Measuring Malondialdehyde Levels Research Articles

Antioksidan in vivo buah beligo (Benincasa hispida (Thunb.) Cogn.) berdasarkan penurunan kadar malondialdehid tikus jantan wistar

The aim is to ascertain the in vivo antioxidant activity of beligo fruit flesh ethanol extract based on the measurement of malondialdehyde levels in Wistar male rats generated by used frying oil. The procedure involves macerating 70% ethanol to extract the flesh from beligo fruit and assessing the in vivo antioxidant activity by measuring the amounts of malondialdehyde in fifty Wistar male rats split into 5 groups. Group V received vitamin C at a dose of 27 mg/kgBW, and groups II, III, and IV received an ethanol extract of beligo fruit flesh at 100, 200, and 400 mg/kg BW. Group I received 1% Na-CMC as a negative control. Using a UV-Vis spectrophotometer, malondialdehyde levels were determined using the TBARS test. Statistical data analysis by a Completely Randomized Design (CRD) and an Honestly Significant Difference (HSD) follow-up test. Malondialdehyde levels decreased in Group I (19.16%), Group II (78.70%), Group III (82.86%), Group IV (87.76%), and Group V (90.23%) according to the study's findings. The study findings demonstrated the antioxidant potential of beligo fruit flesh ethanol extract at doses of 100 mg, 200 mg/kg BW (p<0.05), and 400 mg/kg BW (p<0.01) in lowering malondialdehyde levels in Wistar male rats.

Potential of Soursop Leaf Extract as an Antioxidant in MCF-7 Cells

The frequency of breast cancer tends to increase. Malondialdehyde (MDA) is a marker of oxidative stress as an end product from the chain reaction of lipid peroxidation. The use of traditional medicine soursopleaf (Annona muricata L.) has been reported for a long time because of its bioactivity as an antioxidant. This study analyzes the relationship between MDA levels and glutathione enzymes in MCF-7 cells given the methanol extract of soursop leaves. The methanol extract of soursop leaves was carried out by infusion method. The methanol extract of soursop leaves was given to cancer cells at several doses with an incubation of 24 hours. The cytotoxic test was carried out using the MTT method. Measurement of MDA levels was carried out using the thiobarbituric acid reactive substance (TBARS/TBA) reactivity test method. GSH measurements used the colorimetric method. The results showed that the ethanol extracts of soursop leaves have cytotoxic activity in the MCF-7 breast cancer cell line with IC50 values of 23.96 ppm. Ethanol extract of soursop leaves increased levels of MDA inhibition and GSH level. Soursop leaf extract could increase MDA inhibition GSH level in human breast cancer cells MCF-7.

Redistribution of Defective Mitochondria-mediated Dihydroorotate Dehydrogenase Imparts 5-Fluorouracil Resistance in Colorectal Cancer

Although 5-fluorouracil (5-FU) is the primary chemotherapy treatment for colorectal cancer (CRC), its efficacy is limited by drug resistance. Ferroptosis activation is a promising treatment for 5-FU-resistant cancer cells; however, potential therapeutic targets remain elusive. This study investigated ferroptosis vulnerability and dihydroorotate dehydrogenase (DHODH) activity using stable, 5-FU-resistant CRC cell lines and xenograft models. Ferroptosis was characterized by measuring malondialdehyde levels, assessing lipid metabolism and peroxidation, and using mitochondrial imaging and assays. DHODH function is investigated through gene knockdown experiments, tumor behavior assays, mitochondrial import reactions, intramitochondrial localization, enzymatic activity analyses, and metabolomics assessments. Intracellular lipid accumulation and mitochondrial DHODH deficiency led to lipid peroxidation overload, weakening the defense system of 5-FU-resistant CRC cells against ferroptosis. DHODH, primarily located within the inner mitochondrial membrane, played a crucial role in driving intracellular pyrimidine biosynthesis and was redistributed to the cytosol in 5-FU-resistant CRC cells. Cytosolic DHODH, like its mitochondrial counterpart, exhibited dihydroorotate catalytic activity and participated in pyrimidine biosynthesis. This amplified intracellular pyrimidine pools, thereby impeding the efficacy of 5-FU treatment through molecular competition. These findings contribute to the understanding of 5-FU resistance mechanisms and suggest that ferroptosis and DHODH are promising therapeutic targets for patients with CRC exhibiting resistance to 5-FU.

