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https://www.readbyqxmd.com/read/29668323/deficiency-of-selenoprotein-s-an-endoplasmic-reticulum-resident-oxidoreductase-impairs-the-contractile-function-of-fast-twitch-hindlimb-muscles
#1
Alex Bernard Addinsall, Craig Robert Wright, Christopher S Shaw, Natasha L McRae, Leonard George Forgan, Chia-Heng Weng, Xavier A Conlan, Paul S Francis, Zoe M Smith, Sofianos Andrikopoulos, Nicole Stupka
Selenoprotein S (Seps1) is an endoplasmic reticulum (ER) resident antioxidant implicated in ER stress and inflammation. In human vastus lateralis and mouse hindlimb muscles, Seps1 localization and expression was fiber type specific. In male Seps1+/- heterozygous mice, spontaneous physical activity was reduced compared to wild type littermates ( d=1.10, P=0.029). A similar trend also observed in Seps1-/- knockout mice ( d=1.12, P=0.051). Whole body metabolism, body composition, extensor digitorum longus (EDL) and soleus mass, and myofibre diameter were unaffected by genotype...
April 18, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29662437/ketogenic-diet-improves-brain-ischemic-tolerance-and-inhibits-nlrp3-inflammasome-activation-by-preventing-drp1-mediated-mitochondrial-fission-and-endoplasmic-reticulum-stress
#2
Min Guo, Xun Wang, Yanxin Zhao, Qi Yang, Hongyan Ding, Qiang Dong, Xingdong Chen, Mei Cui
Background : Neuroprotective effects of ketogenic diets (KD) have been reported in stroke models, and nucleotide-binding domain (NOD)-like receptor protein 3 (NLRP3) inflammasome has also been implicated in the pathogenesis of stroke. This study aimed to investigate the effects of KD on NLRP3 inflammasome and explore the potential molecular mechanisms. Methods : In in vivo study, mice were fed with KD for 3 weeks and then subjected to middle cerebral artery occlusion/reperfusion (MCAO/R)-injury. In in vitro study, SH-SY-5Y cells were treated with β-hydroxybutyrate (BHB) followed by oxygen-glucose deprivation/reoxygenation (OGD/R)...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29568876/fisetin-administration-improves-lps-induced-acute-otitis-media-in-mouse-in-vivo
#3
Peng Li, Dan Chen, Yang Huang
Acute otitis media is one of the most common infectious diseases worldwide in spite of the widespread vaccination. The present study was conducted to explore the effects of fisetin on mouse acute otitis media models. The animal models were established by lipopolysaccharide (LPS) injection into the middle ear of mice via the tympanic membrane. Fisetin was administered to mice for ten days through intragastric administration immediate after LPS application. Hematoxylin and eosin (H&E) staining was performed and the pro-inflammatory cytokines, including interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), IL-6 and VEGF, were measured through enzyme-linked immunosorbent assay (ELISA) method and RT-qPCR analysis...
March 22, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29524408/downregulation-of-txnip-leads-to-high-proliferative-activity-and-estrogen-dependent-cell-growth-in-breast-cancer
#4
Jun Won Park, Su Hyung Lee, Gye-Hyung Woo, Hyo-Jung Kwon, Dae-Yong Kim
TXNIP is a potent tumor suppressor with reduced expression in various types of human cancer. The prognostic and predictive power of TXNIP has been recognized in human breast cancer. The aim of this study is to investigate the clinical relevance and functional roles of TXNIP downregulation in breast cancer. We examined TXNIP expression at the protein level in tissue microarray (TMA)-based human breast cancers and its correlation with clinical parameters and molecular markers on immunohistochemistry (IHC). Compared with normal tissues, TXNIP expression was significantly decreased in human breast cancer tissues and animal mammary tumors, along with tumor progression...
March 7, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29512754/3-5-4-tri-o-acetylresveratrol-attenuates-seawater-inhalation-induced-acute-respiratory-distress-syndrome-via-thioredoxin-1-pathway
#5
Yilin Zhao, Lijie Ma, Ruixuan Wang, Tingting Chen, Xueying Liu, Faguang Jin
The protecting effects of 3,5,4'-tri-O-acetylresveratrol (AC-Res) on seawater inhalation-induced acute respiratory distress syndrome (ARDS) by interfering with the activation of thioredoxin-1 (Trx-1) pathway were evaluated. Seawater inhalation-induced ARDS was assessed by magnitude of pulmonary edema and lung inflammation. Oxidative stress was tested by T-SOD activity and MDA content in lungs and cells. Besides, Trx-1, nuclear factor erythroid 2-related factor 2 (Nrf2) and Txnip expression were measured to explore how seawater induced oxidative stress and the mechanism by which AC-Res attenuated seawater inhalation-induced ARDS...
