Total Oxidant Status Values Research Articles

Dexpanthenol Inhibits Inflammation and Apoptosis in LPS-Induced Acute Lung Injury by Reducing Increased VCAM-1 and Caspase-3 Expressions in Rats

This study aims to investigate the effects of Dexpanthenol (Dex), a stable alcoholic analogue of D-pantothenic acid which has anti-oxidant, antiapoptotic, and antiinflammatory properties, on lipopolysaccharide (LPS)-induced lung damage via caspase-3 (cas-3) and vascular cell adhesion molecule-1 (VCAM-1) levels. According to the experimental plan of study, thirty-two Wistar Albino species rats were distributed randomly into four groups as control, LPS (5 mg/kg, intraperitoneally (i.p), single dose), LPS (30 minutes before last Dex treatment) + Dex (500 mg/kg, i.p, for 3 days) and Dex. After six hours of LPS application, lung tissues of the rats were taken for histopathological, immunohistochemical and biochemical examinations. According to results of the study, LPS causes hyperemia, neutrophil leukocyte chemotaxis and thickened septal tissue on lung. Inducing inflammation by increasing VCAM-1 levels and triggers apoptosis by increasing cas-3 levels in lung tissue. In addition, LPS decreased total antioxidant status levels, which is a marker of anti-oxidant capacity, and increased oxidative stress index and total oxidant status values, which are indicators of oxidative stress. Dex has shown its effect by reversing all these alterations and normalizing the values. These results suggest that Dex can be used as a preservative to reduce LPS-induced acute toxicity in the lung.

Measurement of oxidant and antioxidant levels in liver tissue obtained from patients with liver transplantation: A case-control study

ObjectiveThis study aimed to compare oxidant and antioxidant substance accumulation in the liver tissues of patients with chronic liver disease (recipients) who underwent liver transplantation (LT) with living liver donors (LLDs) who underwent living donor hepatectomy (LDH). MethodsThis prospective study included 160 recipients (LT group) and 40 LLDs (LLD group). During surgery, a piece of liver tissue measuring a minimum of 10 × 10 mm was obtained from the edge of the right lobe of the liver of recipients and LLDs, incubated for 10 min in saline to remove blood, and stored at −70 °C until biochemical analysis was performed. Catalase (CAT), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), myeloperoxidase (MPO), prolidase, reduced glutathione (GSH), malondialdehyde (MDA), total oxidant status (TOS), total antioxidant status (TAS), oxidative stress index (OSI), total thiol, native thiol, and disulfide levels were measured in stored liver tissues. ResultsThere was a statistically significant difference between LT and LLD groups in terms of age (p < 0.001), body mass index (p = 0.019), GSH-Px (p < 0.001), SOD (p = 0.001), MPO (p < 0.001), prolidase (p < 0.001), GSH (p < 0.001), and MDA (p = 0.003) values in favor of the LT group. Furthermore, there was a statistically significant difference between LT and LLD groups in terms of CAT (p < 0.001), TAS (p < 0.001), TOS (p < 0.001), OSI (p < 0.001), total thiol (p < 0.001), native thiol (p < 0.001), and disulfide (p < 0.001) values in favor of the LLD group. There were no differences between the groups in terms of sex. ConclusionThis study demonstrated that it is possible to assess the extent of oxidative stress in liver tissues by measuring the levels of antioxidant enzymes, oxidants, or the end-products of oxidative stress. With the use of optimum and minimally invasive methods, quantifying these molecules will potentially help evaluate the extent of liver disease and prognostication of liver cirrhosis.

Application of artificial neural network coupling multiobjective particle swarm optimization algorithm to optimizePleurotus ostreatusextraction parameters

In this research, extraction parameters were optimized for the maximization of the antioxidants of mushrooms. Firstly, the total antioxidant status (TAS) and total oxidant status (TOS) of mushrooms under different extraction parameters were determined. Then, artificial neural network (ANN) and multi-objective particle swarm optimization (MOPSO) were applied for modeling and optimization of the extraction process, respectively. The three variables affecting this process were extraction temperature (40 to 70 °C), extraction time (4 to 10 h) and extraction concentration (0.25 to 2 mg/mL). The developed ANN-based model could predict with a correlation coefficient of 0.986 and 0.991 for TAS and TOS values, respectively. The optimum extraction parameters were extraction temperature of 40.721 °C, extraction time of 6.267 h, and extraction concentration of 2 mg/mL. These results indicated that the ANN-MOPSO hybrid model provides an accurate prediction and optimization method for TAS and TOS values of P. ostreatus extracts.

