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https://www.readbyqxmd.com/read/28323129/peroxiredoxin-2-regulates-pgf2%C3%AE-induced-corpus-luteum-regression-in-mice-by-inhibiting-ros-dependent-jnk-activation
#1
Sun-Ji Park, Jung-Hak Kim, Tae-Shin Kim, Sang-Rae Lee, Jeen-Woo Park, Seunghoon Lee, Jin-Man Kim, Dong-Seok Lee
Luteal regression is a natural and necessary event to regulate the reproductive process in all mammals. Prostaglandin F2α (PGF2α) is the main factor that causes functional and structural regression of the corpus luteum (CL). It is well known that PGF2α-mediated ROS generation is closely involved in luteal regression. Peroxiredoxin 2 (Prx2) as an antioxidant enzyme plays a protective role against oxidative stress-induced cell death. However, the effect of Prx2 on PGF2α-induced luteal regression has not been reported...
March 18, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28314104/ginsenoside-re-ameliorates-brain-insulin-resistance-and-cognitive-dysfunction-in-high-fat-diet-induced-c57bl-6-mice
#2
Jong Min Kim, Chang Hyeon Park, Seon Kyeong Park, Tae Wan Seung, Jin Yong Kang, Jeong Su Ha, Du Sang Lee, Uk Lee, Dae-Ok Kim, Ho Jin Heo
The ameliorating effects of ginsenoside Re (G Re) on high fat diet (HFD)-induced insulin resistance in C57BL/6 mice were investigated to assess its physiological function. In the results of behavioral tests, G Re improved cognitive dysfunction in diabetic mice using Y-maze, passive avoidance, and Morris water maze tests. G Re also significantly recovered hyperglycemia and fasting blood glucose level. In the results of serum analysis, G Re decreased triglyceride (TG), total cholesterol (TCHO), low-density lipoprotein cholesterol (LDLC), glutamic-oxaloacetic transaminase (GOT), and glutamic-pyruvic transaminase (GPT) and increased the ratio of high-density lipoprotein cholesterol (HDLC)...
March 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28271615/neurotropin%C3%A2-alleviates-hippocampal-neuron-damage-through-a-hif-1%C3%AE-mapk-pathway
#3
Wen-Li Fang, De-Qiang Zhao, Fei Wang, Mei Li, Sheng-Nuo Fan, Wang Liao, Yu-Qiu Zheng, Shao-Wei Liao, Song-Hua Xiao, Ping Luan, Jun Liu
AIMS: The main purpose was to verify the potent capacity of Neurotropin® against neuronal damage in hippocampus and to explore its underlying mechanisms. METHODS: HT22 cells were treated with 40 μmol/L Aβ25-35 in the presence of various concentrations of Neurotropin® or in its absence. The cell viability was assessed with a CCK-8 assay, and flow cytometry was used to measure cell apoptosis, intracellular ROS levels, and mitochondrial membrane potential. Aβ plaques were examined by Bielschowsky silver staining, and the activities of antioxidants were detected in hippocampus of APP/PS1 mice after Neurotropin® treatment...
March 7, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28249251/tamarix-gallica-phenolics-protect-iec-6-cells-against-h2o2-induced-stress-by-restricting-oxidative-injuries-and-mapks-signaling-pathways
#4
Jamila Bettaib, Hélène Talarmin, Mickaël Droguet, Christian Magné, Mondher Boulaaba, Marie-Agnès Giroux-Metges, Riadh Ksouri
Polyphenolic compounds gained interest in the pharmaceutical research area due to their beneficial properties. Herein, antioxidant and cytoprotective capacities of T. gallica extract on H2O2-challenged rat small intestine epithelial cells were investigated. To set stress conditions, IEC-6 cultures were challenged with numerous H2O2 doses and durations. Then, 40μM H2O2 during 4h were selected to assess the cytoprotective effect of different T. gallica extract concentrations. Oxidative parameters, measured through CAT and SOD activities as well as MDA quantification were assessed...