Effect of Andrographis Paniculata Aqueous Extract on Hyperammonemia Induced Alteration of Oxidative and Nitrosative Stress Factors in the Liver, Spleen and Kidney of Rats

ABSTRACT Hyperammonemia (HA) can induce oxidative and nitrosative stress in peripheral organs, potentially exacerbating Hepatic Encephalopathy (HE). This study assessed the efficacy of Andrographis paniculata aqueous extract (APAE) in mitigating oxidative and nitrosative stress caused by non-cirrhotic HA in rat livers, spleens, and kidneys. HA was induced via intraperitoneal injection of ammonium acetate, while APAE was administered orally. The study measured malondialdehyde (MDA), superoxide dismutase (SOD), catalase, and glutathione reductase (GR) to gauge oxidative stress, and nitric oxide (NO) levels as a marker of nitrosative stress. Both acute and chronic HA altered the levels of antioxidant enzymes, MDA, and NO in the organs studied. APAE treatment helped restore SOD, catalase, and GR levels, and decreased MDA and NO levels, demonstrating its potential in reducing oxidative stress linked to HA in the liver, spleen, and kidney.

Protective Effect of Resveratrol Combined with Levodopa Against Oxidative Damage in Dopaminergic Neurons.

Levodopa (L-3,4-dihydroxyphenylalanine, L-Dopa) alleviates the symptoms of Parkinson's disease (PD), yet prolonged usage may give rise to severe adverse effects. Resveratrol (RSV) is a potent antioxidant, anticancer and anti-inflammatory agent. And a variety of polyphenol antioxidant compounds derived from RSV combined with levodopa have demonstrated neuroprotective activity against neuronal cell death. The purpose of this study was to examine the impact of this combination of RSV and L-Dopa on the survival rate, growth status, and reactive oxygen species (ROS) of MES23.5 dopamine (DA) neuron cells. In this study, we induced MPP+ in MES23.5 dopamine neuron cells and observed their survival rate, growth status, ROS content, as well as the effect of RSV combined with L-Dopa on cell survival. We also measured malondialdehyde (MDA) levels and superoxide dismutase (SOD) activity levels as indicators of mitochondrial function, oxidative stress, and oxidative damage in the cells. Our results indicated that the MES23.5 dopamine neurons had decreased survival, poor growth status, and increased ROS content after MPP+ induction. Moreover, we found that MDA levels were elevated, and SOD activity levels were decreased, suggesting that the cells experienced abnormal mitochondrial function. However, when RSV was combined with L-Dopa, the cells showed a reduced level of MPP + -induced oxidative damage, with a more significant inhibitory effect observed in the RSV group at a concentration of 50 μmol/L. In conclusion, we found that the effects of co-administration of RSV with L-Dopa (100 μmol/L) was more effective than L-Dopa administered at the high dose. Thus, we found that RSV has the potential to reduce the dose of L-Dopa required to improve PD symptoms.

Evaluation of In Vitro and In Vivo Antioxidant Potential of the Ethyl Acetate Fraction of Cyperus Pangorei Rhizome

Background and Aim: Antioxidants derived from natural sources, particularly those rich in flavonoids and phenolic compounds, have attracted considerable interest for their potential health benefits in combating oxidative stress-related diseases. This study aimed to evaluate the antioxidant potential of the ethyl acetate (EtAc) fraction obtained from Cyperus pangorei rhizome, focusing on both in vitro and in vivo assessments. Methods: The EtAc fraction was subjected to RP-HPLC analysis to identify and quantify phenolic compounds and flavonoids. Acute toxicity testing was performed to assess the safety profile of the EtAc fraction. In vitro antioxidant activity was determined using DPPH and ABTS+ radical scavenging assays. In vivo evaluation of antioxidant activity was conducted in Triton X-100-induced oxidative stress model in mice, measuring malondialdehyde (MDA) content, glutathione (GSH) levels, and superoxide dismutase (SOD) activity in liver tissues. Results: RP-HPLC analysis confirmed the presence of quercetin, luteolin, and apigenin in the EtAc fraction. The fraction exhibited significant dose-dependent antioxidant activity in both DPPH and ABTS+ assays, with IC50 values indicating potent scavenging effects. In the Triton X-100-induced stress model, administration of the EtAc fraction led to a reduction in MDA levels, restoration of GSH levels, and enhancement of SOD activity in mouse liver tissues. Conclusion: The findings suggest that the EtAc fraction from C. pangorei possesses promising antioxidant properties, as evidenced by its ability to mitigate oxidative stress-related damage both in vitro and in vivo.