Antioxidant and Antimicrobial Activities of Ethanol Extract of Lepidium spinosum

In this study, the antioxidant and antimicrobial potentials of the ethanol extract of the aerial parts of Lepidium spinosum Ard., which is distributed in many regions of the world, were determined. The aerial parts of the plant were dried, powdered and extracted with ethanol. Total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI) of the plant extract were determined using Rel Assay Diagnostics kits. Antimicrobial activities of the plant extract were determined against standard bacterial and fungal strains by agar dilution method. As a result of the studies, the TAS value of the plant extract was determined as 4.550±0.132, the TOS value as 12.610±0.221, and the OSI value as 0.277±0.007. In addition, it has been found to be effective at 25-200 µg/mL against standard bacterial strains and 100-200 µg/mL concentrations against fungal strains. As a result, it was determined that L. spinosum used in our study could be a natural antioxidant and antimicrobial source. In this context, it is thought that natural material may be used in pharmacological designs.

Vitamin D Supplementation Improves Follicle Maturation By Regulating Oxidant/Antioxidant Balance in Women With PCOS

Objective: To investigate the effect of vitamin D (VD) supplementation on follicular fluid total oxidant status (TOS) and total antioxidant status (TAS) in women undergoing IVF/ICSI due to PCOS. Materials and Methods: Forty infertile women who were diagnosed with PCOS and decided on IVF/ICSI and whose serum VD levels were lower than 20 ng/mL were included in the study. The VD levels of the patients were determined according to the proposal of Endocrine Society. The patients were divided into two equal groups with 20 patients in each group. While the patients in Group 1 were given 400 IU/day of oral VD3 replacement, the patients in Group 2 were given 600 IU/day of oral VD3. VD treatment was started one month before the controlled ovarian stimulation cycle and continued throughout the following cycle. Fifteen patients with serum VD levels &gt;30 ng/mL were taken as the control group. Oral VD replacement was not given to the patients in the control group. TAS and TOS values were measured in the follicle fluids taken from the patients in the VD replacement group and the patients in the control group on the day of ooist pick-up. Results: When compared with the control group, the follicular fluid TAS levels of both groups with VD replacement were significantly higher, while TOS levels were found to be significantly lower. When 400 IU/day VD replacement and 600 IU/day VD replacement were compared within themselves, follicular fluid TAS and TOS levels were found to be similar. Increasing the VD replacement dose from 400 IU/day to 600 IU/day did not cause a significant change in TAS and TOS values. A positive and significant correlation was found between intrafollicular TAS levels and serum VD, MII oocyte, 2PN zygote and clinical pregnancy rates. A negative correlation was found between intrafollicular TOS levels and serum VD, 2PN zygote and clinical pregnancy rates. Conclusions: VD replacement therapy contributes to follicle maturation by regulating intrafollicular oxidant/ antioxidant balance in PCOS patients.

Monitoring of oxidative stress and TNF-α status during the healing process in hair goats with metritis

Objective: This study aimed to monitor oxidative stress parameters including total antioxidant status (TAS) and total oxidant status (TOS), and tumor necrosis factor-alpha (TNF-α) level during the healing process in hair goats with metritis. &#x0D; Materials and Methods: This study was carried out on a total of 25 hair goats with metritis (n=10; Group 1) and healthy (n=15; Group 2). The beginning of the study was accepted as day 0. In both Group 1 and Group 2, blood samples were collected on days 0 (first measurement day), 14 (second measurement day) and 28 (third measurement day) of the study for TAS, TOS and TNF-α analyzes. In addition, oksidatif stress index (OSI) was calculated using TAS and TOS values.&#x0D; Results: It was found that TAS level decreased in Group 1 compared to Group 2 at the first measurement day (p

Evaluation of Total Oxidant Status, Antioxidant Status and Oxidative Stress Index in Patients with Recurrent Aphthous Stomatitis

Objective: We try to evaluate total oxidant status (TOS), total antioxidant status (TAS) and oxidative stress index (OSI) in patients with recurrent aphtous stomatitis (RAS) in our study. Methods: A total of 40 patients, 23 female and 17 male, with a mean age of 29, who applied to the dermatology outpatient clinic with the complaint of oral ulcers and were diagnosed with RAS and a total of 49 healthy controls, 33 female and 16 male, with a mean age of 24, were included in the study. Results: The TOS and OSI values of the RAS group were statistically significantly higher than the values of the control group. When the TAS values of both groups were compared; the TAS value of the RAS group was statistically indifferent from the TAS value of the control group. Conclusion: In patients with RAS, serum TOS, serum TAS and OSI values are affected in favour of oxidative processes. In the pathogenesis of RAS, oxidant substances and antioxidant-active substances are important.

