scholarly journals The antioxidant role of Sideritis caesarea infusion against TCA toxicity in rats

2010 ◽  
Vol 105 (5) ◽  
pp. 663-668 ◽  
Author(s):  
Ismail Celik ◽  
Mehmet Salih Kaya
Keyword(s):  
Superoxide Dismutase ◽  
Green Tea ◽  
Antioxidant Properties ◽  
Control Group ◽  
Antioxidant Enzyme Activities ◽  
Aerial Parts ◽  
Mda Content ◽  
Group B ◽  
The Brain

Sideritis caesarea (SC) Duman, Aytac&Baser is a member of the Lamiaceae family. The present study was designed to investigate the antioxidant properties of the aerial parts of island green tea SC against TCA effects in rats. Biomarkers selected for monitoring antioxidant capacity were the activities of glutathione reductase (GR), superoxide dismutase (SOD), glutathione-S-transferase, catalase (CAT), GSH level and malondialdehyde (MDA) content in various organs of rats. Three experimental groups, A (untreated = control), B (only TCA-treated) and C (TCA+SC-treated), were studied. At the end of the 50 d experiment, the MDA content in tissues increased significantly in group B, whereas no significant changes were observed in group C as compared with that of the control group. Antioxidant enzyme activities such as SOD and CAT increased significantly in the brain, liver and kidneys of group B but decreased significantly in group C as compared with group B. The GSH level and GR activity increased significantly in the brain and liver of group C as compared with the control and TCA-exposed rats. Hence, the study reveals that the constituents present in SC impart protection against chemical-induced oxidative injury that may result in the development of cancer.

scholarly journals The effect of inhaling mercury (Hg) on the hepar cells and the role of green tea extract as antioxidant

2011 ◽  
Vol 23 (3) ◽  
Author(s):  
Dhona Afriza
Keyword(s):  
Body Weight ◽  
Green Tea ◽  
Positive Control ◽  
Negative Control ◽  
Green Tea Extract ◽  
Control Group ◽  
Group B ◽  
Tea Extract ◽  
Group D

This research aimed to identify the effect of inhaling mercury on the hepar cells of white mice and the role of green tea extract as an antioxidant on such hepar cells having exposed to mercury histopathologically. It was an experimental research by using 48 male white mice (Mus musculus) as the sample. The sample was divided into 8 groups i.e.: A, B, C, and D, which were given treatment for 3 and 6 weeks. Each group consisted of 6 mice. A group was a negative control which did not get any treatment. Group B as a positive control group was exposed to mercury. Group C was exposed to mercury and was given green tea extract at dosage 0.52 mg/20 gr of body weight. Group D was exposed by mercury and was given green tea extract at dosage 1.04 mg/ 20 gr of body weight. All white mice in the group B, C, and D were exposed to mercury through inhalation for 4 hours daily. To identified the effect of mercury, the hepar cells in all 4 groups were examined at the 3rd and 6th week by making histopathologic preparation in the Histopathology Laboratory Faculty of Medicine Universitas Andalas. Then, the preparation was examined through Binocular Light Microscope in ordered to see the deficient occurred. The data obtained were analyzed by ANOVA method and independent T-test with confidence level = 95%. It was revealed that the hepar cells that were being exposed to mercury regularly were being degenerates. Then, the amount of green tea extract given reduces the degeneration occurred.

scholarly journals Role of Nitric Oxide in Regulation of Brain Stem Circulation during Hypotension

1997 ◽  
Vol 17 (10) ◽  
pp. 1089-1096 ◽  
Author(s):  
Kazunori Toyoda ◽  
Kenichiro Fujii ◽  
Setsuro Ibayashi ◽  
Tetsuhiko Nagao ◽  
Takanari Kitazono ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Brain Stem ◽  
Topical Application ◽  
Basilar Artery ◽  
Group Versus ◽  
Control Group ◽  
Cranial Window ◽  
Severe Hypotension ◽  
The Brain