The Effect Of Galoba (Hornstedtia sp.)Fruit Extract On Malondialdehyde (MDA) Serum Level Of Hyperglycemic Mice (Mus musculus) Streptozotocin-Induced

Background: Hyperglycemia or increased blood sugar levels is a sign of diabetes mellitus. In hyperglycemia, there will be an increase in Reactive Oxygen Species (ROS) in the body so that it will lead to a state of oxidative stress characterized by an increase in malondialdehyde (MDA) levels. Galoba fruit is an endemic fruit in Maluku Province that contains antioxidants. Antioxidants contained in galoba fruit can help endogenous antioxidants to overcome oxidative stress. Objective: This study aims to determine the effect of galoba fruit extract on serum MDA levels of hyperglycemia mice induced by streptozotocin. Methods: This study is an experimental study with post-test only control group design and random sampling. The sample consisted of 24 mice divided into 6 groups, namely normal control (KN), negative control (K-), positive control (K+), treatment 1 (P1), treatment 2 (P2), and treatment 3 (P3). The KN group was only given a standard diet, the K- group was only induced streptozotocin, the K+ group was induced streptozotocin and treated with metformin for 21 days, and the P1, P2, and P3 groups were induced streptozotocin and given galoba fruit extract concentrations of 100%, 75%, and 50% for 21 days. After treatment, the mice were dissected to collect blood serum from the heart of the mice to measure MDA levels. Serum MDA levels were measured by the TBARS method. Results: The average serum MDA levels of the KN, K-, K+, P1, P2, and P3 groups were 358.75 nmol/mg, 1278.75 nmol/mg, 522.08 nmol/mg, 526.16 nmol/mg, 442.66 nmol/mg, and 432.41 nmol/mg. MDA data obtained was then tested with one way ANOVA and obtained a value of p=0.00 (<0.05). Conclusion: Based on the Tukey test, both P1, P2, and P3 have the same effect on reducing serum MDA levels of mice after being induced by streptozotocin with P3 providing the greatest decrease.

Monotropein Alleviates Ovalbumin-Induced Asthma in Mouse Model by Inhibiting AKT/NF-κB Pathway

Introduction: Clinical management of asthma remains as a prevalent challenge. Monotropein (MON) is a naturally occurring cyclic enol ether terpene glycoside with medical application potential. This study aims to evaluate the potential therapeutic effects of MON in the mouse model of chronic asthma. Methods: An ovalbumin (OVA)-induced asthmatic mouse model was established to evaluate the therapeutic effect of MON at different doses (20, 40, and 80 mg/kg). The potential involvement of protein kinase B (AKT)/nuclear factor kappa B (NF-κB) pathway in the effect of MON was investigated by the administration of an AKT activator SC79. Histological changes in pulmonary tissues were examined by hematoxylin and eosin staining. The profiles of inflammatory cytokines (interleukin [IL]-4, IL-5, IL-13, and tumor necrosis factor [TNF]-α) in bronchoalveolar lavage fluid (BALF), and OVA-specific IgE in blood samples were analyzed by enzyme-linked immunosorbent assay (ELISA). The oxidative stress in the lung tissues was determined by measuring malondialdehyde level. The phosphorylation activation of AKT and NF-κB was examined by immunoblotting in the lung tissues. Results: MON treatment suppressed the infiltration of inflammatory cells in the airways of OVA-induced asthma mice and reduced the thickness of the bronchial wall and smooth muscle layer in a dose-dependent manner. MON treatment also reduced the levels of OVA-specific IgE in serum and cytokines in BALF in asthma-induced mice, and attenuated the oxidative stress in the lung tissues. OVA induced the phosphorylation of AKT and NF-κB proteins in the lung tissues of asthmatic mice, which was significantly suppressed by MON treatment. The co-administration of AKT activator SC79 impaired the therapeutic effect of MON on asthma-induced mice. Conclusion: Our data demonstrated the potential therapeutic effect of MON on asthmatic mouse model, suggesting that MON attenuated the inflammatory and oxidative damages in ling tissues by dampening the AKT/NF-κB signaling pathway.