Dietary Moringa oleifera Alters Periparturient Plasma and Milk Biochemical Indicators and Promotes Productive Performance in Goats.

The purpose of the current study was to explore the supplementing effects of Moringa oleifera leaf powder (MOLP) on plasma and milk biochemical indices and productive/reproductive performance of goats. A total of 30 healthy pregnant goats were randomly distributed (n = 10) into three experimental groups: control (M0) group (basal diet without MOLP), M2% group (basal diet + 2% MOLP), and M3.5% group (basal diet + 3.5% MOLP). The experiment started 2 months before parturition and continued till the first month of lactation. The plasma flavonoids were significantly increased in the M3.5% group during the entire experiment, whereas the total phenolic contents were enhanced only during the lactation period depending on the supplementation percentage. The amount of vitamin C increased significantly in M2% and M3.5% groups as compared to the M0 group. Supplementation of MOLP improved the plasma total antioxidant capacity by declining malondialdehyde concentration and total oxidant status values. The activities of superoxide dismutase and peroxidase enzymes were modified in M2% and M3.5% supplemented groups throughout the experiment, while the catalase activity was significantly influenced only during the lactation stage. The protein and lycopene contents in plasma were significantly improved in the M3.5% group, whereas the total sugars and carotenoid level was increased in both M2% and M3.5% groups. Dietary supplementation with 3.5% MOLP more effectively enhanced protease and amylase activities as compared to 2% supplementation. MOLP also improved the biochemical indices and antioxidant status of colostrum and milk. The milk yield, weight gain of the kids, and reproductive performance were high in M2% and M3.5% groups in comparison to the M0 group. These findings disclose that supplementing the diet with 3.5% MOLP improves antioxidant status, milk yield, and reproductive performance in goats.

Essential Oil Content, Antioxidative Characteristics and Enzyme Inhibitory Activity of Sideritis akmanii Aytaç, Ekici & Dönmez

Our research measures the essential oil analysis mineral substance profiles, total phenolic substance content, free radical scavenger properties, antioxidant capacity, and enzyme inhibitory activity of Sideritis akmanii Aytaç, Ekici & Dönmez, 1996. A mixture of S. akmanii plant roots and stems were used. Essential fatty acid components of S. akmanii were determined by gas chromatography-mass spectrometry and bioelement concentrations by inductively coupled plasma optical emission spectrometry. The antioxidant activity of extracts was screened by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities, total phenolic content, total antioxidant status (TAS), total oxidant status (TOS) analysis. Cholinesterase (ChE), α-glucosidase, α-amylase, and tyrosinase inhibitory activity was determined. The results demonstrated that the phenolic substance content was higher in methanol extract (144.08±2.01 μg gallic acid equivalent/mg extract). DPPH scavenging effect of S. akmanii methanol extract (73.2%) was higher than acetone extract (60.1%). TAS values of extract methanol and acetone were 2.32±0.4 and 2.38±0.2 μmol trolox Eq /g, TOS values were 4.88±0.6 and 5.04±0.5 μmol H2O2 Eq/g, and oxidative stress index values were 2.1±0.3 and 2.11±0.24 arbitrary units, respectively. Hexadecanoic acid (17.9%) was found as the main component in the plant essential oil. S. akmanii species was prominent with high Mg and Al concentrations. Anti-ChE activity was determined that acetone extract (42.95%±0.90; 217.37±0.81 mg galantamine equivalents [(GALAEs)/g] exhibited higher than methanol (33.33%±1.81; 208.76±1.62 mg GALAE/g). α-Amylase inhibition was high in methanol extract [53.62±1.85 mmol angiotensin converting enzymes (ACEs)/g extract] compared to acetone (47.73±0.92 mmol ACEs/g extract). The tyrosinase inhibitory activity of S. akmanii was determined very low inhibition of the reference compound. It has been determined that S. akmanii Aytaç, Ekici & Dönmez extracts have antioxidant properties and can inhibit acetylcholinesterase, α-glucosidase, α-amylase enzymes. This study is informative on future studies on S. akmanii a highly bioavailable species and very extensive studies should be carried out.