We tested the hypothesis that nitric oxide (NO) plays a role in CBF autoregulation in the brain stem during hypotension. In anesthetized rats, local CBF to the brain stem was determined with laser-Doppler flowmetry, and diameters of the basilar artery and its branches were measured through an open cranial window during stepwise hemorrhagic hypotension. During topical application of 10−5 mol/L and 10−4 mol/L Nω-nitro-L-arginine (L-NNA), a nonselective inhibitor of nitric oxide synthase (NOS), CBF started to decrease at higher steps of mean arterial blood pressure in proportion to the concentration of L-NNA in stepwise hypotension (45 to 60 mm Hg in the 10−5 mol/L and 60 to 75 mm Hg in the 10−4 mol/L L-NNA group versus 30 to 45 mm Hg in the control group). Dilator response of the basilar artery to severe hypotension was significantly attenuated by topical application of L-NNA (maximum dilatation at 30 mm Hg: 16 ± 8% in the 10−5 mol/L and 12 ± 5% in the 10−4 mol/L L-NNA group versus 34 ± 4% in the control group), but that of the branches was similar between the control and L-NNA groups. Topical application of 10−5 mol/L 7-nitro indazole, a selective inhibitor of neuronal NOS, did not affect changes in CBF or vessel diameter through the entire pressure range. Thus, endothelial but not neuronal NO seems to take part in the regulation of CBF to the the brain stem during hypotension around the lower limits of CBF autoregulation. The role of NO in mediating dilatation in response to hypotension appears to be greater in large arteries than in small ones.

scholarly journals THE EFFECTIVENES OF COMPLEX DRUG “BIFIDUM BAG” FOR STATUS CORRECTION OF LARGE INTESTINE MICROBOICENOSIS AND ANTIOXIDANT PROPERTIES OF COLONOCYTES IN EXPERIMENTAL DYSBIOSIS

2019 ◽  
Vol 23 (2) ◽  
pp. 203-210
Author(s):  
O. A. Medvedeva ◽  
V. A. Korolev ◽  
N. A. Verevkina ◽  
V. A. Riadnova
Keyword(s):  
Superoxide Dismutase ◽  
Large Intestine ◽  
Antioxidant Properties ◽  
Malonic Dialdehyde ◽  
The State ◽  
Control Group ◽  
Experimental Animals ◽  
Bacteriological Method ◽  
Complex Preparation ◽  
Complex Drug

The effectiveness of complex drug “Bifidum BAG” for status correction of large intestine microbiocenosis and antioxidant properties of colonocytes in experimental dysbiosis has been studied. Acomplex drug was administered to experimental animals, which includes Bifidobacterium and Dihydroquercetin. Quantitative and qualitative study of large intestine was done in mices by bacteriological method. The state of lipid peroxidation system was evaluatedaccoding to the content of acylhydroperoxide and malonic dialdehyde. The state of antioxidant protective system was reached by means of catalase and superoxide dismutase activity. Experimental dysbiosis was shown as significant changes in mucosal microflora, changes colonocytes antioxidant properties. The use of the complex preparation “Bifidum BAG”, led to the normalization of the colon microbiota (11 of 16 microorganisms were recovered). After correction gentamicin-associated dysbiosis with a complex probiotic, a positive effect of the drug on the colonocytes antioxidant defense was noted. So the activity of catalase increased 1.1 times, compared with the determined index in the group “dysbiosis”. The activity of superoxide dismutase increased 2 times in comparison with the group “dysbiosis”, exceeding the value of the control group. The concentration of LPO products in colonocytes of experimental animals decreased significantly. The content of malonicdialdehyde and acylhydroperoxide decreased 1.6 times and 5.6 times in comparison with the determined index of the group “dysbiosis”, respectively.

scholarly journals Defensive role of silibinin against arsenic induced oxidative stress mediated dyslipidemia and neurotoxicity in rats

2016 ◽  
Vol 4 (1) ◽  
pp. 78 ◽  
Author(s):  
Muthumani Muthu ◽  
Sumedha Naroem Chanu ◽  
Shagirtha Kalist ◽  
Milton Prabu
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Properties ◽  
Brain Regions ◽  
Lipid Profiles ◽  
Antioxidant Enzyme Activities ◽  
Enzymatic Antioxidants ◽  
Ros Production ◽  
Protein Carbonyl Content ◽  
Defensive Role ◽  
The Brain

