Determining the Role of the Ethanolic Leaf Extract of Diodia sarmentosa as a Free Radical Scavenger, and an Antioxidant in High Fat Diet Fed Wistar Rats

2021 ◽  
pp. 108-118
Author(s):  
Stephen Chinedumije Korie ◽  
Tobias I. Ndubuisi Ezejiofor
Keyword(s):  
Free Radical ◽  
High Fat Diet ◽  
Wistar Rats ◽  
Leaf Extract ◽  
Free Radical Scavenger ◽  
Radical Scavenger ◽  
High Fat ◽  
Ethanolic Leaf Extract

scholarly journals Free Radical Scavenging and Antioxidant Potential of Ethanolic Leaf Extract of Diodia sarmentosa on High Fat Fed Wistar Rats

2020 ◽  
pp. 54-63
Author(s):  
Ezejiofor Tobias I. Ndubuisi ◽  
Korie Stephen Chinedumije ◽  
Peter Chukwudi
Keyword(s):  
Nitric Oxide ◽  
Antioxidant Enzymes ◽  
Free Radicals ◽  
Free Radical ◽  
Wistar Rats ◽  
Leaf Extract ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
High Fat ◽  
Ethanolic Leaf Extract

Diodia sarmentosa (Sw) commonly known as Zimbabwe flora or Tropical button weed is a straggling or procumbent perennial herb which grows in evergreen forest, riverine vegetation and bush land. It has been used traditionally for the treatment of ulcer, diabetes and other ailments. This study investigated the Free radical scavenging and antioxidant potential of ethanolic leaf extract of Diodia sarmentosa on high fat fed wistar rats. Thirty (30) male wistar rats (150 g-200 g) were divided into five (5) groups: Negative control rats, Positive control rats, Low dose extract rats treated with 250 mg/kg, High dose extract rats treated with 500mg/kg of the extract, and Standard antihyperlipidaemic drug rats treated with 5 mg/kg of Simvastatin. High fat diet was fed to the rats with Ghee and Coconut oil in the ratio of 3:1 for six (6) weeks, and administration of the treatments started from the 3rd week till the 6th week. The free radical scavenging and antioxidant potentials of Diodia sarmentosa was determined by assessing parameters like nitric oxide radical, hydroxyl radical, malondialdehyde (MDA), Superoxide dismutase (SOD), Catalase (CAT), Glutathione peroxidase (GPx) and Glutathione S-transferase (GST) in the serum of the test rats. Diodia sarmentosa scavenged free radicals In vitro by inhibiting Nitric oxide and Hydroxyl radicals in a concentration-dependent manner, showing an inhibitory concentration at 50% (IC50) of 907.17 µg/ml ± 45.36 and 2173.44 µg/ml ± 100.11 respectively. Results obtained showed antioxidant enzymes like SOD, GPx and CAT in the serum of the test rats were significantly increased (p<0.05) by both doses of the extract when compared to the PC group and was similar to the standard drug used. GST activity was decreased in the serum by both doses of the extract, this decrease was not significant (p>0.05), while Malondialdehyde level was significantly decreased (p<0.05) by both doses of the extract in the serum of the tests rats. Diodia sarmentosa has antioxidants potentials because of its ability to scavenge free radicals, replenish antioxidant enzymes and reduce lipid peroxidation.

scholarly journals Dimeric Histidine as a Novel Free Radical Scavenger Alleviates Non-Alcoholic Liver Injury

Antioxidants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1529
Author(s):  
Zizhen Zhao ◽  
Chen Fu ◽  
Yuping Zhang ◽  
Ailing Fu
Keyword(s):  
Free Radicals ◽  
Free Radical ◽  
Liver Injury ◽  
High Fat Diet ◽  
Free Radical Scavenger ◽  
Radical Scavenger ◽  
Common Disease ◽  
Alcoholic Liver Injury ◽  
High Fat ◽  
Free Radical Damage

Non-alcoholic liver injury (NLI) is a common disease worldwide. Since free radical damage in the liver is a crucial initiator leading to diseases, scavenging excess free radicals has become an essential therapeutic strategy. To enhance the antioxidant capacity of histidine, we synthesized a protonated dimeric histidine, H-bihistidine, and investigated its anti-free radical potential in several free-radical-induced NLI. Results showed that H-bihistidine could strongly scavenge free radicals caused by H2O2, fatty acid, and CCl4, respectively, and recover cell viability in cultured hepatocytes. In the animal model of nonalcoholic fatty liver injury caused by high-fat diet, H-bihistidine reduced the contents of transaminases and lipids in serum, eliminated the liver’s fat accumulation, and decreased the oxidative damage. Moreover, H-bihistidine could rescue CCl4-induced liver injury and recover energy supply through scavenging free radicals. Moreover, liver fibrosis prepared by high-fat diet and CCl4 administration was significantly alleviated after H-bihistidine treatment. This study suggests a novel nonenzymatic free radical scavenger against NLI and, potentially, other free-radical-induced diseases.

