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Oxidative Medicine and Cellular Longevity

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https://www.readbyqxmd.com/read/27891208/endogenous-n-3-fatty-acids-alleviate-carbon-tetrachloride-induced-acute-liver-injury-in-fat-1-transgenic-mice
#1
Ruibing Feng, Meng Wang, Chunyan Yan, Peng Li, Meiwan Chen, Chengwei He, Jian-Bo Wan
n-3 polyunsaturated fatty acids (PUFAs) are beneficial for numerous models of liver diseases. The probable protective effects of n-3 PUFA against carbon-tetrachloride- (CCl4-) induced acute liver injury were evaluated in a fat-1 transgenic mouse that synthesizes endogenous n-3 from n-6 PUFA. Fat-1 mice and their WT littermates were fed a modified AIN93 diet containing 10% corn oil and were injected intraperitoneally with a single dose of CCl4 or vehicle. CCl4 challenge caused severe liver injury in WT mice, as indicated by serum parameters and histopathological changes, which were remarkably ameliorated in fat-1 mice...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27891207/the-antiapoptosis-effect-of-glycyrrhizate-on-hepg2-cells-induced-by-hydrogen-peroxide
#2
Miao Su, Tengfei Yu, Hong Zhang, Yan Wu, Xiaoqin Wang, Gang Li
This study demonstrated that glycyrrhizate (GAS) could protect HEPG2 cells against damage and apoptosis induced by H2O2 (1600 μM, 4 h). Cell viability assay revealed that GAS was noncytotoxity at concentration 125 µg/mL, and GAS (5 μg/mL, 25 μg/mL, and 125 μg/mL) protected HepG2 cells against H2O2-induced cytotoxicity. H2O2 induced the HepG2 cells apoptosis, obvious morphologic changes were observed after Hochest 33258 staining, and more apoptotic cells were counted in flow cytometry assay compared to that of the natural group...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27885334/-epicatechin-prevents-blood-pressure-increase-and-reduces-locomotor-hyperactivity-in-young-spontaneously-hypertensive-rats
#3
M Kluknavsky, P Balis, A Puzserova, J Radosinska, A Berenyiova, M Drobna, S Lukac, J Muchova, I Bernatova
This study investigated the effects of subchronic (-)-epicatechin (Epi) treatment on locomotor activity and hypertension development in young spontaneously hypertensive rats (SHR). Epi was administered in drinking water (100 mg/kg/day) for 2 weeks. Epi significantly prevented the development of hypertension (138 ± 2 versus 169 ± 5 mmHg, p < 0.001) and reduced total distance traveled in the open-field test (22 ± 2 versus 35 ± 4 m, p < 0.01). In blood, Epi significantly enhanced erythrocyte deformability, increased total antioxidant capacity, and decreased nitrotyrosine concentration...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27885333/astragalus-polysaccharide-suppresses-6-hydroxydopamine-induced-neurotoxicity-in-caenorhabditis-elegans
#4
Haifeng Li, Ruona Shi, Fei Ding, Hongyu Wang, Wenjing Han, Fangli Ma, Minghua Hu, Chung Wah Ma, Zebo Huang
Astragalus membranaceus is a medicinal plant traditionally used in China for a variety of conditions, including inflammatory and neural diseases. Astragalus polysaccharides are shown to reduce the adverse effect of levodopa which is used to treat Parkinson's disease (PD). However, the neuroprotective effect of Astragalus polysaccharides per se in PD is lacking. Using Caenorhabditis elegans models, we investigated the protective effect of astragalan, an acidic polysaccharide isolated from A. membranaceus, against the neurotoxicity of 6-hydroxydopamine (6-OHDA), a neurotoxin that can induce parkinsonism...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27885332/2-3-5-4-tetrahydroxystilbene-2-o-%C3%AE-d-glucoside-promotes-expression-of-the-longevity-gene-klotho
#5
Shuang Ling, Ju Duan, Rongzhen Ni, Jin-Wen Xu
The longevity gene klotho has numerous physiological functions, such as regulating calcium and phosphorus levels, delaying senescence, improving cognition, reducing oxidative stress, and protecting vascular endothelial cells. This study tested whether 2,3,5,4'-Tetrahydroxystilbene-2-O-β-D-glucoside (THSG), a small molecule with antiaging effects, regulates the expression and physiological effects of klotho. Our results showed that THSG dose-dependently increased the luciferase reporter activity of the klotho gene, reversed the decrease in mRNA and protein expression of klotho which was induced by angiotensin II in NRK-52E renal tubular epithelial cells, and increased klotho mRNA expression in the cerebral cortex, hippocampus, testis, and kidney medulla of spontaneously hypertensive rats...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27882191/protective-effects-of-hydrogen-sulfide-in-the-ageing-kidney