Arsenic (As) is an environmental toxic metalloid that is present in everywhere such as air, water and soil. Generally, inorganic arsenic has a tendency to be more toxic than organic arsenic. The present study was designed to determine whether oral administration of silibinin (SB), which has been shown to have substantial antioxidant properties, when pre-administered (75 mg/kg body weight) once daily for 4 weeks along with arsenic (5 mg/kg) would prevent arsenic-induced changes in antioxidant defense system, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX),glutathione-S-transferase (GST),glutathione reductase (GR), glucose-6-phosphate dehydrogenase (G6PD), reduced glutathione (GSH), total sulfhydryl groups (TSH) and vitamin C in rat brain regions such as cortex, striatum, cerebellum, hippocampus and brain stem. Our study also examined the effect of SB over arsenic-induced reactive oxygen species (ROS) production and lipid peroxidation level (LPO) and protein carbonyl content (PC) in distinct brain regions of rats. Moreover, As also alters the lipid profiles such as total lipids, phospholipids, cholesterol, cerebrosides and gangliosides in various regions of the brain. Pre-administration of SB restores the altered enzymatic and non-enzymatic antioxidants, lipid profiles and also markedly reduced the ROS, LPO, PC and accumulation of As in various regions of the brain. These results suggested that arsenic-induced deficits in antioxidant enzyme activities and increase in ROS production and lipid peroxidation levels in brain regions can be remarkably prevented by pre-administration of SB. 

High-Dose Chemotherapy in Small Cell Neuroendocrine Carcinoma: Favorable Long-Term Outcome for Extrapulmonary Primary Localization.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 3075-3075
Author(s):  
Antonia M.S. Mueller ◽  
Alex Kuehnemund ◽  
Monika Engelhardt
Keyword(s):  
High Dose Chemotherapy ◽  
Small Cell ◽  
Primary Site ◽  
Disease Stage ◽  
Control Group ◽  
High Dose ◽  
Group A ◽  
Group B ◽  
Primary Localization

Abstract Small cell neuroendocrine carcinomas (SCNC) are composed of round to spindle-shaped cells with features of both neuroendocrine and epithelial neoplasms. SCNC can be found in basically all epitheloid organs; however, the vast majority arises in the lung, while extrapulmonary (EP) localization is rare. Small cell lung cancer (SCLC) and EP SCNC are considered one histological entity and are treated similarly. Despite the high initial response to chemo- and radiotherapy, most patients relapse after short remission, and overall prognosis is dismal. Clinical trials employing high-dose chemotherapy (HDCT) followed by autologous stem cell transplantation (auto-SCT) neither demonstrated a clear benefit nor clarified its significance in SCLC. The role of intensified treatment in EP SCNC has not been specifically addressed in detail. Conversely to SCLC, some subgroup analyses indicated that patients with EP SCNC might benefit from intensive treatment. We analyzed a total of 22 patients: 8 with EP SCNC (group A; m:f 3:5; median age 36 years (y) [range 22–56]) and 14 patients with SCLC (group B; m:f 10:4; median age 55 y [40–63]), all undergoing HDCT with auto-SCT at our single center from 07/90–01/05. A control group C consisted of 30 patients with EP SCNC (m:f 21:9, median age 66 years [32–81], who received different standard treatments without auto-SCT. All group A patients had stage IV disease (liver n=5, lymph nodes n=4, pancreas n=1, orbita n=1, bone n=1, kidney n=1). Two of these patients received additional local radiotherapy. In group B, 7 patients had limited and 7 patients extensive disease, (stage I (n=1), II (n=2), III (n=10), IV (n=1). HDCT with VIC (etoposide, ifosfamide, carboplatin; n=21), or CCT (carboplatin, cyclophosphamide, thiotepa; n=1) was followed by infusion of a median 3.2x10^6 CD34+ cells. Prophylactic radiotherapy was performed in 12 patients (mediastinum n=11; brain n=10). With a median follow-up (FU) of 48 months (7–152) for group A and 85 months (0–170) for group B, 5/8 (63%) of patients with EP SCNC (group A) are alive and in complete remission (CR), compared to 5/14 (36%) SCLC patients (group B). Best response ever achieved after HDCT was a CR in 5/8 (63%), a partial remission (PR) in 2/8 (25%) and stable disease (SD) in 1/8 (12%) in group A. In group B, a CR was attained in 11/14 (79%), a PR and a SD in 1/14 (7%) patients, respectively. In the conventionally treated control group C, a transient PR was achieved in 5/30 (16%), and after a median FU of 9.7 months, only 2/30 (6.7%) EP SCNC patients are alive. Our analysis suggests that selected SCNC patients may benefit from HDCT, particularly when integrated into multimodal treatment concepts. The remarkably favorable outcome in patients with EP primary site, even when HDCT was implemented as salvage treatment warrants further studies on the role of HDCT in SCNC. Careful attention will have to be paid to prognostic clinical features, such as primary site and/or histological parameters including neuroendocrine marker profiles and mitotic indices. These may help to predict which patients will benefit from intensified treatment. In addition, further histological studies should address the identification of markers specific for lung- vs. extrapulmonary primary localization. For this purpose all available tumor tissue from our study is currently under histological re-analysis, assessing the expression of the novel tumor testis antigens.

scholarly journals Convergence, Accommodation, Fusion, and Stereopsis: What Keeps the Eyes Aligned in Intermittent Exotropia?

