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Uric acid antioxidant

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https://www.readbyqxmd.com/read/28535741/effects-of-n-acetyl-cysteine-on-oxidative-stress-and-tnf-%C3%AE-gene-expression-in-diclofenac-induced-hepatotoxicity-in-rats
#1
Ali Nouri, Esfandiar Heidarian, Morteza Nikoukar
The consumption of nonsteroidal anti-inflammatory drug, such as diclofenac, can lead to hepatotoxicity. In the present study, protective effect of N-acetyl cysteine (NAC) on diclofenac-induced hepatotoxicity was investigated. Thirty two male rats were divided into four groups. Group 1 (control group) was treated with normal saline (1 ml/kg, i.p.) for 4 days. Group 2 (test without treatment) received diclofenac only (50 mg/kg, i.p.) for 4 days. Groups 3 and 4 received diclofenac (50 mg/kg, i.p.) plus NAC (150mg/kg, p...
May 24, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28529242/hyperuricemia-as-a-protective-factor-for-mild-cognitive-impairment-in-non-obese-elderly
#2
Feng Wang, Minghui Zhao, Zhaoli Han, Dai Li, Shishuang Zhang, Yongqiang Zhang, Xiaodong Kong, Ning Sun, Qiang Zhang, Ping Lei
Mild cognitive impairment (MCI) is regarded as incipient dementia. Patients with MCI have increased risk of later progressing to dementia. Blood uric acid (UA) is an important non-enzymatic antioxidant in peripheral circulation, and plays an unconfirmed protective role in MCI. Furthermore, obesity-induced inflammation, which affects UA metabolism and MCI onset, might regulate such protective role. Thus, the aim of the study was to determine the relationship of UA to MCI and the potential effect from inflammation...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28529085/variations-in-native-protein-glycation-and-plasma-antioxidants-in-several-birds-of-prey
#3
Tana Ingram, Jessica Zuck, Chad R Borges, Patrick Redig, Karen L Sweazea
Birds are an anomaly among vertebrates as they are remarkably long-lived despite having naturally high blood glucose and metabolic rates. For mammals, hyperglycemia leads to oxidative stress and protein glycation. In contrast, many studies have shown that domestic and wild birds are relatively resistant to these glucose-mediated pathologies. Surprisingly very little research has examined protein glycation in birds of prey, which by nature consume a diet high in protein and fat that promotes gluconeogenesis...
May 18, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28525944/oxidative-stress-and-some-biochemical-alterations-due-to-scorpion-leiurus-quinquestriatus-crude-venom-in-rats
#4
Muhammad M A Salman, Seddik Hammad
Scorpion envenomation is a common medical problem in many countries; it is an important cause of morbidity and mortality. The venom of Leiurus quinquestriatus (LQ) is responsible for a number of deaths in children and adults. It has been stated that specific pathophysiological conditions such as generation of oxygen free radicals may trigger the onset of multiple organ dysfunction; therefore, the present study aimed to assess the oxidative stress mediated by LQ crude venom and its effect on the biochemical parameters in rats...
May 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28521871/relation-of-antioxidant-capacity-of-diet-and-markers-of-oxidative-status-with-c-reactive-protein-and-adipocytokines-a-prospective-study
#5
Najada Stringa, Adela Brahimaj, Asija Zaciragic, Abbas Dehghan, Mohammad Arfan Ikram, Albert Hofman, Taulant Muka, Jessica C Kiefte-de Jong, Oscar H Franco
BACKGROUND: The role of dietary antioxidants and plasma oxidant-antioxidant status in low-grade chronic inflammation and adipocytokine levels is not established yet. OBJECTIVES: We aimed to evaluate whether total dietary antioxidant capacity (assessed by dietary ferric reducing antioxidant potential (FRAP)), serum uric acid (UA) and gamma glutamyltransferase (GGT) were associated with low-grade chronic inflammation and circulating adipocytokines. METHODS: Data of 4506 participants aged ≥55years from the Rotterdam Study were analyzed...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28521012/the-effect-of-dl-l-isomers-and-dl-hydroxy-analog-administered-at-2-levels-as-dietary-sources-of-methionine-on-the-metabolic-and-antioxidant-parameters-and-growth-performance-of-turkeys
#6
J Jankowski, K Ognik, M Kubinska, A Czech, J Juskiewicz, Z Zdunczyk
A hypothesis was verified that dietary methionine (Met) improves the growth and antioxidant status of turkeys, and that its effects depend on dietary inclusion levels and sources. A total of 816 female Hybrid Converter turkeys was fed wheat-soybean meal-based diets supplemented with 3 sources of Met: DL-, L-isomers and DL-hydroxy analog (DLM, LM, and MHA, respectively). In 4 4-week periods (from one to 16 wk of age), dietary Met content corresponded to NRC (1994) recommendations or was increased by approximately 50% (in one to 8 wk by 44 to 46% and in 9 to 16 wk by 55 to 56% vs...
