scholarly journals BM-MSCS IMMUNOMODULATORY, ANTI-INFLAMMATORY, ANTI-APOPTOTIC AND ANTIOXIDANT CAPACITY ROLES IN MODULATING THE ALTERED TISSUES OXIDATIVE STRESS STATUS IN STZ-DIABETIC RATS: IN COMPARISON TO THE STANDARD INSULIN TREATMENT

2020 ◽  
Vol 8 (8) ◽  
pp. 591-617
Author(s):  
Shady G. El-Sawah ◽  
◽  
Ahmed Nabil ◽  
Hanan Rashwan ◽  
Dlovan Y. Khalil ◽  
...  
2003 ◽  
Vol 22 (6) ◽  
pp. 423-427 ◽  
Author(s):  
Mary Otsyula ◽  
Matthew S. King ◽  
Tonya G. Ketcham ◽  
Ruth A. Sanders ◽  
John B. Watkins

Two of the models used in current diabetes research include the hypergalactosemic rat and the hyperglucosemic, streptozotocin-induced diabetic rat. Few studies, however, have examined the concurrence of these two models regarding the effects of elevated hexoses on biomarkers of oxidative stress. This study compared the activities of superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase and the concentrations of glutathione, glutathione disulfide, and thiobarbituric acid reactants (as a measure of lipid peroxidation) in liver, kidney, and heart of Sprague-Dawley rats after 60 days of either a 50% galactose diet or insulin deficiency caused by streptozotocin injection. Most rats from both models developed bilateral cataracts. Blood glucose and glycosy-lated hemoglobin A1c concentrations were elevated in streptozotocin diabetic rats. Streptozotocin diabetic rats exhibited elevated activities of renal superoxide dismutase, cardiac catalase, and renal and cardiac glutathione peroxidase, as well as elevated hepatic lipid peroxidation. Insulin treatment of streptozotocin-induced diabetic rats normalized altered markers. In galactosemic rats, hepatic lipid peroxidation was increased whereas glutathione reductase activity was diminished. Glutathione levels in liver were decreased in diabetic rats but elevated in the galactosemic rats, whereas hepatic glutathione disulfide concentrations were decreased much more in diabetes than in galactosemia. Insulin treatment reversed/prevented all changes caused by streptozotocin-induced diabetes. Lack of concomitance in these data indicate that the 60-day galactose-fed rat is not experiencing the same oxidative stress as the streptozotocin diabetic rat, and that investigators must be cautious drawing conclusions regarding the concurrence of the effects of the two animal models on oxidative stress biomarkers.


2016 ◽  
Vol 32 (3) ◽  
pp. 329-336 ◽  
Author(s):  
Abolfazl Nasiri ◽  
Nasrin Ziamajidi ◽  
Roghayeh Abbasalipourkabir ◽  
Mohammad Taghi Goodarzi ◽  
Massoud Saidijam ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Chonlathip Thipkaew ◽  
Jintanaporn Wattanathorn ◽  
Supaporn Muchimapura

In this study, quercetin-loaded zein-based nanofibers were developed using electrospinning technique. The therapeutic effect of these quercetin-loaded nanofibers on neuropathy in streptozotocin- (STZ-) induced diabetes in rats was assessed. Diabetic condition was induced in male Wistar rats by STZ, after which a crush injury of the right sciatic nerve was performed to induce mononeuropathy. Functional recovery was assessed using walking track analysis, measurements of foot withdrawal reflex, nerve conduction velocity, and morphological analysis. The oxidative stress status and the ratio of phosphorylated extracellular recognition kinase (pERK)/extracellular recognition kinase (ERK) expression in the nerve lesion were also assessed in order to elucidate the potential mechanisms involved. Results showed that quercetin-loaded zein-based nanofibers slightly enhanced functional recovery from neuropathy in STZ-diabetic rats. The potential mechanism might partially involve improvements in oxidative stress status and the ratio of pERK/ERK expression in the nerve lesion.


2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Nour Elkhair Ali ◽  
Lamis AbdelGadir Kaddam ◽  
Suad Yousif Alkarib ◽  
Babikir Gabir Kaballo ◽  
Sami Ahmed Khalid ◽  
...  

Background. Oxidative processes might increase in patients with end-stage renal disease (ESRD) according to the current literature. Oxidative stress (OS) is a risk factor of atherosclerosis and cardiovascular complications, which are major causes of mortality among ESRD patients. Haemodialysis (HD) is life-saving procedure, nevertheless it is an active chronic inflammatory status that could augment cardiovascular disease and increase mortality. Gum Arabic (GA) has been claimed to act as an antioxidant and anti-inflammatory agent in experimental studies and clinical trials. Therefore, we assumed GA supplementation among haemodialysis patients would reduce oxidative stress and consequently reduce the state of chronic inflammatory activation associated with haemodialysis. Methods. Forty end-stage renal failure (ESRF) patients aged 18–80 years who were on regular haemodialysis in Arif Renal Center, Omdurman, Sudan, were recruited. All recruited patients met the inclusion criteria and signed informed consent prior to enrolment. The patients received 30 g/day of GA for 12 weeks. C-reactive protein (CRP) and complete blood count (CBC) were measured as baseline and monthly. Total antioxidant capacity (TAC) and oxidative stress marker malondialdehyde (MDA) levels were measured before and after GA intake. Ethical approval from the National Medicines and Poisons Board was obtained. Results. Gum Arabic significantly augmented total antioxidant capacity level (P<0.001) (95% CI, 0.408–0.625) and also attenuated oxidative marker MDA and C-reactive protein (P<0.001). Conclusions. GA has revealed potent antioxidative and anti-inflammatory properties in haemodialysis patients. Oral digestion of GA (30 g/day) decreased oxidative stress and inflammatory markers among haemodialysis patients. Trial registration. ClinicalTrials.gov Identifier: NCT03214692, registered 11 July 2017 (prospective registration).