Oxidative stress and decreased Nrf2 level in pediatric patients with COVID-19.

The aim of this study was to investigate the change in nuclear factor erythroid 2‐related factor (Nrf2), which plays a critical role in cytoprotection against oxidative stress, in pediatric patients with coronavirus disease 2019 (COVID‐19) infection positivity, and to evaluate the relationship between Nrf2 and oxidative balance. The study included 40 children with confirmed COVID‐19 infection and 35 healthy children. The groups were compared in respect of Nrf2, total oxidant status (TOS), total antioxidant status (TAS), and oxidative stress index (OSI), in addition to clinical findings of fever, cough, shortness of breath, contact history, and demographic data of age and gender. The mean Nrf2 values and TAS levels were determined to be statistically significantly low (p < 0.001) and the TOS level and OSI were statistically significantly high in the children with COVID‐19 compared to the control group. A significant positive correlation was determined between Nrf2 and TAS (p < 0.01); as the Nrf2 value increased, so the TAS value increased. A significant negative correlation was determined between Nrf2 and TOS and OSI (p < 0.01); as the Nrf2 value increased, there was determined to be a significant decrease in the TOS and OSI values. COVID‐19 infection in pediatric patients causes a decrease in the Nrf2 level. By causing a decrease in the TAS level and an increase in the TOS and OSI levels, the decrease in Nrf2 may explain the tissue damage which can be caused by COVID‐19.

EFFECTS OF OCCUPATIONAL EXPOSURE TO IONIZING RADIATION ON OXIDATIVE STRESS AND INFLAMMATORY MARKERS IN HEALTHCARE WORKERS OF A UNIVERSITY HOSPITAL IN KONYA, TURKEY

OBJECTIVE Ionizing radiation (IR) has a wide area of use and its effects on human health have been discussed since its discovery. This study aimed to show oxidative stress and inflammation due to ionizing radiation exposure based on biomarkers in healthcare workers.&#x0D; METHOD This study was conducted with 172 people, who were exposed to IR in the work environment and those who did not have exposure to radiation. In this cross-sectional study, a data collection form was used to obtain data from the participants. In addition, 6 ml of blood was taken to measure their tumor necrosis factor (TNF)-alpha, total oxidant status (TOS), interleukin (IL)-10 and total antioxidant status (TAS) levels, and calculate their oxidative stress index (OSI) values.&#x0D; RESULTS In the ionizing radiation group, 50% of the participants were men, the mean age was 35.91±7.07 years, and the mean duration of employment was 9.80±7.1 years. The TOS, OSI, TNF-α and IL-10 values were higher and TAS was lower in the ionizing radiation group compared to the participants without exposure to ionizing radiation. Gender, smoking, alcohol use, presence of chronic diseases, regular medication use, antioxidant supplement use, and exposure to radiation for medical diagnosis and treatment within the last year did not affect oxidative stress and inflammation in the radiation workers. The cut-off values of the TOS, TAS, OSI, TNF-α and IL-10 biomarkers were also determined.&#x0D; CONCLUSION Occupational low-dose long-term exposure to ionizing radiation was found to increase oxidative stress and inflammation.

THE EFFECTS OF CHRONIC PERIODONTITIS AND OBESITY ON TOTAL ANTIOXIDANT/OXIDANT STATUS AND OXIDATIVE STRESS INDEX.

Both obesity and periodontal diseases are significant diseases that affect the quality of life. Recent studies have focused on the relationship between obesity and periodontal disease. The aim of this study is to determine the pathophysiological relationship between obesity and periodontal disease by evaluating the clinical periodontal parameters and oxidative status. The study included 80 individuals divided into four groups including 20 individuals in each group as following; periodontally healthy patients with normal weight, (NH), patients with chronic periodontitis and normal weight (NCP), periodontally healthy patients with obesity (OH) and patients with chronic periodontitis and obesity (OCP). Clinical periodontal parameters were recorded, and serum, saliva and gingival crevicular fluid (GCF) samples were obtained. Local and systemic levels of total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI) were assessed biochemically. No statistically significant difference was found among the groups regarding TAS, TOS and OSI values in serum and saliva samples (p>0.05). GCF-TAS values in NH group were statistically significantly higher compared with other groups (p<0,05) . GCF TOS values increased in obese groups (OH, OCP) compared with non-obese groups (NH, NCP) (p<0.05). Our results suggest that obesity and chronic periodontitis do not effect oxidant/antioxidant levels in serum and saliva. Many factors such as daily living conditions of the individual, stress and nutritional habits TAS and TOS levels of the individual may affect oxidative stress parameters. However, these factors could not be standardized in the study.