May 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28514939/antioxidant-properties-of-drugs-used-in-type-2-diabetes-management-could-they-contribute-to-confound-or-conceal-effects-of-antioxidant-therapy
#7
Siu Wai Choi, Cyrus K Ho
OBJECTIVES: This is a narrative review, investigating the antioxidant properties of drugs used in the management of diabetes, and discusses whether these antioxidant effects contribute to, confound, or conceal the effects of antioxidant therapy. METHODS: A systematic search for articles reporting trials, or observational studies on the antioxidant effect of drugs used in the treatment of diabetes in humans or animals was performed using Web of Science, PubMed, and Ovid...
May 17, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28511497/assessment-of-oxidant-antioxidant-status-and-stress-factor-in-recurrent-aphthous-stomatitis-patients-case-control-study
#8
Sherin Ziaudeen, Rathy Ravindran
INTRODUCTION: Despite its vast occurrence, the aetiology of Recurrent Aphthous Stomatitis (RAS) still remains unknown and its aetiology is multifactorial. The factors believed to be associated with the aetiology of RAS, may disturb the equilibrium of oxidant-antioxidant status of the organism and may accelerate the formation of free radicals, resulting in Oxidative Stress (OS). Psychological stress is believed to act as a triggering factor or modifying factor for RAS. AIM: To find whether oxidant-antioxidant status and psychosocial stress play a role in the pathogenesis of RAS...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509906/therapeutic-efficacy-of-atypical-antipsychotic-drugs-by-targeting-multiple-stress-related-metabolic-pathways
#9
H L Cai, P Jiang, Q Y Tan, R L Dang, M M Tang, Y Xue, Y Deng, B K Zhang, P F Fang, P Xu, D X Xiang, H D Li, J K Yao
Schizophrenia (SZ) is considered to be a multifactorial brain disorder with defects involving many biochemical pathways. Patients with SZ show variable responses to current pharmacological treatments of SZ because of the heterogeneity of this disorder. Stress has a significant role in the pathophysiological pathways and therapeutic responses of SZ. Atypical antipsychotic drugs (AAPDs) can modulate the stress response of the hypothalamic-pituitary-adrenal (HPA) axis and exert therapeutic effects on stress by targeting the prefrontal cortex (PFC) and hippocampus...
May 16, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28494418/zingiber-officinale-and-6-gingerol-alleviate-liver-and-kidney-dysfunctions-and-oxidative-stress-induced-by-mercuric-chloride-in-male-rats-a-protective-approach
#10
Deepmala Joshi, Sunil Kumar Srivastav, Sateesh Belemkar, Vaibhav A Dixit
Mercury toxicity is an emerging problem in the world as its concentration is rising continuously due to increased industrial, medicinal and domestic uses. Exposure to mercury represents a serious challenge to humans and other living biomes. The aim of the present study was to assess the protective effect of natural products as Zingiber officinale extract and its active compound (6-gingerol) against mercuric chloride-induced hepatorenal toxicity and oxidative stress in male rats. Male Sprague-Dawley rats (150±10g, n=6 per group) were administered HgCl2 (12μmol/kg, ip; once only) the treatment of Zingiber officinale Rosc...