2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Jintanaporn Wattanathorn ◽  
Paphaphat Thiraphatthanavong ◽  
Wipawee Thukham-mee ◽  
Supaporn Muchimapura ◽  
Panakaporn Wannanond ◽  
...  

The novel protectant against diabetic cataract and diabetic retinopathy is currently required due to the increased prevalence and therapeutic limitation. Based on the advantage of polyphenol on diabetic eye complications, we hypothesized that the combined extract of mango seed Vietnamese coriander (MPO), a polyphenol-rich substance, should possess anticataractogenesis and antiretinopathy in streptozotocin- (STZ-) diabetic rats. MPO at doses of 2, 10, and 50 mg/kg·BW were orally given to STZ-diabetic rats for 10 weeks. Lens opacity was evaluated every week throughout a study period whereas the evaluation of cataract severity and histological changes of both rat lens epithelium and retina together with the biochemical assays of oxidative stress status, aldose reductase, p38MAPK, ERK1/2, and VEGF were performed at the end of experiment. Our data showed that MPO improved cataract and retinopathy in STZ-diabetic rats. The improved oxidative stress status and the decreased p38MAPK, ERK1/2, and VEGF were also observed. Therefore, anticataractogenesis and antiretinopathy of MPO might occur partly via the decreased oxidative stress status and the suppression of aldose reductase, p38MAPK, ERK1/2, and VEGF. This study points out that MPO is the potential candidate protectant against diabetic cataract and diabetic retinopathy. However, the exploration for possible active ingredient (S) still requires further researches.


Author(s):  
Orsu Prabhakar

Aim: Ischemic stroke is one of the important complications of diabetes. Diabetes exacerbate cerebral injury after ischemia and reperfusion. This study was designed to investigate whether the naringenin has a cerebroprotective action against the ischemic reperfusion injury via anti-oxidant and anti-inflammatory mechanisms in diabetic rats. Diabetes was induced by Streptozocine (50mg/kg) intraperitoneal injection at once. Medial carotid artery occlusion (30 min) and reperfusion (3 hr) was employed to induce cerebral infarction in diabetic rats. The animals were divided in to groups as: normal, sham, ischemia-reperfusion and naringenin treated (50, 100, 150 and 200mg/kg). These were used for evaluation of percentage of cerebral infarction. Further, 200mg/kg dose was selected for the estimation of inflammatory biomarkers such as Tumor necrosis factor-α, Interlukin-6, Interlukin-10 and oxidative stress biomarkers such as malondialdehyde, superoxide dismutase, and catalase were estimated and histopathological changes were studied. Dose dependent reduction in percentage of cerebral infarction was observed in narigenin treated groups. With Naringenin 200mg/kg dose, inflammatory and oxidative stress markers like Tumor necrosis factor-α, Interlukin-6, myeloperoxidase and malondialdehyde levels were distinctively reduced and there was a remarkable increased levels of anti-inflammatory and anti-oxidant markers like Interlukin-10, catalase, and superoxide dismutase. Conclusion: Collectively, these findings demonstrate that the mechanism (s) responsible for a cerebroprotective effect of naringenin against the ischemic reperfusion injury in the diabetic rats involves anti-oxidant and anti-inflammatory actions.


2013 ◽  
Vol 4 (1) ◽  
pp. 5 ◽  
Author(s):  
AndréValle de Bairros ◽  
Fernando de Freitas ◽  
Mirna Leal ◽  
Cinthia Mazzanti ◽  
AnaPaula Moreira ◽  
...  

Foods ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2872
Author(s):  
Chandra Sekhar Arigela ◽  
Giribabu Nelli ◽  
Siew Hua Gan ◽  
Kuttulebbai Nainamohamed Salam Sirajudeen ◽  
Kumarathevan Krishnan ◽  
...  

Honey has several pharmacological effects, including anti-diabetic activity. However, the effectiveness of bitter gourd honey (BGH) in the treatment of diabetes mellitus (DM) is unknown. The aim of this study was to determine the antioxidant, anti-inflammatory, and anti-apoptotic properties of BGH on the kidney and liver of a streptozotocin-induced diabetes rat model. Methods: A single dose (nicotinamide 110 mg/kg, streptozotocin (STZ) 55 mg/kg, intraperitoneal (i.p.)) was used to induce DM in male rats. For 28 days, normal or diabetic rats were administered 1 g/kg/day and 2 g/kg/day of BGH orally. After the treatment, blood, liver, and kidney samples were collected and analysed for biochemical, histological, and molecular parameters. In addition, liquid chromatography–mass spectrometry (LC-MS) was used to identify the major bioactive components in BGH. Results: The administration of BGH to diabetic rats resulted in significant reductions in alanine transaminase (ALT),aspartate aminotransferase (AST), creatinine, and urea levels. Diabetic rats treated with BGH showed lesser pathophysiological alterations in the liver and kidney as compared to non-treated control rats. BGH-treated diabetic rats exhibited reduced levels of oxidative stress (MDA levels), inflammatory (MYD88, NFKB, p-NFKB, IKKβ), and apoptotic (caspase-3) markers, as well as higher levels of antioxidant enzymes (SOD, CAT, and GPx) in the liver and kidney. BGH contains many bioactive compounds that may have antioxidative stress, anti-inflammatory, and anti-apoptotic effects. Conclusion: BGH protected the liver and kidney in diabetic rats by reducing oxidative stress, inflammation, and apoptosis-induced damage. As a result, BGH can be used as a potential therapy to ameliorate diabetic complications.


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