Faecal Microbiota Transplantation Alleviates Ferroptosis after Ischaemic Stroke

Ischaemic stroke can induce changes in the abundance of gut microbiota constituents, and the outcome of stroke may also be influenced by the gut microbiota. This study aimed to determine whether gut microbiota transplantation could rescue changes in the gut microbiota and reduce ferroptosis after stroke in rats. Male Sprague-Dawley rats (6 weeks of age) were subjected to ischaemic stroke by middle cerebral artery occlusion (MCAO). Fecal samples were collected for 16S ribosomal RNA (rRNA) sequencing to analyze the effects of FMT on the gut microbiota. Neurological deficits were evaluated using the Longa score. triphenyl tetrazolium chloride (TTC) staining was performed in the brain, and kits were used to measure malondialdehyde (MDA), iron, and glutathione (GSH) levels in the ipsilateral brain of rats. Western blotting was used to detect the protein expression levels of glutathione peroxidase 4 (GPX4), solute carrier family 7 member 11 (SLC7A11), and the transferrin receptor 2 (TFR2) in the ipsilateral brain of rats. Stroke induced significant changes in the gut microbiota, and FMT ameliorated these changes. TTC staining results showed that FMT reduced cerebral infarct volume. In addition, FMT diminished MDA and iron levels and elevated GSH levels in the ipsilateral brain. Western blot analysis showed that FMT increased GPX4 and SLC7A11 protein expression and decreased TFR2 protein expression in the ipsilateral brain after stroke. FMT can reverse gut microbiota dysbiosis, reduce cerebellar infarct volume, and decrease ferroptosis after stroke.

In vitro Effects of Olive Leaf Extract (Oleuropein) on Human Sperm Parameters and Oxidative Stress Induced by Bacterial Lipopolysaccharide (LPS).

Recently, biomolecules from natural products have paved the way for novel drug in the treatment of some diseases in vitro and in vivo models as diabetes, cancer and infertility. As such, we aimed to evaluate the capacity of Oleuropein (OLE), the major bio-phenol in olive leaf, to protect human sperm against bacterial lipopolysaccharide (LPS) inducing sperm oxidative stress and defective sperm functions. The toxic effect of OLE on human sperm was firstly investigated by evaluating sperm parameters after incubation during 60 minutes with different concentrations. Determined non-toxic concentration was then used to evaluate the capacity of OLE to protect sperm against LPS oxidative damages and sperm parameters alterations. Thus, sperms were consecutively incubated with LPS (10 µg/mL) and OLE (40 µg/mL) during 60 minutes, then submitted to sperm parameters analysis and oxidative stress assessment by measuring malondialdehyde (MDA), carbonyl groups (CG) levels and the activity of some antioxidant enzymes: superoxide dismutase (SOD) and catalase (CAT). A significant decrease of sperm parameters as well as a significant increase in MDA levels, CG levels, SOD and CAT activities was found after stimulation by LPS. However, a non-significant difference was shown comparing sperms treated by LPS and OLE with LPS-treated control sperms. Consequently, despite the high antioxidant and anti-inflammatory capacity of OLE reported in diverse cells, this phenolic compound seems to be not appropriate to protect human sperm in vitro against induced LPS oxidative stress and seems to have a "double-edged sword" behavior.