Scientifica ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Costantino Schiavi ◽  
Valentina Di Croce ◽  
Laura Primavera ◽  
Filippo Tassi
Keyword(s):  
Patient Group ◽  
Control Group ◽  
Intermittent Exotropia ◽  
Myopic Shift ◽  
Infrared Video ◽  
Group A ◽  
Angle Of Deviation ◽  
Convergence And Divergence ◽  
Group B

Purpose. To investigate the relationships between angle of deviation, fusional convergence and divergence amplitude, AC/A ratio, near point of convergence (NPC), and myopia-phoria in intermittent exotropia (IXT). Methods. 93 patients with IXT, divided into two groups, were recruited in the study. In Group A (73 patients), fusional convergence and divergence amplitudes, NPC, and AC/A ratio were studied and compared with a control group. In Group B (in 20 patients), myopia-phoria while switching from monocular to binocular view was studied with an infrared video retinoscopy and compared with a control group. Results. In Group A, positive fusional amplitudes, NPC, and AC/A ratio of IXT patients did not differ from those of normals. Negative fusional amplitudes were significantly higher in the patient group than in the control group. In Group B, myopic shift was statistically significantly higher in the patient group and there was a statistically significant positive correlation between myopic shift and angle of strabismus. Conclusions. Apart from the role of fusional convergence which accounts for myopia-phoria, that of the other binocular functions in the control at near of IXT and conversely their specific role in the pathogenesis of IXT remain unclear and the cause of divergent infantile strabismus is still unknown.

scholarly journals In VivoAntioxidant Activity of Deacetylasperulosidic Acid in Noni

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
De-Lu Ma ◽  
Mai Chen ◽  
Chen X. Su ◽  
Brett J. West
Keyword(s):  
Antioxidant Activity ◽  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Catalase Activity ◽  
Antioxidant Properties ◽  
Superoxide Dismutase Activity ◽  
Morinda Citrifolia ◽  
Control Group ◽  
Dose Dependent

Deacetylasperulosidic acid (DAA) is a major phytochemical constituent ofMorinda citrifolia(noni) fruit. Noni juice has demonstrated antioxidant activityin vivoand in human trials. To evaluate the role of DAA in this antioxidant activity, Wistar rats were fed 0 (control group), 15, 30, or 60 mg/kg body weight per day for 7 days. Afterwards, serum malondialdehyde concentration and superoxide dismutase and glutathione peroxidase activities were measured and compared among groups. A dose-dependent reduction in malondialdehyde was evident as well as a dose-dependent increase in superoxide dismutase activity. DAA ingestion did not influence serum glutathione peroxidase activity. These results suggest that DAA contributes to the antioxidant activity of noni juice by increasing superoxide dismutase activity. The fact that malondialdehyde concentrations declined with increased DAA dose, despite the lack of glutathione peroxidase-inducing activity, suggests that DAA may also increase catalase activity. It has been previously reported that noni juice increases catalase activityin vivobut additional research is required to confirm the effect of DAA on catalase. Even so, the current findings do explain a possible mechanism of action for the antioxidant properties of noni juice that have been observed in human clinical trials.

scholarly journals To assess the role of lingual flap for the removal of lower wisdom tooth.

2020 ◽  
Vol 27 (08) ◽  
pp. 1656-1663
Author(s):  
Noman Ahmed ◽  
Almas Rahoojo ◽  
Syed Zafar Abbas ◽  
Syed Ghazanfar Hassan ◽  
Zunair Memon
Keyword(s):  
Nerve Injury ◽  
Maxillofacial Surgery ◽  
Sensory Nerve ◽  
Lingual Nerve ◽  
Control Group ◽  
Wisdom Tooth ◽  
Significant Difference ◽  
Group A ◽  
Group B

