The Modulatory Effects of Pentoxifylline in Biochemical Changes Induced By 17α-Ethinyl Estradiol in the Rat Model

Background: Ethinylestradiol (EE) has induced cholestasis and hepatotoxicity in animal studies through reducing bile acid uptake by hepatocytes and induce of oxidative stress. Pentoxifylline (PTX) is a drug that by inhibition of release or transcription of proinflammatory cytokine cause prevents oxidative stress of liver cell and reduction of damage. We aimed to evaluate the effects of pentoxifylline on liver injury induced by Ethinylestradiol in rats. Methods: Twenty-four female Wistar rats (300±20 gr) were divided into four groups, equally. Duration of treatment was 5 consecutive days for each group. The control group Simultaneously received orally and subcutaneously normal saline. PTX group Simultaneously received Pentoxifylline orally and normal saline subcutaneously, EE Group Simultaneously received EE subcutaneously and normal saline orally. In the EE+PTX group, rats Simultaneously received EE subcutaneously and PTX orally. Rats were anesthetized and blood and tissue samples were collected for measurement of hematological and biochemical parameters. Results: The EE administration increased the serum levels of ALP and MDA significantly. The EE administration also decreased albumin and GPX levels were significant. These aberrations were improved by PTX treatment in EE + PTX group. Most of hematological parameters were not significant by the EE. The plasma level of TNF- in the PTX+ES treated group showed a significant decrease in comparison to that in the ethinyl estradiol group. Conclusion: PTX has partial capacity to protect against liver changes induced by Ethinyl Estradiol.

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The Effect of Immunosuppression on Selected Antioxidant Parameters in Patients with Graves’ Disease with Active Thyroid-Associated Orbitopathy

Experimental and Clinical Endocrinology & Diabetes ◽

10.1055/a-1274-0998 ◽

2020 ◽

Author(s):

Magdalena Londzin-Olesik ◽

Beata Kos-Kudla ◽

Jacek Karpe ◽

Aleksandra Nowak ◽

Mariusz Nowak

Keyword(s):

Oxidative Stress ◽

Clinical Symptoms ◽

Immunosuppressive Treatment ◽

Serum Vitamin ◽

Serum Levels ◽

Paraoxonase 1 ◽

Control Group ◽

Graves Disease ◽

Methylprednisolone Treatment ◽

Antioxidant Parameters

Abstract Background and Study Aims Thyroid-associated orbitopathy, the most common extrathyroidal manifestation of Graves’ disease, is an autoimmune inflammation of orbital soft tissue. We report the study assessing the effect of immunosuppressive treatment with methylprednisolone on selected antioxidant parameters in patients with Graves’ disease with active thyroid-associated orbitopathy. Patients and Methods Activity and serum levels of selected antioxidant parameters as well as lipid peroxidation products were determined in a group of 56 patients with active thyroid-associated orbitopathy at three time-points: at baseline, after the discontinuation of intravenous methylprednisolone treatment and at 3 months after the discontinuation of additional oral methylprednisolone treatment. A control group consisted of 20 healthy age- and sex-matched volunteers. Results We found an increased activity of superoxide dismutase and glutathione peroxidase and increased serum levels of uric acid, malondialdehyde and conjugated dienes, as well as a reduced activity of paraoxonase-1 and reduced serum vitamin C level in the study group at baseline. Systemic intravenous and oral methylprednisolone therapy led to normalization of activity and concentration of the most studied parameters. Conclusion Results of our study confirmed that oxidative stress is one of the factors involved in the pathogenesis of thyroid-associated orbitopathy and the methyloprednisolone treatment is effective in reducing both clinical symptoms and oxidative stress in patients with this disease.

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Abstract P211: Single High Na + Ingestion Leads To An Increase In Oxidative Stress And Triggers Inflammation.