March 1, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29475852/alcohol-dysregulates-mir-148a-in-hepatocytes-through-foxo1-facilitating-pyroptosis-via-txnip-overexpression
#6
Mi Jeong Heo, Tae Hyun Kim, Jueng Soo You, Delia Blaya, Pau Sancho-Bru, Sang Geon Kim
OBJECTIVE: Alcoholic liver disease (ALD) is a leading cause of death among chronic liver diseases. However, its pathogenesis has not been completely established. MicroRNAs (miRNAs) are key contributors to liver diseases progression. This study investigated hepatocyte-abundant miRNAs dysregulated by ALD, its impact on hepatocyte injury and the underlying basis. DESIGN: Alcoholic hepatitis (AH) human and animal liver samples and hepatocytes were used to assess miR-148a levels...
February 23, 2018: Gut
https://www.readbyqxmd.com/read/29475133/reactive-oxygen-species-promote-tubular-injury-in-diabetic-nephropathy-the-role-of-the-mitochondrial-ros-txnip-nlrp3-biological-axis
#7
Yachun Han, Xiaoxuan Xu, Chengyuan Tang, Peng Gao, Xianghui Chen, Xiaofen Xiong, Ming Yang, Shikun Yang, Xuejing Zhu, Shuguang Yuan, Fuyou Liu, Li Xiao, Yashpal S Kanwar, Lin Sun
NLRP3/IL-1β activation via thioredoxin (TRX)/thioredoxin-interacting protein (TXNIP) following mitochondria ROS (mtROS) overproduction plays a key role in inflammation. However, the involvement of this process in tubular damage in the kidneys of patients with diabetic nephropathy (DN) is unclear. Here, we demonstrated that mtROS overproduction is accompanied by decreases in TRX expression and TXNIP up-regulation. In addition, we discovered that mtROS overproduction is also associated with increases in NLRP3/IL-1β and TGF-β expression in the kidneys of patients with DN and db/db mice...
February 15, 2018: Redox Biology
https://www.readbyqxmd.com/read/29401599/reduced-endothelial-thioredoxin-interacting-protein-protects-arteries-from-damage-induced-by-metabolic-stress-in-vivo
#8
Tatiana Bedarida, Alison Domingues, Stephanie Baron, Chrystophe Ferreira, Francoise Vibert, Charles-Henry Cottart, Jean-Louis Paul, Virginie Escriou, Pascal Bigey, Pascale Gaussem, Teddy Leguillier, Valerie Nivet-Antoine
Although thioredoxin-interacting protein (TXNIP) is involved in a variety of biologic functions, the contribution of endothelial TXNIP has not been well defined. To investigate the endothelial function of TXNIP, we generated a TXNIP knockout mouse on the Cdh5-cre background (TXNIPfl/fl cdh5cre). Control (TXNIPfl/fl) and TXNIPfl/fl cdh5cre mice were fed a high protein-low carbohydrate (HP-LC) diet for 3 mo to induce metabolic stress. We found that TXNIPfl/fl and TXNIPfl/fl cdh5cre mice on an HP-LC diet displayed impaired glucose tolerance and dyslipidemia concretizing the metabolic stress induced...
January 17, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29394934/ire1%C3%AE-inhibition-decreased-txnip-nlrp3-inflammasome-activation-through-mir-17-5p-after-neonatal-hypoxic-ischemic-brain-injury-in-rats
#9
Di Chen, Brandon J Dixon, Desislava M Doycheva, Bo Li, Yang Zhang, Qin Hu, Yue He, Zongduo Guo, Derek Nowrangi, Jerry Flores, Valery Filippov, John H Zhang, Jiping Tang
BACKGROUND: The endoplasmic reticulum (ER) is responsible for the control of correct protein folding and protein function which is crucial for cell survival. However, under pathological conditions, such as hypoxia-ischemia (HI), there is an accumulation of unfolded proteins thereby triggering the unfolded protein response (UPR) and causing ER stress which is associated with activation of several stress sensor signaling pathways, one of them being the inositol requiring enzyme-1 alpha (IRE1α) signaling pathway...
