Effects of chia (Salvia hispanica L.) on oxidative stress and inflammation in ovariectomized adult female Wistar rats

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.

2021 ◽  
Vol 12 (7) ◽  
pp. 3069-3082
Author(s):  
Marcella Duarte Villas Mishima ◽  
Luiz Carlos Maia Ladeira ◽  
Bárbara Pereira da Silva ◽  
Renata Celi Lopes Toledo ◽  
Thomás Valente de Oliveira ◽  
...  

The combination of ovariectomy with high fat diet consumption, in this study, affected biometric parameters, oxidative stress, mineral content and ATPase pump activity, while chia consumption had positive effects on these factors.


Author(s):  
Marcella Duarte Villas Mishima ◽  
Bárbara Pereira da Silva ◽  
Renata Celi Lopes Toledo ◽  
Neuza Maria Brunoro Costa ◽  
Hércia Stampini Duarte Martino

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 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


Author(s):  
Suellen Ribeiro da Silva Scarton ◽  
Felipe Tsuzuki ◽  
Marina Trevizan Guerra ◽  
Dayane Priscila dos Santos ◽  
Aldair Casagrande dos Santos ◽  
...  

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260546
Author(s):  
Mary J. Obayemi ◽  
Christopher O. Akintayo ◽  
Adesola A. Oniyide ◽  
Ayodeji Aturamu ◽  
Olabimpe C. Badejogbin ◽  
...  

Background Adipose and hepatic metabolic dysfunctions are critical comorbidities that also aggravate insulin resistance in obese individuals. Melatonin is a low-cost agent and previous studies suggest that its use may promote metabolic health. However, its effects on some comorbidities associated with obesity are unknown. Herein, we investigated the hypothesis that melatonin supplementation would attenuate adipose-hepatic metabolic dysfunction in high fat diet (HFD)-induced obesity in male Wistar rats. Materials and methods Twenty-four adult male Wistar rats (n = 6/group) were used: Control group received vehicle (normal saline), obese group received 40% high fat diet, melatonin-treated group received 4 mg/kg of melatonin, and obese plus melatonin group received 40% HFD and melatonin. The treatment lasted for 12 weeks. Results HFD caused increased food intake, body weight, insulin level, insulin resistance and plasma and liver lipid but decreased adipose lipid. In addition, HFD also increased plasma, adipose and liver malondialdehyde, IL-6, uric acid and decreased Glucose-6-phosphate dehydrogenase, glutathione, nitric oxide and circulating obestatin concentration. However, these deleterious effects except food intake were attenuated when supplemented with melatonin. Conclusion Taken together, the present results indicate that HFD exposure causes adipose-hepatic metabolic disturbance in obese animals, which are accompanied by oxidative stress and inflammation. In addition, the present results suggest that melatonin supplementation attenuates adipose-hepatic metabolic dysfunction, accompanying obesity by suppression of oxidative stress/inflammation-dependent mechanism and increasing circulating obestatin.


Author(s):  
Archana Lohiya ◽  
Vinod Kumar ◽  
J.S. Punia

Imidacloprid is a neonicotinoid insecticide and has been extensively used as a crop pest and in pet flea control programme. In the present study, the effects of imidacloprid on ovary and uteri tissue was analyzed in adult female Wistar rats at two dose levels (19 and 38 mg/kg/day) administered orally for 10, 20 and 30 days. Effects were compared with respective control animals administered daily with 2% gum acacia. Parameters undertaken were organ weight, levels of cytoplasmic and membrane proteins, oxidative stress parameters viz. activities of SOD, GPx and levels of GSH and MDA and histopathological changes. IMI (38 mg/kg, 30 days) reduced cytoplamic proteins in both ovaries and uteri whereas this dose reduced membrane protein in ovaries only. IMI (38 mg/kg, 20 and 30 days) decreased SOD enzyme in both ovaries and uteri and GSH-Px levels in ovaries only. The GSH-Px levels were also seen with decreased levels in uteri with IMI (38 mg/kg) for 30 days. IMI (38 mg/kg, 20 and 30 days) induces degenerative changes in ovaries of rats. Hence, it is concluded from the present studies that administration of higher doses (38 mg/kg/day) of IMI for 20 and 30 days generated oxidative stress in ovaries and uteri of female rats.


2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Daiane Figueiredo Rosa ◽  
Mariáurea Matias Sarandy ◽  
Rômulo Dias Novaes ◽  
Mariella Bontempo Freitas ◽  
Maria do Carmo Gouveia Pelúzio ◽  
...  

The wound-healing process is complex and remains a challenging process under the influence of several factors, including eating habits. As improper diets may lead to disorders such as dyslipidemia, insulin resistance, and chronic inflammation, potentially affecting the tissue ability to heal, we decided to investigate the effect of a high-fat diet and alcohol intake on the inflammatory process and skin wound healing in Wistar rats. Male rats (n=30) were individually housed in cages with food and water ad libitum (registration number 213/2014). After anesthesia, at day 40, three circular wounds (12 mm diameter) were made on the back of each animal, which were then randomly assorted into five treatment groups: C1 (control 1)—water via gavage and standard chow diet; C2 (control 2)—water (no gavage) and standard chow diet; AL (alcohol)—water (no gavage) and alcohol (40%) via gavage and standard chow diet; HF (high fat)—water (no gavage) and high-fat diet (50%); and HF + AL (alcohol/high fat)—water (no gavage), alcohol (40%) via gavage, and high-fat diet. Animals were treated for 61 days. Every seven days, the area and the rate of wound contraction were evaluated. Tissue samples were removed for histopathological analysis and biochemical analyses. Our results showed that wound contraction was not complete in the HF + AL rats. Two specific indices of wound-healing impairment (total cell number and levels of the inflammatory cytokine TGF-β) were increased in the HF + AL rats. We also observed decreased type I and III collagen fibers in the HF, AL, and HF + AL groups and increased oxidative stress markers in the same groups. We suggest that a high-fat diet combined with alcohol intake contributed to delayed skin wound healing through increase of the inflammatory phase and promoting oxidative stress, which may have led to morphological alterations and impaired matrix remodeling.


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