Hypertension ◽

10.1161/hyp.78.suppl_1.p211 ◽

2021 ◽

Vol 78 (Suppl_1) ◽

Author(s):

Ginette Bordcoch ◽

Ivan Tavera Busso ◽

Juan Masjoan Juncos ◽

Luis I Juncos

Keyword(s):

Oxidative Stress ◽

The United States ◽

Male Rats ◽

Control Group ◽

Aortic Tissue ◽

Tissue Samples ◽

Extracellular Signal ◽

High Prevalence ◽

Markers Of Oxidative Stress ◽

The Difference

Hypertension has been linked to a progressive increased in oxidative stress and inflammation. The high prevalence of hypertension poses a great risk to public health as 108 million adults in the United States have the condition. For that reason, a better understanding of the link between a high Na+ intake and the development of hypertension is of crucial importance. We hypothesize that a single ingestion of a high Na+ solution leads to increased oxidative stress and triggers an inflammatory response. Wistar 200-250 g male rats had gastric infusions through the esophagus. Groups were infused with 8 mL liquid Vaseline (Control), 8 mL of NaCl 0.684 M (4% m/v), and 8 mL of NaCl 1.368 M (8% m/v). After infusion, blood was collected at different time points during the first hour. Tissue samples were obtained from the aorta, heart, and kidney. Electron Microscopy (EM) was performed on all tissues, which were also analyzed for molecular markers of oxidative stress: Superoxide Dismutase (SOD) and Malondialdehyde (MDA), and an inflammation marker: Extracellular Signal-Regulated Kinase (ERK). At 2 and a half minutes, serum Na+ concentration was unchanged in the control group compared to an increase observed in animals receiving 4% and 8% Na+ with concentrations of 135±1.4 mEq/L, 141±2.0 mEq/L, and 140±1.2 mEq/L respectively. At the 1-hour time point after infusion, the difference was further increased in the 8% group with serum concentrations of 135±1.8 mEq/L, 140±1.5 mEq/L, and 152±1mEq/L respectively (p<0.05). There was an increase in oxidative stress in the aorta from values of 36.22±4.64 mU/mg SOD and 0.131±0.013 pg/mL MDA in the control group, to 47.11±4.89 mU/mg SOD and 0.291±0.022 pg/mL MDA in the 8% group (p<0.05 in both cases). The same was observed in the heart, where values were: 174.6125.26 mU/mg SOD, 0.026±0.007 pg/mL MDA in controls, and 259.22±21.98 mU/mg SOD, 0.215±0.073 pg/mL MDA in 8% group (p<0.05 both cases). Increased ERK in aortic tissue, values of 0.29±0.03 pg/mL in controls, 2.68±0.18 pg/mL in 4% group and 3.97±0.68pg/mL in 8% group (p<0.05) suggest increased inflammation. We conclude that the elevation in serum Na+ concentration that follows Na+ ingestion leads to increased oxidative stress and inflammation.

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The Importance of Antioxidant Status in Gastric Intestinal Metaplasia

Journal of Medical Biochemistry ◽

10.5937/jomb0-29349 ◽

2021 ◽

Author(s):

Nilay Danis ◽

Aysegul Ertinmaz Ozkan ◽

Fatih Karatas ◽

Cagri Cakici ◽

Turkan Yigitbasi ◽

...

Keyword(s):