Objectives: To assess the role of lingual flap in encountering lingual nerve injury during the surgical elimination of lower wisdom tooth. Study Design: Cross Sectional Case Control study. Setting: Department of Oral & Maxillofacial Surgery, Institute of Dentistry, Liaquat University of Medical & Health Sciences Jamshoro / Hyderabad. Period: January 2016 to September 2016. Material & Methods: Subjects were categorized into two categories: Group-A (lingual flap) & group-B (control group) each having 52 patients by Lottery method. In group A an envelope mucoperiosteal flap followed by lingual flap elevation carried out and in group B only envelope flap was carried out. All patients were reviewed on the first postoperative day and again 1 and 3rd week after surgery. At each postoperative visit, patient was examined for sensory nerve impairment of the lingual nerve by same observer. Results: Total 104 cases were studied, all the cases categorized among two groups 52 in each group. In group-A 34 were males and 18 were females, while in group-B 44 were male and 8 were females. There was no significant difference among both groups according to the pre-operative assessment. According to objective findings, lingual nerve paresthesia was found among 2 cases of group A on 1st visit, while no any case was found with nerve injury in group B. Out of 2 cases, one case was improved and only one had presented with complain at 2nd visit and 3rd visit, no significant difference among both groups, p-values were quite insignificant. Conclusion: It was concluded that lingual nerve injury (LNI) occurred among few cases of lingual flap group which was insignificantly higher as compare to control group, but the nature of injury was temporary.

scholarly journals Natural astaxanthin enhanced antioxidant capacity and improved semen quality through the MAPK/Nrf2 pathway in aging layer breeder roosters

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shan Gao ◽  
Nuo Heng ◽  
Fang Liu ◽  
Yong Guo ◽  
Yu Chen ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Hydroxyl Radicals ◽  
Semen Quality ◽  
Antioxidant Properties ◽  
Mitogen Activated Protein Kinase ◽  
Control Group ◽  
Antioxidant Enzyme Activities ◽  
Related Factor ◽  
Mrna Levels ◽  
Nrf2 Pathway

Abstract Background Natural astaxanthin (ASTA) has strong antioxidant properties and has been widely used as a health product to improve human health. However, the effects of ASTA on the reproductive performance of aging roosters have been poorly studied. We aimed to investigate the effects of dietary ASTA on semen quality and antioxidant capacity in aging roosters and to explore the potential mechanism of semen quality change via anti-oxidation defense system. Methods In the present study, 96 53-week-old Jinghong No. 1 layer breeder roosters were fed a corn-soybean meal basal diet containing 0, 25, 50, or 100 mg/kg ASTA for 6 weeks. Results Semen quality in the ASTA groups remarkably improved than that in the control group, and antioxidant activities, the abilities to scavenge hydroxyl radicals and superoxide anions, increased gradually with ASTA addition (P < 0.05). In addition, the mRNA levels of antioxidant enzymes as well as the mRNA and protein levels of the mitogen-activated protein kinase (MAPK) and nuclear factor-erythroid 2-related factor 2 (Nrf2) were markedly increased in the 50–100 mg/kg ASTA group (P < 0.05). Conclusions Collectively, these results demonstrate that dietary ASTA may improve semen quality by increasing antioxidant enzyme activities and the ability to scavenge hydroxyl radicals, which may be related to upregulation of the MAPK/Nrf2 pathway.

scholarly journals Ginger attenuated di (n-butyl) phthalate-induced reproductive toxicity in pubertal male rabbits

2017 ◽  
Vol 25 (4) ◽  
pp. 387 ◽  
Author(s):  
S. S. Oda ◽  
R. S. Waheeb
Keyword(s):  
Superoxide Dismutase ◽  
Reproductive Toxicity ◽  
Protective Role ◽  
Control Group ◽  
Significant Elevation ◽  
Serum Lh ◽  
Sperm Counts ◽  
Butyl Phthalate ◽  
Total Superoxide Dismutase

This study was conducted to investigate the toxic effects of di (n-butyl) phthalate (DBP) on reproductive functions in male rabbits and the probable protective role of ginger. Twenty rabbits were divided equally into 4 groups: control group; DBP group (520 mg/kg body weight [BW] DBP orally), DBP+ginger group (520 mg/kg BW DBP and 400 mg/kg BW ginger) and ginger group (400 mg/kg BW ginger orally). Treatments were given three-times/week. After 7 wk of the experiment, DBP induced significant reduction in testis and prostate weights, serum and intratesticular testosterone concentrations, sperm counts both mass and progressive sperm motility and live sperms percentage as well as significant elevation of testicular malondialdehyde compared to control group. No significant changes were detected in epididymal weights, serum FSH and serum LH concentrations and testicular total superoxide dismutase and glutathione peroxidase activities in all treated groups. DBP induced considerable histopathological alterations in testis and to minimal extent in epididymis and prostates. Ginger treatment attenuated the significant changes to a certain extent induced by DBP intoxication in male rabbits probably due to its potential to scavenge free radicals.

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