February 26, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28246539/schisandra-lignan-extract-protects-against-carbon-tetrachloride-induced-liver-injury-in-mice-by-inhibiting-oxidative-stress-and-regulating-the-nf-%C3%AE%C2%BAb-and-jnk-signaling-pathways
#5
Qingshan Chen, Qi Zhan, Ying Li, Sen Sun, Liang Zhao, Hai Zhang, Guoqing Zhang
Schisandra chinensis (S. chinensis) is a traditional Chinese herbal medicine widely used for the treatment of liver disease, whose main active components are lignans. However, the action mechanisms of the lignans in S. chinensis remain unclear. This study aimed to investigate the protective effect and related molecular mechanism of Schisandra lignan extract (SLE) against carbon tetrachloride- (CCl4-) induced acute liver injury in mice. Different doses of SLE at 50, 100, and 200 mg/kg were administered daily by gavage for 5 days before CCl4 treatment...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28244029/effects-of-probiotic-bacillus-as-a-substitute-for-antibiotics-on-antioxidant-capacity-and-intestinal-autophagy-of-piglets
#6
Yang Wang, Yanping Wu, Baikui Wang, Xuefang Cao, Aikun Fu, Yali Li, Weifen Li
The objective of this study was to evaluate effects of probiotic Bacillus amyloliquefaciens (Ba) as a substitute for antibiotics on growth performance, antioxidant ability and intestinal autophagy of piglets. Ninety piglets were divided into three groups: G1 (containing 150 mg/Kg aureomycin in the diet); G2 (containing 75 mg/Kg aureomycin and 1 × 10(8) cfu/Kg Ba in the diet); G3 (containing 2 × 10(8) cfu/Kg Ba in the diet without any antibiotics). Each treatment had three replications of ten pigs per pen...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28243846/protective-effect-of-tropisetron-on-high-glucose-induced-apoptosis-and-oxidative-stress-in-pc12-cells-roles-of-jnk-p38-mapks-and-mitochondria-pathway
#7
Azadeh Aminzadeh
Tropisetron, a selective 5-HT3 receptor (5-HT3R) antagonist, is widely used to counteract chemotherapy-induced emesis. There is growing interest concerning the beneficial effects of tropisetron on the treatment of several diseases. This study was carried out to examine effects of tropisetron on high glucose (HG) induced apoptosis in PC12 cells as a suitable culture model for studying neuronal functions. Apoptosis was induced by HG, and cells were treated with HG in the absence and presence of tropisetron for varying periods of time...
February 27, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28238930/the-acute-exposure-of-tetrachloro-p-benzoquinone-a-k-a-chloranil-triggers-inflammation-and-neurological-dysfunction-via-toll-like-receptor-4-signaling-the-protective-role-of-melatonin-preconditioning
#8
Juanli Fu, Xiaomin Xia, Zixuan Liu, Yawen Wang, Yuxin Wang, Qiong Shi, Xiufang Song, Erqun Song, Yang Song
This study is aimed to investigate the inflammation and neurological dysfunction induced by tetrachloro-p-benzoquinone (TCBQ) through Toll-like receptor 4 (TLR4) signaling. We also investigated the protective role of melatonin as an antioxidant and anti-inflammatory agent. In vitro model was established by rat pheochromocytoma PC12 cells, meanwhile, TLR4 wild-type (C57BL/6) and knockout mice (C57BL/10ScNJ TLR4(-/-)) were used as in vivo model. In vitro study showed TCBQ exposure enhanced the expression of TLR4, myeloid differentiation factor 88 (MyD88) at both transcriptional and post-transcriptional levels...
April 15, 2017: Toxicology
https://www.readbyqxmd.com/read/28237914/apigenin-attenuates-hippocampal-oxidative-events-inflammation-and-pathological-alterations-in-rats-fed-high-fat-fructose-diet
#9
Jagan Kalivarathan, Sathiya Priya Chandrasekaran, Kalpana Kalaivanan, Vidhya Ramachandran, Anuradha Carani Venkatraman
High calorie diet promotes oxidative stress and chronic low grade inflammation that predispose to brain dysfunction and neurodegeneration. Hippocampus region of the brain has been shown to be particularly sensitive to high calorie diet. We hypothesize that apigenin (API), a flavonoid could attenuate hippocampal derangements induced by high fat-high fructose diet (HFFD). In this study, we investigated the effects of API on oxidative stress and inflammation in the hippocampus, and compared with those of sitagliptin (STG), a standard drug with neuroprotective properties...
February 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28228072/curcumin-and-endothelial-function-evidence-and-mechanisms-of-protective-effects
#10
Maryam Saberi Karimian, Matteo Pirro, Thomas P Johnston, Muhammed Majeed, Amirhossein Sahebkar
BACKGROUND: The endothelium is a large paracrine organ regulating cell growth, vascular tone and thrombogenicity as well as platelet and leukocyte interactions. Endothelial function can be assessed by non-invasive techniques [e.g. flow-mediated vasodilation, nitroglycerin-mediated dilation and pulse wave velocity] and measuring specific circulating biomarkers [cell adhesion molecules, endothelial microparticles and endothelial progenitor cells]. Impaired endothelial function plays a key role in the development of atherosclerosis, arterial hypertension, heart failure, ischemia-reperfusion injury, Alzheimer's disease and other conditions...