Oxidative Stress ◽

Intestinal Metaplasia ◽

Prognostic Marker ◽

Smoking Status ◽

Serum Levels ◽

Control Group ◽

Gastric Intestinal Metaplasia ◽

Oxidative Stress Status ◽

Cancer Types ◽

The Mean

Background and Aim: Oxidative stress status in different cancer types was investigated before, but not studied in gastric intestinal metaplasia to the best of our knowledge. Purpose of this study is to examine whether there is a difference between oxidative stress status in patients with intestinal metaplasia (IM) compared to individuals without IM, we compared the serum levels of disulfide (SS), total thiol (TT) and native thiol (NT). Patients and Methods: This was a prospective, non-randomized case-control study including 67 patients with histopathologically confirmed IM and 60 individuals demographically matched in terms of age, gender, BMI, smoking status, and chronic diseases as control group. Results: The mean NT, TT and NT to TT(NT/TT) ratios were statistically significantly higher in IM group compared to controls [(351.71±81.9µmol/L vs. 271.82±54.13µmol/L, p=0.000),(391.5±92.69µmol/L vs. 308.59±55.53 µmol/L, 0.000) and (0.89±0.6 vs. 0.87±0.29, p=0.022), respectively].The mean SS to TT(SS/TT) ratio was significantly lower in IM group than control group (0.050±0.31 vs. 0.060±0.014, P=0.022). Median SS and mean SS/NT ratio was similar in both groups[16.3 (3.3 – 78) vs. 18.3 (10 – 32.7), p=0.271 and 0.055 ± 0.041 vs. 0.070 ± 0.019, p=0.068, respectively). In ROC analysis, cut off value of SS/NT for IM was found 0.062, in regression analysis, SS/NT<0.062 was found as an independently prognostic marker for IM (OR, 2.38; 95%CI: 1.168 - 4.865, P=0.017). Conclusion: SS /NT ratio lower than 0.062 was found as an independently prognostic marker for IM. This ratio could help to distinguish which patients should be followed closely for gastric cancer.

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The effect of vitamin C on Endosulfan-induced oxidative stress parameters in prepubertal rats

Biomedicine ◽

10.51248/.v39i2.203 ◽

2020 ◽

Vol 39 (2) ◽

pp. 333-338

Author(s):

Kalaivani Manokaran ◽

Vasanthalaxmi Krishnananda Rao ◽

Nilima . ◽

Manjula Shimoga Durgoji Rao ◽

Sucheta Prasanna Kumar

Keyword(s):

Oxidative Stress ◽

Vitamin C ◽

Wistar Rats ◽

Statistical Significance ◽

Treated Group ◽

Reproductive Organs ◽

Protective Role ◽

Control Group ◽

Group I ◽

Testicular Weight

Introduction and Aim: Oxidative stress plays a very important role in endosulfan-induced toxic effects on reproductive organs. Vitamin C is a potent antioxidant which plays an important role in decreasing oxidative stress. The present study was aimed to investigate the protective role of vitamin C against endosulfan-induced testicular toxicity in Wistar rats. To investigate a protective effect of vitamin C against endosulfan induced toxicity on biochemical changes. Materials and Methods: Seventy male neonatal Wistar rats were divided into seven groups. The group I was taken as the control group, the endosulfan-treated were grouped into II (3 mg/kg body weight (BW) and group III (6 mg/kg BW), Group IV (9 mg/kg BW) and Group V (12 mg/kg BW). Group VI (9 mg/kg BW) and group VII (12 mg/kg BW) were pretreated with vitamin C (20 mg/kg BW) for 60 days. After the experimental procedures, the testicular weight, lactate dehydrogenase (LDH) enzyme and testosterone in plasma, LDH, steroidogenic enzymes 3?-HSD and 17?-HSD in testis were evaluated. One-way ANOVA was used to determine the statistical significance. Results: Significant improvement in the testicular weight (P<0.05) , LDH (P<0.05) levels both in plasma and testis, increase in testosterone(P<0.001) and steroidogenic enzyme levels(P<0.001) was observed in the group pretreated with vitamin C treated group when compared to the endosulfan treated group. Conclusion: Vitamin C decreases the toxic effect of endosulfan on testis. The present action might be due to its antioxidative properties.

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Prolonged use of finasteride-induced gonadal sex steroids alterations, DNA damage and menstrual bleeding in women

Bioscience Reports ◽

10.1042/bsr20191434 ◽

2020 ◽

Vol 40 (2) ◽

Author(s):

Gadah Albasher ◽

May Bin-Jumah ◽

Saleh Alfarraj ◽

Fatimah Al-Otibi ◽

Nouf K. Al-Sultan ◽

...