scholarly journals Possible Protective Role of Melatonin in Pediatric Infectious Diseases and Neurodevelopmental Pathologies

2020 ◽  
Vol 10 (01) ◽  
pp. e104-e109
Author(s):  
Antonio Molina-Carballo ◽  
Antonio Emilio Jerez-Calero ◽  
Antonio Muñoz-Hoyos
Keyword(s):  
Endothelial Cell ◽  
Free Radical ◽  
Chronic Administration ◽  
Protective Role ◽  
Free Radical Scavenger ◽  
Radical Scavenger ◽  
Energetic Metabolism ◽  
Beneficial Effects ◽  
Molecular Crosstalk

AbstractMelatonin, produced in every cell that possesses mitochondria, acts as an endogenous free radical scavenger, and improves energetic metabolism and immune function, by complex molecular crosstalk with other intracellular compounds. There is greatly increasing evidence regarding beneficial effects of acute and chronic administration of high melatonin doses, in infectious, developmental, and degenerative pathologies, as an endothelial cell and every cell protectant.

scholarly journals The Antihyperlipidaemic Property of Methanol Leaf Extract of Chrysophyllum albidum in Albino Rats (Wistar Strain) Fed on High Fat Diet.

2018 ◽  
Vol 11 (1) ◽  
pp. 2146-2154
Author(s):  
Osebhahiemen Happiness Ojemekele ◽  
Ehimwenma Sheena Omoregie
Keyword(s):  
High Fat Diet ◽  
Wistar Rats ◽  
Leaf Extract ◽  
Ldl Cholesterol ◽  
Hdl Cholesterol ◽  
Negative Control ◽  
High Fat ◽  
Body Weights ◽  
Liver And Kidney ◽  
Group 2

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.  

scholarly journals The Impact of High-Fat Diet on Mitochondrial Function, Free Radical Production, and Nitrosative Stress in the Salivary Glands of Wistar Rats

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Anna Zalewska ◽  
Dominika Ziembicka ◽  
Małgorzata Żendzian-Piotrowska ◽  
Mateusz Maciejczyk
Keyword(s):  
Oxidative Stress ◽  
Free Radical ◽  
High Fat Diet ◽  
Wistar Rats ◽  
Nitrosative Stress ◽  
Ros Production ◽  
Parotid Glands ◽  
High Fat ◽  
Free Radical Production ◽  
Radical Production

Oxidative stress plays a crucial role in the salivary gland dysfunction in insulin resistance; however, the cause of increased free radical formation in these conditions is still unknown. Therefore, the aim of the study was to investigate the effect of high-fat diet (HFD) on the mitochondrial respiratory system, prooxidant enzymes, ROS production, and nitrosative/oxidative stress in the submandibular and parotid glands of rats. The experiment was performed on male Wistar rats divided into two groups (n=10): control and HFD. The 8-week feeding of HFD affects glucose metabolism observed as significant increase in plasma glucose and insulin as well as HOMA-IR as compared to the control rats. The activity of mitochondrial Complex I and Complex II+III was significantly decreased in the parotid and submandibular glands of HFD rats. Mitochondrial cytochrome c oxidase (COX) activity and the hydrogen peroxide level were significantly increased in the parotid and submandibular glands of the HFD group as compared to those of the controls. HFD rats also showed significantly lower reduced glutathione (GSH) and reduced : oxidized glutathione (GSH : GSSG) ratio, as well as a higher GSSG level in the parotid glands of HFD rats. The activity of NADPH oxidase, xanthine oxidase, and levels of oxidative/nitrosative stress (malonaldehyde, nitric oxide, nitrotyrosine, and peroxynitrite) and inflammation/apoptosis (interleukin-1βand caspase-3) biomarkers were statistically elevated in the HFD group in comparison to the controls. HFD impairs mitochondrial function in both types of salivary glands by enhancing ROS production, as well as stimulating inflammation and apoptosis. However, free radical production, protein nitration, and lipid peroxidation were more pronounced in the parotid glands of HFD rats.

Role of Free Radical Scavenger in Protection of Spinal Cord during Ischemia

1986 ◽  
Vol 41 (5) ◽  
pp. 551-556 ◽  
Author(s):  
John C. Coles ◽  
S. Naeem Ahmed ◽  
Harendra U. Mehta ◽  
John C.E. Kaufmann
Keyword(s):  
Spinal Cord ◽  
Free Radical ◽  
Free Radical Scavenger ◽  
Radical Scavenger
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