Neuroprotective effects of Petiveria alliacea on scopolamine-induced learning and memory impairment mouse model

Ethnopharmacology relevancePetiveria alliacea L., commonly known as macura and gully root, is an important medicinal plant used in the Caribbean and Central America to treat ailments associated to the central nervous system, including poor memory. Aim of the studyTo assess the effects of the P. alliacea leaves methanol fraction (PMF) on a scopolamine-induced learning and memory impairment mouse model related to acetylcholinesterase activity and oxidative stress. Material and methodsAfter PMF administration at doses of 500 or 900 mg/kg, cognitive ability was evaluated using the Morris water maze (MWM), Y-maze (YM) and novel object recognition (NOR) tests. The mouse brain tissue was further assessed for acetylcholinesterase activity and antioxidant activity. Levels of oxidative stress were also evaluated by measuring malondialdehyde (MDA) and glutathione activity. Acute toxicity was also evaluated. ResultsPMF led to memory improvement in the behavioral tests in mice with scopolamine-induced cognitive impairment. Moreover, PMF inhibited acetylcholinesterase activity and showed antioxidant potential that in turn attenuated cholinergic degradation. Additionally, PMF increased glutathione levels and glutathione reductase activity and reduced MDA levels in the brain. Moreover, no acute toxicity was detected with the use of PMF. ConclusionIn a mouse model of scopolamine-induced cognitive deficit, PMF exhibited protective effects, decreasing oxidative damage and regulating cholinergic function in the brain bearing significant memory enhancing potency. These data suggest that PMF is a promising candidate for developing therapies for neurodegenerative disorders.

Effect of dexmedetomidine administration on malondialdehyde levels in lower extremity surgery using tourniquets

Introduction: The use of a tourniquet in lower extremity surgery can help surgeons optimize the surgical field. However, tourniquet inflation may create ischemic conditions in the extremity, and tourniquet deflation may pose a risk of ischemic reperfusion injury (IRI). Ischemic conditions can increase the production of reactive oxidative stress (ROS), which, if it occurs simultaneously with IRI, will produce malondialdehyde (MDA), a toxic metabolite. The prolonged use of tourniquets can cause damage to the local skin tissue at the tourniquet inflation and poses a risk of IRI to other organs. This study aims to observe the effect of dexmedetomidine administration on malondialdehyde levels in lower extremity surgery using tourniquets. Methods: This study is an observational study with a prospective cohort design to measure malondialdehyde levels in lower extremity surgery using tourniquets. When the data were normally distributed, a statistical test was performed using an independent sample t-test to compare the demographic data of the two groups. To compare the results of the observation after the induction, 15 and 120 minutes after the release of the tourniquets, a repeated measures ANOVA was performed when the data were normally distributed. Then, to examine the correlation between variables, Spearman's correlation test was applied when the data were not normally distributed. Results: In this study, almost all the subjects in the isoflurane and dex-iso groups had no significantly different characteristics, and also showed no effect of tourniquet pressure on malondialdehyde levels. Conclusion: Based on statistical analysis and discussion of the effect of dexmedetomidine administration on malondialdehyde levels in lower extremity surgery using tourniquets, it can be concluded that there was no statistically significant effect of dexmedetomidine administration on malondialdehyde levels in lower extremity surgery using tourniquets.

Effects of Lunar Phases on Foot Temperature, Oxidative Stress, and Inflammation in Type 2 Diabetic Subjects.

It has been observed that the lunar phases alter the fasting plasma glucose (FPG) level in type-2 diabetic (T2DM) subjects. Diabetic peripheral neuropathy (DPN) was also reported to be associated with elevated foot temperature (FT), oxidative stress, and inflammation in T2DM subjects. The purpose of the present study was to evaluate the changes in FT, oxidative stress, and inflammation levels and assess the relationship of FT with oxidative stress, antioxidant enzyme activity, and inflammatory markers in T2DM subjects at different lunar phases. The plasma glucose, glycated hemoglobin, and dorsal and plantar surface temperatures of the feet by infrared dermal thermometer were measured in 88 randomly selected T2DM subjects at different lunar phases. The levels of oxidative stress and inflammation were assessed by measuring malondialdehyde (MDA), glucose 6-phosphate dehydrogenase (G6PDH), and tumor necrosis factoralpha (TNF-α). The FTs, MDA, and TNF-α were significantly increased, and G6PDH activity was significantly decreased in the new moon (NM) and full moon (FM) than in the third quarter (TQ) and first quarter (FQ) for both sexes. The FTs, MDA, and TNF-α levels were significantly positively correlated, whereas G6PDH activity was significantly negatively correlated with FPG at NM and FM in both sexes. The MFT was significantly positively correlated with MDA and TNF-α and significantly negatively correlated with G6PDH at NM and FM in T2DM subjects. The lunar phases showed a prominent influence on the FT, oxidative stress, and inflammatory status in T2DM subjects, which might be due to the existence of biological rhythm interaction with lunar electromagnetic radiations.