February 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28216552/protective-effects-and-mechanism-of-meretrix-meretrix-oligopeptides-against-nonalcoholic-fatty-liver-disease
#11
Fangfang Huang, Shasha Zhao, Fangmiao Yu, Zuisu Yang, Guofang Ding
Meretrix meretrix oligopeptides (MMO) derived from shellfish have important medicinal properties. We previously obtained MMO from alcalase by hydrolysis processes. Here we examine the protective effects of MMO against nonalcoholic fatty liver disease (NAFLD) and explored the underlying mechanism. Human Chang liver cells were used in our experiments after exposure to palmitic acid at a final concentration of 15 μg/mL for 48 h to induce an overload of fatty acid as NAFLD model cells. Treatment with MMO for 24 h increased the viability of the NAFLD model cells by inhibiting apoptosis...
February 14, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28191274/the-neuroprotective-effects-of-carvacrol-on-ethanol-induced-hippocampal-neurons-impairment-via-the-antioxidative-and-antiapoptotic-pathways
#12
Peng Wang, Qian Luo, Hui Qiao, Hui Ding, Yonggang Cao, Juan Yu, Ruxia Liu, Qianlong Zhang, Hui Zhu, Lihui Qu
Chronic alcohol consumption causes hippocampal neuronal impairment, which is associated with oxidative stress and apoptosis. Carvacrol is a major monoterpenic phenol found in essential oils from the family Labiatae and has antioxidative stress and antiapoptosis actions. However, the protective effects of carvacrol in ethanol-induced hippocampal neuronal impairment have not been fully understood. We explored the neuroprotective effects of carvacrol in vivo and in vitro. Male C57BL/6 mice were exposed to 35% ethanol for 4 weeks to establish ethanol model in vivo, and hippocampal neuron injury was simulated by 200 mM ethanol in vitro...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28188924/daphnetin-mediated-nrf2-antioxidant-signaling-pathways-ameliorate-tert-butyl-hydroperoxide-t-bhp-induced-mitochondrial-dysfunction-and-cell-death
#13
Hongming Lv, Qinmei Liu, Junfeng Zhou, Guangyun Tan, Xuming Deng, Xinxin Ci
Daphnetin (Daph), a natural coumarin derivative isolated from plants of the Genus Daphne, possesses abundant biological activities, such as anti-inflammatory, antioxidant and anticancer properties. In the present study, we focused on investigating the protective effect of Daph against tert-butyl hydroperoxide (t-BHP)-induced oxidative damage, mitochondrial dysfunction and the involvement of underlying molecular mechanisms. Our findings indicated that Daph effectively inhibited t-BHP-stimulated cytotoxicity, cell apoptosis, and mitochondrial dysfunction, which are associated with suppressed reactive oxygen species (ROS) generation, decreased malondialdehyde (MDA) formation, increased superoxide dismutase (SOD) levels and glutathione (GSH)/GSSG (oxidized GSH) ratio...
February 7, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28181586/protective-effect-of-mangiferin-on-myocardial-ischemia-reperfusion-injury-in-streptozotocin-induced-diabetic-rats-role-of-age-rage-mapk-pathways
#14
Kapil Suchal, Salma Malik, Sana Irfan Khan, Rajiv Kumar Malhotra, Sameer N Goyal, Jagriti Bhatia, Santosh Kumari, Shreesh Ojha, Dharamvir Singh Arya
Hyperglycemia induced advanced glycation end products-receptor for advanced glycation end products (AGE-RAGE) activation is thought to involve in the development of cardiovascular disease in diabetics. Activation of AGE-RAGE axis results in the oxidative stress and inflammation. Mangiferin is found in the bark of mango tree and is known to treat diseases owing to its various biological activities. Thus, this study was designed to evaluate the effect of mangiferin in ischemia-reperfusion (IR) induced myocardial injury in diabetic rats...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28169456/evaluating-the-protective-effects-and-mechanisms-of-diallyl-disulfide-on-interlukin-1%C3%AE-induced-oxidative-stress-and-mitochondrial-apoptotic-signaling-pathways-in-cultured-chondrocytes
#15
Azam Hosseinzadeh, Davood Jafari, Tunku Kamarul, Abolfazll Bagheri, Ali M Sharifi
The protective effects and mechanisms of DADS on IL-1β-mediated oxidative stress and mitochondrial apoptosis were investigated in C28I2 human chondrocytes. The effect of various concentrations of DADS (1, 5 10, 25, 50, and 100 μM) on C28I2 cell viability was evaluated in different times (2, 4, 8, 16, and 24 h) to obtain the non-cytotoxic concentrations of drug by MTT-assay. The protective effect of non-toxic concentrations of DADS on experimentally induced oxidative stress and apoptosis by IL-1β in C28I2 was evaluated...
