and biomarkers of lipid peroxidation, inflammation, and oxidative stress were evaluated. The mRNA expression of proteins involved in inflammation such as PPAR-α, NFκB, TNF-α and Zn-SOD1 were analyzed, as well as TNF-α and IL-1β levels. The results were subjected to ANOVA at 5% probability. Post hoc Duncan test was carried out to compare means among the groups. Test-t was used to compare the same diet group with ovariectomy or not. Results Chia intake increased HDL-c and reduced LDL-c levels. Among the ovariectomized groups, the animals fed chia showed higher SOD mRNA expression and activity. The consumption of the HF did not alter the total antioxidant capacity. In addition, chia consumption did not improve this parameter. Nevertheless, plasma catalase concentration was higher in STC group. MDA concentration was higher in all groups fed HF. PPAR-α mRNA expression was higher in the STC group. Besides, high fat diet consumption was able to reduce the PPAR-α mRNA expression. The NFκB mRNA expression were lower in STC groups. However, mRNA expression and the protein levels of TNF-α were lower in the rats fed standard diet. Nevertheless, the protein levels of IL-1β were lower in the rats fed standard diet and high fat diet with chia. Conclusions In general, ovariectomy did not influence inflammatory and oxidative stress parameters. Chia intake during 126 days was able to improve antioxidant activity, increasing SOD expression, PPAR-α expression, catalase concentration, and HDL-c levels in adults female rats submitted or not to ovariectomy and fed a standard or a high-fat diet. In addition, chia consumption decrease inflammatory markes, IL-1β and LDL-c concentration. Funding Sources Foundation for Research Support of Minas Gerais (FAPEMIG, Brazil); Coordination for the Improvement of Higher Education Personnel (CAPES, Brazil), and the National Counsel of Technological and Scientific Development (CNPq, Brazil). Supporting Tables, Images and/or Graphs


2013 ◽  
Vol 83 (1) ◽  
pp. 26-35 ◽  
Author(s):  
Luciana Simão Carmo ◽  
Marcelo Macedo Rogero ◽  
Mayara Cortez ◽  
Monica Yamada ◽  
Patrícia Silva Jacob ◽  
...  

An excessive consumption of a high-fat diet (HFD) results in becoming overweight or obese, which triggers a chronic inflammatory condition that is associated with a high white blood cell count. Because of the potential for yerba maté (Ilex paraguariensis) (YM) to impact obesity, this study aimed to investigate the effects of YM consumption on the hematological response and on the production of interleukin (IL)-1α, IL-6, tumor necrosis factor (TNF)-α, and IL-10 by bone marrow cells from Wistar rats fed a HFD. Male Wistar rats were fed a control (CON) or HFD diet for twelve weeks. At the end of this period, the rats received YM (1 g/kg/day body weight) for 4 weeks. After euthanasia, hemograms and myelograms were evaluated, while the bone marrow cells were cultured in the presence or absence of lipopolysaccharide (LPS) to evaluate the production of IL-1α, IL-6, TNF-α, and IL-10. The consumption of YM reduced the body weight, the body adiposity, and the cholesterol levels in HFD-fed rats. Bone marrow cells from the HFD group produced more IL-1α, IL-6, and TNF-α, and less IL-10, when compared to cells from the control group, and YM consumption reduced the IL-1α, IL-6, and TNF-α production by the cells. However, cells from the HFD rats that were stimulated with LPS increased their IL-1α, IL-6, and TNF-α production, but YM consumption did not change this result. In summary, the consumption of YM affects the production of IL-1α, IL-6, and TNF-α by bone marrow cells, promotes weight loss, decreases the number of white blood cells, and significantly improves serum cholesterol level in HFD-fed rats. However, the bone marrow cells from the HFD+YM-fed rats challenged with LPS did not show improvement in the inflammatory response compared to the cells from animals fed only a HFD that were also challenged with LPS.