Effects of different ingredients on antioxidant and oxidant status of brewed roasted coffee

It was aimed to evaluate the effects of different ingredi-ents on total antioxidant sta-tus (TAS) and total oxidant status (TOS) of the brewed Brazil mild roasted coffee. Sugar, sucralose, butter, co-conut-oil, animal and plant-based milk types were add-ed and milk types&amp;sweeteners were combined separately. TAS and TOS were measured and oxidative stress indice (OSI) was calculated. TAS value of coffee with whole milk was the highest among all coffee types. TOS values of coffee with soy milk, with soy milk+sugar and soy milk+sucralose were lower than all other coffee types. When compared to OSI val-ues, coffee with soy milk, with soy milk+sugar and soy milk+sucralose had the lowest OSI values among all coffee types. Moreover, ad-dition of coconut-oil to cof-fee samples increased the TOS and OSI values of cof-fees. While the TOS and OSI of the sugar and su-cralose addition were found higher in comparison to plain coffee; TOS and OSI of the sucralose addition was lower than those sugar combinations. In conclu-sion, the OSI of the coffee may change depending on the alterations of chemical structures and nutritional matrices by the added in-gredients. The addition of soy milk or sucralose in-stead of sugar or whole cow milk instead of oil-based ingredients could be a promising strategy of reduc-ing the oxidative capacity.

Antioxidant Actions of Thymoquinone, Silymarin, and Curcumin on Experimental Aortic Ischemia-Reperfusion Model in Wistar Albino Rats.

Medical improvements are needed to prevent ischemia-reperfusion injury in thoracoabdominal aortic surgery. The aim of this study was to determine the antioxidant effects of thymoquinone, silymarin, and curcumin against ischemia-reperfusion injury associated with abdominal aorta. Twenty-five Wistar albino rats were included in the study. Sham, control, and treatment (thymoquinone, silymarin, and curcumin) groups were set in equal numbers. Ischemia-reperfusion was applied by clamping (120 minutes) and de-clamping (60 minutes) the infrarenal aorta of all groups, except the sham group. Before reperfusion, thymoquinone, silymarin, and curcumin were given intraperitoneally to the treatment groups. After reperfusion, blood samples were taken from the right ventricle. Total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) were studied in serum samples and histopathological examination was performed on the gastrocnemius muscle. There was a significant difference in TOS and OSI values between the control and sham groups. Both values were found higher in the control group than in the sham group (P<0.05). OSI values were found to be lower in the thymoquinone group compared to the control group (P<0.05). All three parameters were found to be lower in the silymarin group than in the control group (P<0.05). TAS and TOS levels were found to be higher in the curcumin group than in the control group (P<0.05). There was no histopathological difference between the groups. Silymarin and thymoquinone administration decreases oxidative stress in experimental aortic ischemia-reperfusion injury. Antioxidant effect of curcumin was lower than silymarin and thymoquinone.

Effect of taxifolin on cyclophosphamide-induced oxidative and inflammatory bladder injury in rats.

The role of oxidative stress and inflammation in the pathogenesis of cyclophosphamide-related side effects has been demonstrated in previous studies. This study aimed to investigate the effect of taxifolin, due to its antioxidant and anti-inflammatory properties, on cyclophosphamide-induced oxidative and inflammatory bladder injury in albino Wistar rats. The taxifolin+cyclophosphamide (TCYC) group was given 50 mg/kg of taxifolin orally by gavage. Normal saline was used as a solvent for the cyclophosphamide (CYC) group and the healthy control (HC) group. One hour after taxifolin administration, 75 mg/kg of cyclophosphamide was intraperitoneally injected in the TCYC and CYC groups. This procedure was repeated once a day for 30 days. At the end of this period, biochemical markers were studied in the excised bladder tissues and histopathological evaluations were conducted. In the histopathological evaluation of the CYC group, severe epithelial irregularity, dilatation, congestion, and polymorphonuclear leukocyte accumulation in the vascular structures were observed. Additionally, the malondialdehyde (MDA), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) levels, the total oxidant status (TOS), and the oxidative stress index (OSI) values were significantly higher, and the total glutathione (tGSH) levels and total antioxidant status (TAS) were significantly lower in the CYC group in comparison to the HC group (P<0.001). Taxifolin reduced the cyclophosphamide-induced increases in the MDA, TNF-α, IL-1β, and IL-6 levels and the TOS and OSI values; it decreased the tGSH and TAS levels and reduced histopathological damage (P<0.001). Taxifolin may be useful in the treatment of cyclophosphamide-induced bladder damage.