May 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28481377/effects-of-6-week-nordic-walking-training-on-body-composition-and-antioxidant-status-for-women-55-years-of-age
#11
Agata Cebula, Anna Katarzyna Tyka, Wanda Pilch, Zbigniew Szyguła, Tomasz Pałka, Katarzyna Sztafa-Cabała, Barbara Frączek, Aleksander Tyka
OBJECTIVES: This study examined the effects of 6-week Nordic walking (NW) workout with individually customized intensity, on the body composition, and oxidative stress biomarkers for women > 55 years of age. MATERIAL AND METHODS: Sixteen sedentary women (age 58.1±2.02 years old, body mass index (BMI) 26.74±2.72 kg/m2) worked out the NW 3 times/week over the 6-week period. Training intensity, which reflected the dominance of oxygen metabolism, was determined based on changes in physiological indicators during graded exercise on a treadmill (walking with poles)...
May 8, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28476205/therapeutic-efficacy-of-human-umbilical-cord-mesenchymal-stem-cells-transplantation-against-renal-ischemia-reperfusion-injury-in-rats
#12
Sohair R Fahmy, Amel M Soliman, Mervat El Ansary, Samah Abd Elhamid, Heba Mohsen
BACKGROUND: Acute kidney injury (AKI) is a common clinical problem raising the urgent needs to develop new strategies for treatment. The present study investigated the therapeutic potential of human umbilical cord - mesenchymal stem cells (HUC-MSCs) transplantation against renal ischemia/reperfusion injury (IRI) in rats. METHODS: Twenty four male Wistar rats were assigned into two main groups, sham group (control group) and I/R group. I/R group was injected in the tail vein with either phosphate buffer saline (PBS) or HUC-MSCs...
April 25, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28475169/alterations-in-serum-levels-of-selected-markers-of-oxidative-imbalance-in-adult-celiac-patients-with-extraintestinal-manifestations-pilot-study
#13
Agnieszka Piątek-Guziewicz, Paweł Zagrodzki, Paweł Paśko, Mirosław Krośniak, Agata Ptak-Belowska, Magdalena Przybylska-Feluś, Tomasz Mach, Małgorzata Zwolińska-Wcisło
INTRODUCTION    Oxidative stress is considered as one of the mechanisms responsible for gluten toxicity, but its role in celiac disease (CD) remains unclear.  OBJECTIVES    To evaluate oxidative imbalance in the pathomechanism of CD by determining the concentrations of nitric oxide (NO) and selected antioxidant parameters.  PATIENTS AND METHODS    The study involved 197 adult patients: 53 patients with untreated active CD, 92 celiac patients on gluten-free diet (GFD), and 52 controls. Serum concentrations of antioxidants (uric acid, bilirubin, ferritin, albumin) and serum levels of celiac antibodies, NO, glutathione peroxidase (GPx3) and vitamin E were measured...
May 5, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28472095/oxidative-profiling-of-the-failing-right-heart-in-rats-with-pulmonary-hypertension
#14
Xinhong Wang, Nataliia V Shults, Yuichiro J Suzuki
Right heart failure is the major cause of death among patients with pulmonary arterial hypertension (PAH). Understanding the biology of the right ventricle (RV) should help developing new therapeutic strategies. Rats subjected to the injection of Sugen5416 (an inhibitors of vascular endothelial growth factor receptor) plus the ovalbumin immunization had increased pulmonary arterial pressure and severe vascular remodeling. RVs of these rats were hypertrophied and had severe cardiac fibrosis. No apoptosis was, however, detected...
2017: PloS One
https://www.readbyqxmd.com/read/28468913/does-oxidative-stress-shorten-telomeres
#15
Jelle J Boonekamp, Christina Bauch, Ellis Mulder, Simon Verhulst
Oxidative stress shortens telomeres in cell culture, but whether oxidative stress explains variation in telomere shortening in vivo at physiological oxidative stress levels is not well known. We therefore tested for correlations between six oxidative stress markers and telomere attrition in nestling birds (jackdaws Corvus monedula) that show a high rate of telomere attrition in early life. Telomere attrition was measured between ages 5 and 30 days, and was highly variable (average telomere loss: 323 bp, CV = 45%)...
May 2017: Biology Letters
https://www.readbyqxmd.com/read/28462698/evaluation-of-salivary-uric-acid-and-ph-in-human-immunodeficiency-virus-infected-patients-a-historical-cohort-study
#16
Fatemeh Ahmadi-Motamayel, Samaneh Vaziri Amjad, Mohammad Taghi Goodarzi, Jalal Poorolajal
OBJECTIVE: Antioxidants protect body against cellular damage .Saliva has immunological, enzymatic and antioxidant defense systems. Uric acid is the main and predominant salivary antioxidants molecules. The aim of this study was evaluation of salivary uric acid and pH in HIV infected patients in west of Iran. METHODS: HIV infected patients were selected from behavioral advisory centers of Hamadan and Kermanshah provinces, west of Iran. Saliva was collected between 8 to10 at morning...