2020 ◽  
Author(s):  
Xiaoling Wu ◽  
Xinyu Zou ◽  
Mi Zhang ◽  
Haiqiang Hu ◽  
Xueliang Wei ◽  
...  

Abstract Background: Osteocalcin (OCN), as an energy-regulating hormone, involves in preventing nonalcoholic steatohepatitis. Laying hens have been used as an animal model for investigating liver function and related metabolic disordersas that the synthesis of fat in laying hens is much faster than in mammals with limited adipose tissue. The aim of this study was to investigate the effects of OCN on fatty liver hemorrhagic syndrome (FLHS) in aged laying hens. Methods: Thirty 68-week-old White Plymouth laying hens were randomly assigned into conventional single-bird cages, and the cages were randomly allocated into one of three treatments: normal diet (ND + vehicle , ND+V), high-fat diet (HFD + vehicle, HFD+V), and HFD + OCN (3 μg/bird, 1 time/2 days, i.m.) for 40 days. At experimental day 30, oral glucose tolerance tests (OGTT) and insulin tolerance tests (ITT) were performed. At the end of experiment, the hens were euthanized followed blood collection. The plasma aspartate transaminase (AST), alkaline phosphatase (ALP), total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured using an automatic biochemistry analyzer. Pathological changes in the liver were examined under both light and transmission electron microscopes. The plasma inflammatory factors including interleukin-1 (IL-1), IL-6, and tumor Necrosis Factor-alpha (TNF-α) were analyzed by ELISA, and the gene expressions of these inflammatory factors in the liver were analyzed by Real-time PCR. And oxidative stress was evaluated using Malondialdehyde (MDA) and Glutathione peroxidase (GSH-Px) assay kits. Results: The results showed HFD hens had more severe liver haemorrhage and fibrosis than ND hens. The ultra-microstructural examination showed that hepatocytes of HFD hens appeared necrotic pyknosis associated with great intracellular electron, mitochondrial swelling, shrunk nucleus and absence of autolysosomes. OCN mitigated these pathological changes by improved HFD hens’ insulin resistance via alleviating the glucose intolerence and improving insulin sensitivity; inhibited HFD-induced oxidative stress as evidenced by decreased liver concentrations of MDA but increased GSH-Px; and reduced the inflammatory reaction with reducing blood IL-6 and TNF-α concentrations and mRNA expressions. Conclusion: These results suggest a high-fat diet promotes the FLHS development in aged hens, while OCN prevents the FLHS process through inhibiting insulin resistance, inflammatory reaction, oxidative stress and fibrosis, and acting autophagy.


Author(s):  
Bheemshetty S. Patil ◽  
Pallavi S. Kanthe ◽  
Chandramouli R. Reddy ◽  
Kusal K. Das

Background: Dietary high fat possibly causes oxidative stress. Also, it alters the pathophysiology of metabolically active myocardial tissues and vascular architecture. Emblica officinalis contains a potential antioxidant that counteracts oxidative stress and possibly maintains vascular integrity. Objective: To assess the effect of ethanolic extract of Emblica officinalis (EEO) on High Fat Diet (HFD) induced changes in vascular chemistry and histopathology of the cardiovascular system in male albino rats. Materials and Methods: Ethanolic extract of Emblica Officinalis (EEO) was prepared and phytochemical analysis was done. Rats were divided into four groups, having six rats in each group as follows: group 1- Control (20% fat); group 2 (20% fat+ EEO 100 mg/kg/b w); group 3 (30% fat) and group 4 (30% fat + EEO 100 mg/kg/b w). Dietary and EEO supplementation was continued for 21 days. Gravimetric and oxidative stress markers like MDA, NO, antioxidants like Vitamin C and E, and molecular marker (NOS3) were evaluated. Histopathological analysis was done on the myocardium and elastic artery along with measurement of coronary arterial wall thickness and lumen diameter. One way ANOVA was done for analysis of data. Results: High fat diet showed a significant increase in MDA, decrease of NO with unaltered NOS3 protein in rats fed with high fat diet, which indicate possible alteration of vascular pathophysiology. Supplementation of EEO showed an ameliorating effect on high fat diet induced oxidative stress. These results were further corroborated with findings of a histopathological study on the myocardium, elastic artery and coronary arterial architecture. Conclusion: Ethanolic extract of Emblica officinalis (EEO) indicates its cardioprotective efficacy against rats fed with high fat diet.