February 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28163684/the-new-synthetic-h2s-releasing-sdss-protects-mc3t3-e1-osteoblasts-against-h2o2-induced-apoptosis-by-suppressing-oxidative-stress-inhibiting-mapks-and-activating-the-pi3k-akt-pathway
#16
Xiaofei Yan, Haixia Wu, Zhiyuan Wu, Fei Hua, Dong Liang, Hong Sun, Yong Yang, Dejian Huang, Jin-Song Bian
Reactive oxygen species (ROS) are important in osteoporosis development. Oxidative stress induces apoptosis of osteoblasts and arrest of their differentiation. Both Danshensu (DSS) and hydrogen sulfide (H2S) produce significant antioxidant effect in various systems. In this study, we synthesized SDSS, a novel H2S-releasing compound derived from DSS, and studied its antioxidant effect in an H2O2-induced MC3T3-E1 osteoblastic cell injury model. We first characterized the H2S releasing property of SDSS in both in vivo and in vitro models...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28160636/daily-sesame-oil-supplementation-attenuates-local-renin-angiotensin-system-via-inhibiting-mapk-activation-and-oxidative-stress-in-cardiac-hypertrophy
#17
Chuan-Teng Liu, Ming-Yie Liu
The renin-angiotensin system (RAS) is involved in the development of left ventricular hypertrophy (LVH) by which increases cardiac morbidity and mortality. Activation of mitogen-activated protein kinases (MAPKs) and oxidative stress are important in RAS-mediated cardiac hypertrophy. Sesame oil, a potent antioxidant, attenuates hypertension-dependent LVH. We examined the protective role of sesame oil on RAS-mediated MAPK activation and oxidative stress in rats. We induced LVH using a hypertensive model by subcutaneously injecting deoxycorticosterone acetate (DOCA; 15 mg/ml/kg in mineral oil; twice weekly for 5 weeks) and supplementing with 1% sodium chloride drinking water (DOCA/salt) to uninephrectomized rats...
May 28, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28152447/astaxanthin-pretreatment-attenuates-acetaminophen-induced-liver-injury-in-mice
#18
Jingyao Zhang, Simin Zhang, Jianbin Bi, Jingxian Gu, Yan Deng, Chang Liu
BACKGROUND: Acetaminophen (APAP) is a conventional drug widely used in the clinic because of its antipyretic-analgesic effects. However, accidental or intentional APAP overdoses induce liver injury and even acute liver failure (ALF). Astaxanthin (ASX) is the strongest antioxidant in nature that shows preventive and therapeutic properties, such as ocular protection, anti-tumor, anti-diabetes, anti-inflammatory, and immunomodulatory effects. The aim of present study was to determine whether ASX pretreatment provides protection against APAP-induced liver failure...
January 31, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28151469/bnip3-upregulation-via-stimulation-of-erk-and-jnk-activity-is-required-for-the-protection-of-keratinocytes-from-uvb-induced-apoptosis
#19
Mariko Moriyama, Hiroyuki Moriyama, Junki Uda, Hirokazu Kubo, Yuka Nakajima, Arisa Goto, Takashi Morita, Takao Hayakawa
The human skin has an important role in barrier function. Ultraviolet rays (UV) from sunlight exposure can cause cell apoptosis in the skin epidermis, resulting in the disruption of the barrier. Previously, we have demonstrated that BNIP3 stimulates autophagy in epidermal keratinocytes and has a protective effect in these cells upon UVB irradiation. In this study, we found that the accumulation of reactive oxygen species (ROS) by UVB irradiation was sufficient to trigger the activation of JNK and ERK mitogen-activated protein kinase (MAPK) in human primary epidermal keratinocytes...
February 2, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28146074/lannea-coromandelica-houtt-merr-induces-heme-oxygenase-1-ho-1-expression-and-reduces-oxidative-stress-via-the-p38-c-jun-n-terminal-kinase-nuclear-factor-erythroid-2-related-factor-2-p38-jnk-nrf2-mediated-antioxidant-pathway
#20
Md Badrul Alam, Kyoo-Ri Kwon, Seok-Hyun Lee, Sang-Han Lee
The leaves of Lannea coromandelica (Houtt.) Merr. are used in the Garo, Pahan, and Teli tribal communities of Bangladesh as a traditional medicinal plant to treat hepatitis, diabetes, ulcers, heart disease, and dysentery. However, there have been limited phytochemical and biological studies on the bark of L. coromandelica. This study aimed to investigate the antioxidant activities of L. coromandelica bark extract (LCBE) and the underlying mechanism using RAW 264.7 cells. The LCBE was analysed by high-pressure liquid chromatography (HPLC) to detect its key polyphenolic compounds...
January 29, 2017: International Journal of Molecular Sciences
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