#6
Cui-Lan Hou, Ming-Jie Wang, Chen Sun, Yong Huang, Sheng Jin, Xue-Pan Mu, Ying Chen, Yi-Chun Zhu
Aims. The study aimed to examine whether hydrogen sulfide (H2S) generation changed in the kidney of the ageing mouse and its relationship with impaired kidney function. Results. H2S levels in the plasma, urine, and kidney decreased significantly in ageing mice. The expression of two known H2S-producing enzymes in kidney, cystathionine γ-lyase (CSE) and cystathionine-β-synthase (CBS), decreased significantly during ageing. Chronic H2S donor (NaHS, 50 μmol/kg/day, 10 weeks) treatment could alleviate oxidative stress levels and renal tubular interstitial collagen deposition...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27872680/downregulation-of-glutathione-biosynthesis-contributes-to-oxidative-stress-and-liver-dysfunction-in-acute-kidney-injury
#7
Yue Shang, Yaw L Siow, Cara K Isaak, Karmin O
Ischemia-reperfusion is a common cause for acute kidney injury and can lead to distant organ dysfunction. Glutathione is a major endogenous antioxidant and its depletion directly correlates to ischemia-reperfusion injury. The liver has high capacity for producing glutathione and is a key organ in modulating local and systemic redox balance. In the present study, we investigated the mechanism by which kidney ischemia-reperfusion led to glutathione depletion and oxidative stress. The left kidney of Sprague-Dawley rats was subjected to 45 min ischemia followed by 6 h reperfusion...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27872679/the-oxidative-and-inflammatory-state-in-patients-with-acute-renal-graft-dysfunction-treated-with-tacrolimus
#8
Sandra Carrillo-Ibarra, José Ignacio Cerrillos-Gutiérrez, Ariadna Escalante-Núñez, Enrique Rojas-Campos, Benjamín Gómez-Navarro, Sonia Sifuentes-Franco, Ernesto Germán Cardona-Muñoz, Alejandra Guillermina Miranda-Díaz
Objective. To determine the oxidative stress/inflammation behavior in patients with/without acute graft dysfunction (AGD) with Tacrolimus. Methods. Cross-sectional study, in renal transplant (RT) recipients (1-yr follow-up). Patients with AGD and without AGD were included. Serum IL-6, TNF-α, 8-isoprostanes (8-IP), and Nitric Oxide (NO) were determined by ELISA; C-reactive protein (CRP) was determined by nephelometry; lipid peroxidation products (LPO) and superoxide dismutase (SOD) were determined by colorimetry...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27867452/renalase-as-a-novel-biomarker-for-evaluating-the-severity-of-hepatic-ischemia-reperfusion-injury
#9
Huili Li, Jianrong Guo, Hongli Liu, Yanfeng Niu, Lixia Wang, Kun Huang, Jiliang Wang
Hepatic ischemia-reperfusion (I/R) injury is a serious complication in clinical practice. However, no efficient biomarkers are available for the evaluation of the severity of I/R injury. Recently, renalase has been reported to be implicated in the I/R injury of various organs. This protein is secreted into the blood in response to increased oxidative stress. To investigate the responsiveness of renalase to oxidative stress, we examined the changes of renalase in cell and mouse models. We observed a significant increase of renalase expression in HepG2 cells in a time- and dose-dependent manner when treated with H2O2...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27867451/thioredoxin-interacting-protein-mediates-nlrp3-inflammasome-activation-involved-in-the-susceptibility-to-ischemic-acute-kidney-injury-in-diabetes
#10
Ye Da Xiao, Ya Yi Huang, Hua Xin Wang, Yang Wu, Yan Leng, Min Liu, Qian Sun, Zhong-Yuan Xia
Kidney in diabetic state is more sensitive to ischemic acute kidney injury (AKI). However, the underlying mechanisms remain unclear. Herein, we examined the impact of diabetes mellitus on thioredoxin-interacting protein (TXNIP) expression and whether mediated NLRP3 activation was associated with renal ischemia/reperfusion- (I/R-) induced AKI. In an in vivo model, streptozotocin-induced diabetic rats showed higher susceptibility to I/R injury with increased TXNIP expression, which was significantly attenuated by resveratrol (RES) treatment (10 mg/kg intraperitoneal daily injection for 7 consecutive days prior to I/R induction)...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27847555/sulforaphane-protects-pancreatic-acinar-cell-injury-by-modulating-nrf2-mediated-oxidative-stress-and-nlrp3-inflammatory-pathway