Keyword(s):

Gene Expression ◽

Dna Damage ◽

Sex Steroids ◽

Serum Levels ◽

Treated Group ◽

Heavy Menstrual Bleeding ◽

Menstrual Bleeding ◽

Control Group ◽

Dna Integrity ◽

Adverse Health Effects

Abstract The aim of the present study was to examine the effect of prolonged use of finasteride on serum levels of dihydrotestosterone (DHT), estradiol (E2), progesterone, testosterone and androstenedione in women during the menstrual period. Further, to screen and compare the 5α-reductase activities through the expression of SRD5A1, SRD5A2 and AR gene and to determine the level of VEGF, VKOR and SAA gene expression and DNA damage. A total of 30 Saudi women aged between 25 and 35 years were enrolled in the study. The selected women were divided into two groups. The first group (n = 15) received 5 mg finasteride/day for prolonged period of one year and second group (n = 15) was taken as a healthy control. ELISA technique was used for measuring the serum levels of the targeted hormones, and Comet assay was used for checking the DNA integrity. Our findings revealed significant decrement of DHT, E2, progesterone and androstenedione levels and elevated levels of testosterone in group treated with daily oral doses of 5 mg finasteride/day compared with the control subjects. mRNA expression suggested that finasteride has concrete effects on the gene expression of the selected genes from the treated group in comparison with the control group. In addition, finasteride induced DNA damage, and heavy menstrual bleeding was noted in women treated with finasteride. In conclusion, the present findings revealed that finasteride has adverse health effects in women associated with gonadal sex steroids alterations, DNA damage and heavy menstrual bleeding with no consensus in the treatment of androgenetic alopecia in women.

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Peripheral Administration of RF9 Does Not Affect Hypothalamic-PituitaryGonadal Axis in Normal Fed Adult Male Macaque

Case Reports in Obstetrics Gynecology and Reproductive ◽

10.31487/j.crogr.2020.02.03 ◽

2020 ◽

pp. 1-5

Author(s):

Aalia Batool ◽

Madiha Wazir ◽

Rahim Ullah ◽

Aalia Batool ◽

Rabia Naz ◽

...

Keyword(s):

Adult Male ◽

Normal Saline ◽

Time Windows ◽

Treated Group ◽

Plasma Testosterone ◽

Control Group ◽

Hpg Axis ◽

Testosterone Levels ◽

Physiological Conditions ◽

Short Time

Stress represses hypothalamic-pituitary-gonadal axis (HPG-axis) but RF9, a synthetic peptide, rescues such repression. To assess the role of RF9 in regulating HPG-axis under normal physiological conditions in higher primates, RF9 was administered to intact adult male rhesus monkeys and response of the HPG-axis was examined by measuring plasma testosterone as an end parameter of the axis. Control group (n=4) received normal saline whereas the treated group (n=4) received RF9. On the first day of experiment, four bolus injections of normal saline (1ml/animal) were administered intravenously at 2-hr interval to the control monkeys. Similarly, on the second day of experiment, treated group received four iv bolus injections of RF9 (0.1mg/kg BW) at 2-hr interval. Serial blood samples were collected at 20 min interval during a 6-hr period which started just after first saline/RF9 injection. Plasma testosterone levels were measured by using a specific EIA. Overall means of plasma testosterone levels and plasma testosterone area under curve (AUC) and overall mean testosterone and mean testosterone AUC in short time windows following each injection of RF9 and saline were comparable between the groups. Our results demonstrate that RF9 has no role in regulating HPG-axis under normal physiological conditions in adult male monkeys.

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Effects of l-Carnitine on the Follicle-Stimulating Hormone, Luteinizing Hormone, Testosterone, and Testicular Tissue Oxidative Stress Levels in Streptozotocin-Induced Diabetic Rats

Journal of Evidence-Based Integrative Medicine ◽

10.1177/2515690x18796053 ◽

2018 ◽

Vol 23 ◽

pp. 2515690X1879605 ◽

Cited By ~ 8

Author(s):

Nourollah Rezaei ◽

Tahereh Mardanshahi ◽

Majid Malekzadeh Shafaroudi ◽

Saeed Abedian ◽

Hamid Mohammadi ◽

...