Effects of kefir on paraoxanase activity (PON1), total antioxidant status (TAS), total oxidant status (TOS), and serum lipid profiles in smokers and non-smokers

Some scientific evidence indicates that antioxidant-rich diets may prevent the negative effects of free radicals. In this study, we aimed to evaluate the effects of kefir consumption on paraxonase-1 (PON1) activity, total antioxidant status (TAS), total oxidant status (TOS), and serum lipid parameters in smokers and non-smokers. At baseline, PON1 activity, TAS, and high-density lipoprotein cholesterol (HDL-C) levels were lower (P<0.05, P<0.01, and P<0.05, respectively) whereas TOS, triglyceride (TG), and light-density lipoprotein cholesterol (LDL-C) levels were higher (all P<0.05) in smokers compared to non-smokers. There were no significant differences in total cholesterol (TC) levels between two groups (P>0.05). After 6-week of kefir consumption, PON1 and TAS values were significantly increased in smokers (both P<0.05) and non-smokers (P<0.05 and P<0.01, respectively). Kefir consumption did not have any significant effect on TOS, HDL-C, LDL-C, TC, and TG values both in smokers (all P>0.05) and non-smokers (all P>0.05). Regular consumption of kefir increases the PON1 activity and TAS value in both smokers and non-smokers. It can be concluded that kefir plays an important role in favor of antioxidants in the formation of antioxidant/oxidant balance in both smokers and non-smokers.

Antioxidant and antimicrobial potentials of mycelial extracts of Hohenbuehelia myxotricha grown in different liquid culture media.

In addition to their nutritional properties, mushrooms have emerged as a health supplement because of their medicinal potential. Many studies have shown that mushrooms exhibit important biological activities. Here, the antioxidant and antimicrobial activities of Hohenbuehelia myxotricha (Lév.) Singer mycelia cultivated on Sabouraud dextrose broth (SDB) and glucose peptone yeast (GPY) medium were studied. The total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) of ethanolic extracts of mycelia were measured using Rel Assay kits. The antioxidant and oxidant potentials of H. myxotricha mycelial extracts were determined for the first time in the present study. The highest TAS, TOS, and OSI values of H. myxotricha were 5.416 ± 0.150 mmol/l, 1.320 ± 0.156 μmol/l, and 0.024 ± 0.003, respectively. Ethanolic mycelial extracts of H. myxotricha showed antimicrobial activities at concentrations from 25 to 200 μg/ml against all the studied bacteria (Acinetobacter baumannii, Enterococcus faecalis, Escherichia coli, Staphylococcus aureus, methicillin-resistant S. aureus, and Pseudomonas aeruginosa ) and fungi (Candida albicans, C. glabrata, and Issatchenkia orientalis ) tested by the agar dilution method. The antifungal activity of the extract was more significant than its antibacterial activity. The antioxidant, oxidant, and antimicrobial potentials of H. myxotricha mycelia varied depending on the culture media used. GPY medium was more suitable for the synthesis of antibiotic compounds against E. coli, while SDB medium was more appropriate for producing metabolites with antioxidant and antifungal properties. Based on the results, ethanolic extract of H. myxotricha mycelia showed a significant pharmacological potential and could be used as a natural antioxidative and antimicrobial source for health benefit.

Relationship Between Anti-DFS70 Autoantibodies and Oxidative Stress.