Hypoglycaemic, Hypolipidaemic and Antioxidant Properties of Celastrus paniculatus Seed Extract in STZ-induced Diabetic Rats

Background: Celastrus paniculatus is a herb used in the Ayurvedic system of medicine that has been reported to show multiple pharmacological properties. In this study, we explored the antioxidative, hypolipidaemic and hypoglycaemic potential of C. paniculatus methanolic seed extract (CPMSE) in high-fat diet (HFD)/streptozotocin (STZ)-induced type 2 diabetes mellitus (T2DM) rats.Materials and methods: Seeds of C. paniculatus were extracted in methanol using Soxhlet extraction method. A total of 36 rats were induced with STZ and HFD and treated with glibenclamide or various concentrations of CPMSE. Upon treatment, blood samples were collected and kidney and liver samples were homogenised. Serum biochemical estimation was performed using several diagnostic kits. Protein was estimated by bicinchoninic acid (BCA) method. Oxidative stress was assessed by measuring malondialdehyde level and superoxide dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) activity.Results: CPMSE caused improvements in glucose homeostasis, lipid profile, liver function and oxidative stress parameters in a dose-dependent manner. CPMSE significantly decreased the levels of fasting blood glucose and glycated haemoglobin as well as increased insulin level and total protein content. There was an increase in total cholesterol (TC), low density lipoprotein-cholesterol (LDL-C), triglycerides (TG) levels and reduction in high density lipoprotein-cholesterol (HDL-C) level. There was a decrease in serum levels of serum glutamate pyruvate transaminase (SGPT), serum glutamate oxaloacetate transaminase (SGOT) and alkaline phosphatase (ALP). CPMSE decreased LPO and increased CAT, SOD and GST activity.Conclusion: CPMSE has hypoglycaemic, hypolipidaemic and antioxidant properties by reducing the oxidative stress.Keywords: diabetes mellitus, Celastrus paniculatus, antioxidant, phytochemicals, phytonutrients, streptozotocin, high-fat diet

Evaluation of the protective role of resveratrol against sepsis caused by LPS via TLR4/NF-κB/TNF-α signaling pathways: Experimental study.

The development and progression of sepsis are multifactorial and influencethe immunological, endocrine, and cardiovascular systems of the body. Our knowledge of the key mechanisms involved in the pathogenesis of sepsis has expanded exponentially, yet this still needs to be translated into effective targeted therapeutic regimes. In the present study, we aimed to determine whether resveratrol has positive effects in the experimental sepsis rat model. Twenty-eightmale Spraque-Dawley rats were randomly divided into four groups (n = 7) as follows:control, lipopolysaccharide (LPS) (30 mg/kg dose), resveratrol, and LPS and resveratrol. After the experiment, liver and kidney tissues were collected for histopathological evaluation, blood serums were collected to measure malondialdehyde levels with enyzme-linked immunosorbent assay, and Toll-like receptor-4 (TLR4), tumor necrosis factor-α (TNF-α), nuclear factor-κB (NF-κB) immunoreactivity density was evaluated immunohistochemically. In addition, messenger RNA expression levels for TLR4, TNF-α, NF-κB, interleukin-1β, and interleukin 6 were measured. In addition, the damage observed in liver and kidney tissue was determined by AgNOR (argyrophilic nucleolar organizer regions) staining. LPS application caused severe tissue damage, oxidative stress, and increased the expressions of proinflammatory proteins and genes we evaluated, while resveratrol application eliminated these negativities. Resveratrol has been proven to suppress the TLR4/NF-κB/TNF-α pathway, a possible therapeutic signaling pathway that is important in initiating the inflammatory response in an animal model of sepsis.