2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Ying-ru Su ◽  
Yu-pu Hong ◽  
Fang-chao Mei ◽  
Chen-yang Wang ◽  
Man Li ◽  
...  

Objective. For patients with severe acute pancreatitis (SAP), a high body mass index (BMI) increases the possibility of infection derived from the intestine. In this study, we evaluate whether TAK242 can alleviate severe acute pancreatitis-associated injury of intestinal barrier in high-fat diet-fed rats. Methods. A SAP model was established by retrograde injection of 5% sodium taurocholate into the biliary-pancreatic duct. Thirty Sprague-Dawley (SD) adult rats were randomly divided into five groups: standard rat chow (SRC) normal (SN), SRC SAP (SAP), high-fat diet normal (HN), HFD SAP (HSAP), and TLR4 inhibitor pretreatment HFD SAP (HAPT) groups. Intraperitoneal injection of 3 mg/kg TAK242 was administered 30 minutes before SAP model establishment in the HAPT group. Rats were sacrificed 12 hours after SAP modeling, followed by blood and pancreatic and distal ileum tissue collection for further analyses. Changes in the pathology responses of the rats in each group were assessed. Result. Analyses of serum amylase, lipase, cholesterol, triglyceride, IL-1β, IL-6, DAO, and serum endotoxin as well as tight junction protein expression including zonula occluden-1 and occludin indicated that high-fat diet aggravated SAP-induced intestinal barrier injury via increasing inflammatory response. In addition, the level of necroptosis was significantly higher in the SAP group compared with the SN group while the HSAP group exhibited more necroptosis compared with the SAP group, indicating the important role of necroptosis in pancreatitis-associated gut injury and illustrating that high-fat diet aggravated necroptosis of the ileum. Pretreatment with TLR4 inhibitor significantly alleviated inflammatory response and reduced necroptosis and level of oxidative stress while improving intestinal barrier function. Conclusion. High-fat diet aggravated SAP-induced intestinal barrier injury via inflammatory reactions, necroptosis, and oxidative stress. Inhibition of TLR4 by TAK242 reduced inflammation, alleviated necroptosis, and lowered the level of oxidative stress and then protected the intestinal barrier dysfunction from SAP in high-fat diet-fed rats.


Medicina ◽  
2020 ◽  
Vol 56 (9) ◽  
pp. 484
Author(s):  
Rόisín C. Thomas ◽  
Ramiar Kheder ◽  
Hasanain Alaridhee ◽  
Naomi Martin ◽  
Cordula M. Stover

Background and objectives: Overnutrition leads to a metabolic and inflammatory response that includes the activation of Complement. Properdin is the only amplifier of complement activation and increases the provision of complement activation products. Its absence has previously been shown to lead to increased obesity in mice on a high fat diet. The aim of this study was to determine ways in which properdin contributes to a less pronounced obese phenotype. Materials and Methods: Wild type (WT) and properdin deficient mice (KO) were fed a high-fat diet (HFD) for up to 12 weeks. Results: There was a significant increase in liver triglyceride content in the KO HFD group compared to WT on HFD. WT developed steatosis. KO had an additional inflammatory component (steatohepatitis). Analysis of AKT signalling by phosphorylation array supported a decrease in insulin sensitivity which was greater for KO than WT in liver and kidney. There was a significant decrease of C5L2 in the fat membranes of the KO HFD group compared to the WT HFD group. Circulating microparticles in KO HFD group showed lower presence of C5L2. Expression of the fatty acid transporter CD36 in adipose tissue was increased in KO on HFD and was also significantly increased in plasma of KO HFD mice compared to WT on HFD. CD36 was elevated on microparticles from KO on HFD. Ultrastructural changes consistent with obesity-associated glomerulopathy were observed for both HFD fed genotypes, but tubular strain was greater in KO. Conclusion: Our work demonstrates that complement properdin is a dominant factor in limiting the severity of obesity-associated conditions that impact on liver and kidney. The two receptors, C5L2 and CD36, are downstream of the activity exerted by properdin.