Background:The anti-DFS70 autoantibodies are one of the most commonly and widely described agent of unknown clinical significance, frequently detected in healthy individuals. It is not known whether the DFS70 autoantibodies are protective or pathogenic. One of the factors suspected of inducing the formation of anti-DFS70 antibodies is increased oxidative stress. We evaluated the coexistence of anti-DFS70 antibodies with selected markers of oxidative stress and investigated whether these antibodies could be considered as indirect markers of oxidative stress.Methods:The intensity of oxidative stress was measured in all samples via indices of free-radical damage to lipids and proteins such as total oxidant status (TOS), concentrations of lipid hydroperoxides (LPH), lipofuscin (LPS), and malondialdehyde (MDA). The parameters of the non-enzymatic antioxidant system, such as total antioxidant status (TAS) and uric acid concentration (UA), were also measured, as well as the activity of superoxide dismutase (SOD). Based on TOS and TAS values, the oxidative stress index (OSI) was calculated. All samples were also tested with indirect immunofluorescence assay (IFA) and 357 samples were selected for direct monospecific anti DFS70 enzyme-linked immunosorbent assay (ELISA) testing.Results:The anti-DFS70 antibodies were confirmed by ELISA test in 21.29% of samples. Compared with anti-DFS70 negative samples we observed 23% lower concentration of LPH (P = .038) and 11% lower concentration of UA (P = .005). TOS was 20% lower (P = .014). The activity of SOD was up to 5% higher (P = .037). The Pearson correlation showed weak negative correlation for LPH, UA, and TOS and a weak positive correlation for SOD activity.Conclusion:In samples positive for the anti-DFS70 antibody a decreased level of oxidative stress was observed, especially in the case of samples with a high antibody titer. Anti-DFS70 antibodies can be considered as an indirect marker of reduced oxidative stress or a marker indicating the recent intensification of antioxidant processes.

Oxidant/antioxidant potentials and heavy metal levels of Pisolithus arhizus and its effects on cardiovascular diseases

Pisolithus arhizus (Scop) Rauschert is a cosmopolitan mushroom in warm temperate regions of the world and forms ectomycorrhizas associations with a wide range of tree species (both angiosperms and gymnosperms). P. arhizus samples were collected from a pine forest in Antalya province (Turkey). Powdered mushroom samples were extracted with ethanol (EtOH) using a Soxhlet apparatus at 50 °C, then concentrated under pressure at 40 °C in a rotary evaporator, and stored at 4 °C in airtight containers. Rel Assay Kits were used to determine the total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) of mushroom extracts. The elemental contents of the mushrooms were then determined using the atomic absorption spectrophotometer. It was determined that the heavy metal content in P. arhizus were found to be generally at optimal levels and the TOS value of mushroom was exceptional. Heavy metals are toxic, they may have chronic degenerative changes on organs. Vascular effects of heavy metals may contribute to a variety of pathologic conditions. Heavy metals resulting in pathophysiological changes causes atherogenic events like increased oxidative stress, inflammatory response, and coagulation activity. It has been determined that P. arhizus may be an important source of antioxidants.

Evaluation of The Relationship Between Apelin 36 and Oxidative Stress In Patients With General Anxiety Disorder

Objective: The aim of this study was to evaluate the relationship between apelin-36 and oxidative parameters and Generalized Anxiety Disorder (GAD). Apelin which prevents hippocampal neuronal death is an endogenous ligand for G protein bound APJ receptors in the central nervous system. Oxidative Stress were occurred by free radicals which caused apoptosis in the hypothlamus, hippocampus and amygdala regions of the Central Nervous System (CNS).Methods: In this study, 61 patients diagnosed generalized anxiety disorder at psychiatry polyclinic and 55 control subjects were enrolled. The Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) and the Hamilton Anxiety Rating Scale (HARS) were used in this study and they were filled by the patients and healthy individuals. Serum apelin-36 level was measured by using an ELISA kit. Total antioxidant status (TAS) and Total Oxidant Status (TOS) in the serum was measured by an automated system. The data were analyzed by using the SPSS.Results: It was found that serum apelin-36, TOS and Oxidative stress index (OSI) levels were significantly lower in patients’ group than controls. In addition, negative correlation was detected between apelin 36 levels and HARS scores, TOS and OSI values in patients’ group. TAS values were found as similar between the patient and control group. There was no correlation between TAS and Apelin 36 in the patient group.Conclusion: In this study it was found that serum apelin-36, TOS and OSI levels were low in GAD. According to the results, Apelin-36 and oxidative stress may play a role in the etiopathogenesis of Generalized Anxiety Disorder.