Coenzyme Q10 treatment and diazinon exposure in parental male rats: effects of the exposure on their neonatal brains.

Prenatal acute and chronic exposure to organophosphorus pesticides may evoke physical and behavioral impairments in offspring development. However, the mechanism of antioxidant consumption repair to cure these impairments remains unclear. This study aimed to investigate the protective effects of COQ10 against DZN toxicity by measuring Malondialdehyde (MDA) level, superoxide dismutase (SOD) activity, the expression of MH2A, DNMT1, H2AZ, and HDAC3, and the histopathology in the brain of neonatal Wistar albino rats whose male parents were exposed to DZN and COQ10. The results showed that COQ10 could significantly decrease MDA level, histopathological alteration, and expression of DNMT1 and HDAC3 in the neonatal brain (P<0.05). Also, an increase in SOD activity and expression of MH2A and H2AZ were observed in the neonatal brain of this group (P<0.05). These investigations suggest that COQ10 can reduce the effects of DZN on neuronal oxidative stress and its damage to the neonatal brain.

The Effect of Virgin Coconut Oil (VCO) on Malondialdehyde, Glutathione Peroxidase, and Cortisol Hormone Levels

Vigorous physical activity is a physical movement that produces excessive free radicals due to leakage of electrons from the mitochondrial transport system. The body's antioxidant system is reduced due to the inability of the body's defenses to reduce the production of free radicals resulting in oxidative stress, so it requires a supply of antioxidants from outside the body such as Virgin Coconut Oil (VCO). The purpose of this study is to determine the effect of VCO administration on malondialdehyde levels, glutathione peroxidase levels and cortisol hormone levels in male Wistar rats subjected to strenuous physical activity. The research method uses an experimental with posttest only control group design. The experimental subjects were 24 male Wistar rats which were randomly divided into 4 groups (K1, K2, K3, and K4). The administration of VCO at dose of 25 mL and 50 mL are based of human weight 70 kg and the conversion dose in mice (BB = 200 g) resulted in 0.45 mL/200 g BW/day and 0.9 mL/200 g BW / day which is made into a 1 mL solution and given orally for 28 days. K3 and K4 groups were given strenuous physical activity and given VCO at a dose of 0.45 and 0.9 mL/200 g BW/day. The measurement of malondialdehyde levels using the TBARS method. The glutathione peroxidase (GPx) and the cortisol hormone using ELISA method at PSPG UGM in June 2022. The lowest average levels of MDA and GPx were in the K1 group. One-Way Anova test result showed that the levels of malondialdehyde, glutathione peroxidase, and the cortisol hormone in the K3 and K4 groups had significant differences with K2 group (p &lt; 0.05). The administration of VCO at doses of 0.45 mL/200 g BW/day and 0.9 mL/200 g BW/day could affect the levels of malondialdehyde, glutathione peroxidase, and the hormone cortisol in male Wistar rats subjected to strenuous physical activity.

The Effect of Alpha Lipoic Acid (ALA) Supplementation on the in Vitro Maturation Media of Goat Oocyte on Tumor Alpha Necrosis Factor (TNF-α) Expression and Malondialdehyde (MDA) Levels

This study aimed to determine the effect of Alpha Lipoic Acid (ALA) supplementation on in vitro maturation media of goat oocytes on Tumor Necrosis Factor Alpha (TNF-α) expression and Malondialdehyde (MDA) levels. This laboratory experimental study consisted of three treatment groups: control group (G0), 25 μmol/L ALA supplementation (G1), and 50 μmol/L ALA supplementation (G2). A total of 366 goats Cumulus Oocyte Complex (COCs) were collected, then selected into 216 COCs, and matured in vitro for 22 hours in a 5% CO2 incubator, 98% humidity, 38.50C temperature. After that, TNF-α expression was identified using Immunocytochemistry staining with the addition of TNF-α antibody and calculated using the Remmele Scale Index. Measurement of MDA levels using the ELISA method. The data obtained were analyzed using Kruskal-Wallis, One Way ANOVA, and Duncan’s in the SPSS 24 software program (p&lt;0.05). The expression value of TNF-α G0 was 0.75±1.39, G1 was 5.56±3.05, and G2 was 2.00±1.80. MDA levels of G0 were 26.52 ±2.92, G1 was 46.44 ±4.87, and G2 was 30.41±5.67. TNF-α expression data and MDA levels G0 and G2 didn’t show a significant difference, while G0 and G2 compared to G1 showed a significant difference (p&lt;0.05). ALA supplementation of 25 µmol/L increased TNF-α expression or MDA levels and 50 µmol/L on in vitro maturation media of goat oocytes could reduce TNF-α expression or MDA levels than 25 µmol/L.