#11
Zhaojun Dong, Haixiao Shang, Yong Q Chen, Li-Long Pan, Madhav Bhatia, Jia Sun
Acute pancreatitis (AP) is characterized by early activation of intra-acinar proteases followed by acinar cell death and inflammation. Cellular oxidative stress is a key mechanism underlying these pathological events. Sulforaphane (SFN) is a natural organosulfur antioxidant with undescribed effects on AP. Here we investigated modulatory effects of SFN on cellular oxidation and inflammation in AP. AP was induced by cerulean hyperstimulation in BALB/c mice. Treatment group received a single dose of 5 mg/kg SFN for 3 consecutive days before AP...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27847554/nrf2-and-notch-signaling-in-lung-cancer-near-the-crossroad
#12
REVIEW
Angelo Sparaneo, Federico Pio Fabrizio, Lucia Anna Muscarella
The transcription factor Nrf2 (NF-E2 related factor 2) is a master regulator of the cell antioxidant response associated with tumor growth and resistance to cytotoxic treatments. In particular, Nrf2 induces upregulation of cytoprotective genes by interacting with the closely situated AREs (Antioxidant Response Elements) in response to endogenous or exogenous stress stimuli and takes part to several oncogenic signaling pathways. Among these, the crosstalk with Notch pathway has been shown to enhance cytoprotection and maintenance of cellular homeostasis, tissue organization by modulating cell proliferation kinetics, and stem cell self-renewal in several organs...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27847553/differential-expression-of-nadph-oxidases-depends-on-skeletal-muscle-fiber-type-in-rats
#13
Adriano César Carneiro Loureiro, Igor Coutinho do Rêgo-Monteiro, Ruy A Louzada, Victor Hugo Ortenzi, Angélica Ponte de Aguiar, Ewerton Sousa de Abreu, João Paulo Albuquerque Cavalcanti-de-Albuquerque, Fabio Hecht, Ariclécio Cunha de Oliveira, Vânia Marilande Ceccatto, Rodrigo S Fortunato, Denise P Carvalho
NADPH oxidases (NOX) are important sources of reactive oxygen species (ROS) in skeletal muscle, being involved in excitation-contraction coupling. Thus, we aimed to investigate if NOX activity and expression in skeletal muscle are fiber type specific and the possible contribution of this difference to cellular oxidative stress. Oxygen consumption rate, NOX activity and mRNA levels, and the activity of catalase (CAT), glutathione peroxidase (GPX), and superoxide dismutase (SOD), as well as the reactive protein thiol levels, were measured in the soleus (SOL), red gastrocnemius (RG), and white gastrocnemius (WG) muscles of rats...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27847552/schisandrin-b-a-double-edged-sword-in-nonalcoholic-fatty-liver-disease
#14
REVIEW
Pou Kuan Leong, Kam Ming Ko
Nonalcoholic fatty liver disease (NAFLD) is a spectrum of liver lesions ranging from hepatic steatosis, nonalcoholic steatohepatitis, hepatic cirrhosis, and hepatocellular carcinoma. The high global prevalence of NAFLD has underlined the important public health implications of this disease. The pathogenesis of NAFLD involves the abnormal accumulation of free fatty acids, oxidative stress, endoplasmic reticulum (ER) stress, and a proinflammatory state in the liver. Schisandrin B (Sch B), an active dibenzooctadiene lignan isolated from the fruit of Schisandra chinensis (a traditional Chinese herb), was found to possess antihyperlipidemic, antioxidant, anti-ER stress, and anti-inflammatory activities in cultured hepatocytes in vitro and in rodent livers in vivo...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27847551/caspase-3-deletion-promotes-necrosis-in-atherosclerotic-plaques-of-apoe-knockout-mice
#15
Mandy O J Grootaert, Dorien M Schrijvers, Marthe Hermans, Viviane O Van Hoof, Guido R Y De Meyer, Wim Martinet
Apoptosis of macrophages and vascular smooth muscle cells (VSMCs) in advanced atherosclerotic plaques contributes to plaque progression and instability. Caspase-3, a key executioner protease in the apoptotic pathway, has been identified in human and mouse atherosclerotic plaques but its role in atherogenesis is not fully explored. We therefore investigated the impact of caspase-3 deletion on atherosclerosis by crossbreeding caspase-3 knockout (Casp3(-/-)) mice with apolipoprotein E knockout (ApoE(-/-)) mice...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27843534/phytochemical-content-and-pharma-nutrition-study-on-eleutherococcus-senticosus-fruits-intractum