2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Suparmi Suparmi ◽  
Minidian Fasitasari ◽  
Martanto Martosupono ◽  
Jubhar Christian Mangimbulude

Sodium nitrate (NaNO2) widely used as food additive for coloring and preserving meat has been reported to induce oxidative stress and cause histopathologic changes, nitrosative tissue damage, and lipid peroxidation in liver and kidney. Therefore, the present study compared the curative effect of chlorophyll fromSauropus androgynus(L) Merr and Cu-chlorophyllin as antioxidant in NaNO2-induced female Wistar rats based on haematological, serum biochemical, and histological evaluation. Thirty male Wistar rats were randomly assigned into six groups of five rats each. NaNO2were given at a subacute dose of 50 mg/kg bw intraperitoneally for 10 days. Chlorophyll fromS. androgynusand Cu-chlorophyllin from K-Liquid™ were given in the following 14 days at the two doses: 0,016 mg/mL and 0.008 mg/mL. NaNO2exposure resulted in significant reductions (p<0.05) in values of packed cell volume (PCV), haemoglobin (Hb) concentration and red blood cell (RBC) count, transferrin, and ferritin and elevation in malondialdehyde (MDA) level and schistocytes percentage with insignificant reductions in serum albumin and transferrin levels. Histology of kidney and liver were changed insignificantly (p>0.05) to normal values. Chlorophyll fromS. androgynusand Cu-chlorophyllin possess antioxidant potentials to protect against toxicities induced by sodium nitrate.


2018 ◽  
Vol 11 (1) ◽  
pp. 2146-2154
Author(s):  
Osebhahiemen Happiness Ojemekele ◽  
Ehimwenma Sheena Omoregie

Hyperlipidaemia is a well documented risk factor for cardiovascular disease, a major cause of mortality world-wide. Chrysophyllum albidum (white star apple) has several medicinal properties.  Ingestion of the fruits has been found to lower lipid levels in the body, due to its high fibre content. Research works have shown that several parts of the plant are highly medicinal. The aim of this study was to evaluate the antihyperlipidaemic property of methanol leaf extract of Chrysophyllum albidum in Wistar rats fed with a high fat diet. Thirty male Wistar rats weighing between 130g-150g were distributed into five groups of six animals each. Group 1 received normal fat diet (NFD). Group 2 received high fat diet (HFD; Grower mash supplemented with 20% beef tallow). Group 3 received HFD and a standard lipid lowering drug, orlistat (20mg/kg body weight, p.o).  Animals in group 4 and 5 were fed on HFD and received methanol leaf extract of Chrysophyllum albidum, 250mg/kg and 500mg/kg, p.o respectively. The administration was carried out for 56 days. On the 57th day, animals were sacrificed by cervical dislocation. Organs were harvested and blood samples were collected for biochemical analyses. Results showed that the administration of HFD increased the total cholesterol, LDL-Cholesterol, triglycerides levels and decreased the HDL- cholesterol levels significantly (p <0.05). Simultaneous administration of Chrysophyllum albidum extract significantly (p<0.05) reduced the total cholesterol, LDL-Cholesterol, triglycerides levels and increased HDL- Cholesterol. Final body weights of animals that received Chrysophyllum albidum extract were significantly (p<0.05) lower than final body weights of animals in groups 2 (negative control). Results from Histopathology revealed inflammation of the liver and kidney of rats in group 2 (negative control). On the other hand, rats that received orlistat and Chrysophyllum albidum extract had normal liver and kidney architecture. It was concluded that Chrysophyllum albidum extract showed antihyperlipidemic effect in rats fed with beef tallow supplemented diet.  


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