April 28, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28462129/hepato-renal-protective-effects-of-hydroethanolic-extract-of-senna-alata-on-enzymatic-and-nonenzymatic-antioxidant-systems-in-streptozotocin-induced-diabetic-rats
#17
Mohanasundaram Sugumar, D Victor Arokia Doss, P N Prasad Maddisetty
BACKGROUND: Oxidative stress induced tissue damage might be the major cause for diabetes mellitus and its associated complications. The management of such oxidative stress is the biggest challenge over the decade. The main objective was to analyze the protective effect of ethanolic extract of Senna alata L leaves on enzymatic and nonenzymatic antioxidant systems of hepatic and renal tissues in Streptozotocin-induced diabetes in rats. METHODS: The use of streptozotocin diabetes was induced in the experimental rats and the subsequent therapeutic effects of standard drug glibenclamide and Senna alata L were compared...
December 2016: Integr Med Res
https://www.readbyqxmd.com/read/28455534/xanthine-oxidase-inhibition-by-febuxostat-attenuates-stress-induced-hyperuricemia-glucose-dysmetabolism-and-prothrombotic-state-in-mice
#18
Maimaiti Yisireyili, Motoharu Hayashi, Hongxian Wu, Yasuhiro Uchida, Koji Yamamoto, Ryosuke Kikuchi, Mohammad Shoaib Hamrah, Takayuki Nakayama, Xian Wu Cheng, Tadashi Matsushita, Shigeo Nakamura, Toshimitsu Niwa, Toyoaki Murohara, Kyosuke Takeshita
Chronic stress is closely linked to the metabolic syndrome, diabetes, hyperuricemia and thromboembolism, but the mechanisms remain elusive. We reported recently that stress targets visceral adipose tissue (VAT), inducing lipolysis, low-grade inflammation with production of inflammatory adipokines, metabolic derangements such as insulin resistance, and prothrombotic state. In the present study, we hypothesized the involvement of VAT xanthine oxidoreductase (XOR), a source of reactive oxygen species (ROS) and uric acid (UA) in the above processes...
April 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28439569/the-obesity-paradox-in-kidney-disease-how-to-reconcile-it-with-obesity-management
#19
Kamyar Kalantar-Zadeh, Connie M Rhee, Jason Chou, S Foad Ahmadi, Jongha Park, Joline Lt Chen, Alpesh N Amin
Obesity, a risk factor for de novo chronic kidney disease (CKD), confers survival advantages in advanced CKD. This so-called obesity paradox is the archetype of the reverse epidemiology of cardiovascular risks, in addition to the lipid, blood pressure, adiponectin, homocysteine, and uric acid paradoxes. These paradoxical phenomena are in sharp contradistinction to the known epidemiology of cardiovascular risks in the general population. In addition to advanced CKD, the obesity paradox has also been observed in heart failure, chronic obstructive lung disease, liver cirrhosis, and metastatic cancer, as well as in the elderly...
March 2017: KI Reports
https://www.readbyqxmd.com/read/28432997/serum-uric-acid-level-is-linked-to-the-disease-progression-rate-in-male-patients-with-multiple-system-atrophy
#20
Jiro Fukae, Shinsuke Fujioka, Shosaburo Yanamoto, Akio Mori, Takahiro Nomi, Taku Hatano, Kousuke Fukuhara, Shinji Ouma, Nobutaka Hattori, Yoshio Tsuboi
OBJECTIVES: Multiple system atrophy (MSA) is a progressive neurodegenerative disorder that may be caused in part by oxidative stress. Uric acid (UA) protects neurons in neurodegenerative disorders via antioxidative effects. The aim of this study was to investigate the relationship between the serum UA concentration and disease progression in MSA patients. PATIENTS AND METHODS: A total of 53 Japanese MSA patients were enrolled in this study. The disease progression rate was estimated by the rate of global disability scale change per year...
April 3, 2017: Clinical Neurology and Neurosurgery
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