Keyword(s):

Oxidative Stress ◽

Luteinizing Hormone ◽

Follicle Stimulating Hormone ◽

Serum Levels ◽

Diabetic Rats ◽

Diabetic Group ◽

Control Group ◽

Group Vi ◽

Group I ◽

Stimulating Hormone

The present study was designed to investigate the antioxidant property of l-carnitine (LC) on serum levels of follicle-stimulating hormone (FSH), luteinizing hormone (LH), testosterone (TH) and testis oxidative stress in streptozotocin (STZ)-induced diabetic rats. The rats were divided into the following groups: group I, control; group II, LC 100 mg/kg/d; group III, diabetic; and groups IV to VI, diabetic rats treated with 50, 100, and 200 mg/kg/d of LC, respectively. Daily injections were given intraperitoneally for 7 weeks. At the end of experimental period, after sacrificing the rats, FSH, LH, TH, total antioxidant capacity (TAC), malondialdehyde (MDA), glutathione (GSH), catalase (CAT), mitochondrial function (MTT), protein carbonyl (PC), and reactive oxygen species (ROS) levels were measured. STZ caused an elevation of MDA, ROS, and PC ( P < .001) with reduction of GSH, CAT, TAC, and MTT ( P < .001) in the serum levels. Group VI had significantly increased FSH, LH, and TH levels versus the untreated diabetic group ( P < .001). Although groups V and VI significantly decreased MDA ( P < .001), PC ( P < .01), and ROS ( P < .01) compared with the untreated diabetic group; only in group VI, the activity of GSH ( P < .001), CAT ( P < .01), TAC ( P < .001), and MTT ( P < .001) significantly increased. The results of the present study suggest that LC decreased diabetes-induced oxidative stress complications and also improved serum level of FSH, LH, and TH by reducing levels of lipid peroxidation and increasing antioxidant enzymes.

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Hepatic Histomorphological Changes and Oxidative Stress Profile of Clarias gariepinus (Burchell, 1822) Juveniles Fed with Sodium Propanoate-Preserved Diets

Notulae Scientia Biologicae ◽

10.15835/nsb10410316 ◽

2018 ◽

Vol 10 (4) ◽

pp. 460-465

Author(s):

Patrick E. ABA ◽

Ifeanyi E. UZOCHUKWU ◽

Nelson I. OSSAI ◽

Ifeanyi G. EKE

Keyword(s):

Oxidative Stress ◽

Biological Effects ◽

Clarias Gariepinus ◽

Basal Diet ◽

Serum Levels ◽

Control Group ◽

Stress Profile ◽

Fish Feed ◽

Inflammatory Parameters ◽

Significant Difference

Sodium propanoate is in the list of approved feed preservatives. However, there is dearth of information on its biological effects on the C. gariepinus. The present study investigated the effect of sodium propanoate-preserved feed on the hepatic histomorphometric changes, oxidative stress and inflammatory parameters of C. gariepinus juveniles. One hundred juveniles of mixed sexes, assigned into 5 groups of 20 fish per group, with each group consisting of 2 replicates of 10 fish, were used for the investigation. Group A juveniles were fed basal diet, while groups B-E received basal diet incorporated with sodium propanoate at the rate of 25, 50, 75 and 100 g/15 kg of feed respectively. Treatments were done two times daily for 8 weeks. Samples (sera and liver) were collected on the last day for evaluation of a few biochemical parameters (malondialdehyde values, catalase activity, C-reactive protein levels) and histomorphometric alterations in the liver. Results indicated that fish in groups D and E had higher catalase activities, lower serum levels of C-reactive proteins and an intact hepatic histomorphormetry when compared with the control group. There was no significant difference in the plasma malondialdehyde values in all the groups. It was concluded that preservation of fish feed with sodium propanoates improved antioxidant status of C. gariepinus and protected liver histology.