#16
Daniel Załuski, Marta Olech, Agnieszka Galanty, Robert Verpoorte, Rafał Kuźniewski, Renata Nowak, Anna Bogucka-Kocka
In the past two decades public interest in herbal products has increased significantly in Europe, especially in the plant-based products from non-European traditions. Eleutherococcus senticosus has been used for the treatment of inflammatory diseases, anemia, and rheumatoid arthritis. The Eleutherococcus senticosus fruits intractum was examined for the content of phenolic acids (LC-ESI-MS/MS), minerals (AAS), TPC, and TFC (spectrophotometric assay). The antioxidant activity was determined using free radical scavenging assay and TLC-DB-DPPH(∗) dot-blot test...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27843533/an-acetamide-derivative-as-a-camptothecin-sensitizer-for-human-non-small-cell-lung-cancer-cells-through-increased-oxidative-stress-and-jnk-activation
#17
Han-Lin Chou, Yao Fong, Hsin-Hsien Lin, Eing Mei Tsai, Jeff Yi-Fu Chen, Wen-Tsan Chang, Chang-Yi Wu, Hui-Min David Wang, Hurng-Wern Huang, Chien-Chih Chiu
In recent years, combination chemotherapy is a primary strategy for treating lung cancer; however, the issues of antagonism and side effects still limit its applications. The development of chemosensitizer aims to sensitize chemoresistant cancer cells to anticancer drugs and therefore improve the efficacy of chemotherapy. In this study, we examined whether N-[2-(morpholin-4-yl)phenyl]-2-{8-oxatricyclo[7.4.0.0,2,7]trideca-1(9),2(7),3,5,10,12-hexaen-4-yloxy}acetamide (NPOA), an acetamide derivative, sensitizes human non-small-cell lung cancer (NSCLC) H1299 cells towards camptothecin- (CPT-) induced apoptosis effects...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27843532/nlrp3-inflammasome-activation-in-the-brain-after-global-cerebral-ischemia-and-regulation-by-17%C3%AE-estradiol
#18
Roshni Thakkar, Ruimin Wang, Gangadhara Sareddy, Jing Wang, Dharma Thiruvaiyaru, Ratna Vadlamudi, Quanguang Zhang, Darrell Brann
17β-Estradiol (E2) is a well-known neuroprotective factor in the brain. Recently, our lab demonstrated that the neuroprotective and cognitive effects of E2 require mediation by the estrogen receptor (ER) coregulator protein and proline-, glutamic acid-, and leucine-rich protein 1 (PELP1). In the current study, we examined whether E2, acting via PELP1, can exert anti-inflammatory effects in the ovariectomized rat and mouse hippocampus to regulate NLRP3 inflammasome activation after global cerebral ischemia (GCI)...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27840669/an-explanation-of-the-underlying-mechanisms-for-the-in-vitro-and-in-vivo-antiurolithic-activity-of-glechoma-longituba
#19
Qiang Liang, Xiaoran Li, Wangning Zhou, Yu Su, Shenbao He, Shuanglei Cheng, Jianzhong Lu, Wenjuan Cao, Yuke Yan, Xiaxia Pei, Jin Qi, Guangli Xu, Zhongjin Yue
Purpose. To use in vitro and in vivo models to evaluate Glechoma longituba extract to provide scientific evidence for this extract's antiurolithic activity. Materials and Methods. Potassium citrate was used as a positive control group. Oxidative stress (OS) markers and the expression of osteopontin (OPN) and kidney injury molecule-1 (KIM-1) were measured to assess the protective effects of Glechoma longituba. Multiple urolithiasis-related biochemical parameters were evaluated in urine and serum. Kidneys were harvested for histological examination and the assessment of crystal deposits...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27840668/pomegranate-derived-polyphenols-reduce-reactive-oxygen-species-production-via-sirt3-mediated-sod2-activation
#20
Chong Zhao, Takenori Sakaguchi, Kosuke Fujita, Hideyuki Ito, Norihisa Nishida, Akifumi Nagatomo, Yukimasa Tanaka-Azuma, Yoshinori Katakura
Pomegranate-derived polyphenols are expected to prevent life-style related diseases. In this study, we evaluated the ability of 8 pomegranate-derived polyphenols, along with other polyphenols, to augment SIRT3, a mammalian SIR2 homolog localized in mitochondria. We established a system for screening foods/food ingredients that augment the SIRT3 promoter in Caco-2 cells and identified 3 SIRT3-augmenting pomegranate-derived polyphenols (eucalbanin B, pomegraniin A, and eucarpanin T1). Among them, pomegraniin A activated superoxide dismutase 2 (SOD2) through SIRT3-mediated deacetylation, thereby reducing intracellular reactive oxygen species...
2016: Oxidative Medicine and Cellular Longevity
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