Malondialdehyde and carbonyl levels in skeletal muscle tissues after intermittent hypobaric hypoxia exposures

Background: Hypobaric hypoxia is a state of decreased oxygen pressure at high altitudes that can lead to hypoxia and oxidative stress as a result. Skeletal muscle is one of the important organs that can be affected by oxidative stress and cause contractile dysfunction.&#x0D; Objective: This study aimed to evaluate the impact of intermittent hypobaric hypoxia on oxidative stress markers in rat skeletal muscle, by measuring malondialdehyde (MDA) and carbonyl levels.&#x0D; Methods: Twenty-five Wistar rats were allocated into five groups, including one control group and four hypoxic groups (I-IV). The hypoxic groups were exposed to an altitude of 25,000 feet for 5 minutes using hypobaric chamber in once (I), twice (II), three (III), and four (IV) times, with a 7-day interval period between exposures. The control group remained in normobaric conditions throughout the study. MDA levels were measured by thiobarbituric acid (TBA) test, while carbonyl levels were measured using 2,4-dinitrophenylhydrazine (DNPH) reagent.&#x0D; Results: The MDA level was significantly increased in group I compared to the control group (p=0.008). There were decreasing MDA levels in groups II, III, and IV compared to group I. The carbonyl level was significantly higher in group I than the control group (p=0.000), with an even higher level observed in group II. Although the carbonyl levels tended to decrease in groups III and IV, they still remained higher than those of the control group.&#x0D; Conclusion: Exposure to hypobaric hypoxia leads to an increase in MDA and carbonyl levels in the skeletal muscles, indicating an elevation of oxidative stress levels. However, the subsequent intermittent hypobaric hypoxia exposure resulted in a reduction in these levels, implying that skeletal muscles may adapt to hypoxic conditions.

EVALUATION OF ROLE OF FICUS BENGALENSIS IN MODULATION OF COGNITIVE IMPAIRMENT AND OXIDATIVE STRESS IN DIABETIC RATS

Objectives: Our objective was to study the effects of Ficus benghalensis on cognitive behavior and oxidative stress in diabetic rats and to compare with vitamin C and glimepiride. Methods: Wistar rats of either sex randomized into five groups of diabetic rats by streptozocin (STZ), five groups of non-diabetic rats (distilled water) (n=10). Subgroup division (F. benghalensis dose I and II, i.e., 50 mg/kg and 100 mg/kg; Vitamin C 100 mg/kg and glimepiride 0.5 mg/kg) were done. Each drug was given to one diabetic and one non-diabetic group. Other set served as control. Assessment of blood glucose, cognitive function (using continuous avoidance apparatus and Morris water maze test), and oxidative stress (measuring Malondialdehyde (MDA), reduced glutathione (GSH) levels) were done on Day 0 and 30. The acquisition phase of cognitive behavior tests was assessed on 0, 14, and 29 days and retention phase was assessed on 1, 15, and 30 day. Results: As compared to control group, F. benghalensis dose I, dose II, and glimepiride showed significant decrease (p&lt;0.001) in blood glucose. F. benghalensis dose I, dose II, vitamin C, and glimepiride group showed significant decrease in acquisition and retention of transfer latency on 29 and 30 days. Significant increase in retention of step-down latency on 30 day was shown by both the doses of F. benghalensis. Both doses of F. benghalensis, vitamin C and glimepiride group showed significant increase in retention of Quadrant-time in comparison to control on 30 days. Significant decrease in brain MDA levels while a significant increase in brain GSH levels was observed in all groups except control. Conclusion: F. benghalensis reverses behavioral and biochemical changes induced by STZ and effects are comparable with that of vitamin C and glimepiride.