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Supplementation of kaempferol to in vitro maturation medium regulates oxidative stress and enhances subsequent embryonic development in vitro

Zygote ◽

10.1017/s0967199419000674 ◽

2019 ◽

Vol 28 (1) ◽

pp. 59-64

Author(s):

Yuhan Zhao ◽

Yongnan Xu ◽

Yinghua Li ◽

Qingguo Jin ◽

Jingyu Sun ◽

...

Keyword(s):

Oxidative Stress ◽

Reactive Oxygen Species ◽

Membrane Potential ◽

Mitochondrial Membrane Potential ◽

Mitochondrial Membrane ◽

Caspase 3 ◽

Treated Group ◽

Control Group ◽

Oxygen Species

SummaryKaempferol (KAE) is one of the most common dietary flavonols possessing biological activities such as anticancer, anti-inflammatory and antioxidant effects. Although previous studies have reported the biological activity of KAE on a variety of cells, it is not clear whether KAE plays a similar role in oocyte and embryo in vitro culture systems. This study investigated the effect of KAE addition to in vitro maturation on the antioxidant capacity of embryos in porcine oocytes after parthenogenetic activation. The effects of kaempferol on oocyte quality in porcine oocytes were studied based on the expression of related genes, reactive oxygen species, glutathione and mitochondrial membrane potential as criteria. The rate of blastocyst formation was significantly higher in oocytes treated with 0.1 µm KAE than in control oocytes. The mRNA level of the apoptosis-related gene Caspase-3 was significantly lower in the blastocysts derived from KAE-treated oocytes than in the control group and the mRNA expression of the embryo development-related genes COX2 and SOX2 was significantly increased in the KAE-treated group compared with that in the control group. Furthermore, the level of intracellular reactive oxygen species was significantly decreased and that of glutathione was significantly increased after KAE treatment. Mitochondrial membrane potential (ΔΨm) was increased and the activity of Caspase-3 was significantly decreased in the KAE-treated group compared with that in the control group. Taken together, these results suggested that KAE is beneficial for the improvement of embryo development by inhibiting oxidative stress in porcine oocytes.

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Staphylococcus aureus Infection Induced Oxidative Imbalance in Neutrophils: Possible Protective Role of Nanoconjugated Vancomycin

ISRN Pharmacology ◽

10.5402/2012/435214 ◽

2012 ◽

Vol 2012 ◽

pp. 1-11 ◽

Cited By ~ 4

Author(s):

Subhankari Prasad Chakraborty ◽

Panchanan Pramanik ◽

Somenath Roy

Keyword(s):

Oxidative Stress ◽

Staphylococcus Aureus ◽

Cell Damage ◽

Treated Group ◽

Protective Role ◽

Control Group ◽

Similar Dose ◽

Cellular Components

Staphylococcus aureus infection causes oxidative stress in neutrophils. The immune cells use reactive oxygen species (ROS) for carrying out their normal functions while an excess amount of ROS can attack cellular components that lead to cell damage. The present study was aimed to test the protective role of nanoconjugated vancomycin against vancomycin-sensitive Staphylococcus aureus (VSSA) and vancomycin-resistant Staphylococcus aureus (VRSA) infection induced oxidative stress in neutrophils. VSSA- and VRSA-infection were developed in Swiss mice by intraperitoneal injection of 5×106 CFU/mL bacterial solutions. Nanoconjugated vancomycin was treated to VSSA- and VRSA-infected mice at its effective dose for 10 days. Vancomycin was treated to VSSA and VRSA infected mice at similar dose, respectively, for 10 days. The result reveals that in vivo VSSA and VRSA infection significantly increases the level of lipid peroxidation, protein oxidation, oxidized glutathione level, and nitrite generation and decreases the level of reduced glutathione, antioxidant enzyme status, and glutathione-dependent enzymes as compared to control group; which were increased or decreased significantly near to normal in nanoconjugated vancomycin-treated group. These finding suggests the potential use and beneficial protective role of nanoconjugated vancomycin against VSSA and VRSA infection induced oxidative imbalance in neutrophils.

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