February 2, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29328484/additive-antitumour-effect-of-d%C3%A2-allose-in-combination-with-cisplatin-in-non-small-cell-lung-cancer-cells
#10
Nobuhiro Kanaji, Kazuyo Kamitori, Akram Hossain, Chisato Noguchi, Ayako Katagi, Norimitsu Kadowaki, Masaaki Tokuda
D‑allose is a rare sugar which has been shown to have growth inhibitory effects in several kinds of malignancies. However, the effect of D‑allose on lung cancer progression has not been previously studied. To investigate the antitumour effect of D‑allose in lung cancer cells and its mechanism, human non-small cell lung cancer (NSCLC) cell lines (squamous cell carcinomas: EBC1 and VMRC‑LCD; adenocarcinomas: A549, HI1017, RERF‑LC‑A1 and NCI-H1975) were treated with D‑allose (50 mM) with or without cisplatin (5 µM)...
March 2018: Oncology Reports
https://www.readbyqxmd.com/read/29218237/increased-mir-21a-provides-metabolic-advantages-through-suppression-of-fbp1-expression-in-non-small-cell-lung-cancer-cells
#11
Qingchun Dai, Na Li, Xiaohong Zhou
Lung cancer is the most common solid tumor and the leading cause of cancer-related mortality worldwide. miR-21 is one of the most commonly observed aberrant miRNAs in human cancers. However, the biological roles of miR-21 in glucose metabolism of non-small cell lung cancer (NSCLC) cells remain unknown. In the present study, our findings demonstrated that miR-21 promoted glucose uptake and increased TXNIP expression. miR-21 increased lactate generation and decreased oxygen consumption in NSCLC cells. Moreover, we found that miR-21 promoted glycolysis and decreased OXPHOS...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/29180214/thioredoxin-1-attenuates-sepsis-induced-cardiomyopathy-after-cecal-ligation-and-puncture-in-mice
#12
Rickesha L Wilson, Vaithinathan Selvaraju, Rajesh Lakshmanan, Mahesh Thirunavukkarasu, Jacob Campbell, David W McFadden, Nilanjana Maulik
BACKGROUND: Sepsis is a leading cause of mortality among patients in intensive care units across the USA. Thioredoxin-1 (Trx-1) is an essential 12 kDa cytosolic protein that, apart from maintaining the cellular redox state, possesses multifunctional properties. In this study, we explored the possibility of controlling adverse myocardial depression by overexpression of Trx-1 in a mouse model of severe sepsis. METHODS: Adult C57BL/6J and Trx-1Tg/+ mice were divided into wild-type sham (WTS), wild-type cecal ligation and puncture (WTCLP), Trx-1Tg/+ sham (Trx-1Tg/+ S), and Trx-1Tg/+ CLP groups...
December 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29169424/-sodium-hydrosulfide-attenuates-myocardial-injury-through-activating-thioredoxin-system-in-diabetic-rats
#13
Qiang Jia, Rui Yang, Xiaofen Liu, Qiyi Wang, Haoyu Lu, Shanfeng Ma
Objective To investigate the effect of exogenous hydrogen sulfide from sodium hydrosulfide (NaHS) on cardiac thioredoxin (Trx) system in diabetic rats. Methods Male Sprague-Dawley rats were randomly divided into a normal group, a diabetic group, and three NaHS (14, 28 and 56 μmol/kg) treatment groups, with 6 rats in each group. Type 1 diabetes was induced in the groups by a single intraperitoneal (i.p.) injection of streptozotocin. At the fifth week after modeling, the NaHS treatment groups were injected (i...
October 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/29169415/-over-expression-of-thioredoxin-interacting-protein-promotes-apoptosis-of-min6-cells-via-activating-p38mapk-pathway
#14
Wenzhen Deng, Yang Li, Yanjun Jia, Liang Tang, Qirui He, Dongfang Liu
Objective To investigate the effect of thioredoxin interacting protein (TXNIP) over-expression on the apoptosis of MIN6 β-cells and the mechanism involved. Methods Lentivirus carrying TXNIP gene was used to infect MIN6 β-cells in logarithmic growth phase, and the infection efficiency was evaluated by fluorescence microscope and Western blotting. Then MIN6 β-cells were divided into three groups: control group, empty lentivirus vector (LV-GFP) group and TXNIP over-expression (LV-GFP-TXNIP) group. CCK-8 assay was used to detect cell proliferation...
October 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/29156529/alpinetin-improved-high-fat-diet-induced-non-alcoholic-fatty-liver-disease-nafld-through-improving-oxidative-stress-inflammatory-response-and-lipid-metabolism
#15
Yong Zhou, Yin-Lu Ding, Jian-Liang Zhang, Peng Zhang, Jin-Qing Wang, Zhao-Hua Li
The non-alcoholic fatty liver disease (NAFLD) has become a serious medical problem and an increasing threat to public health. It is characterized by the abnormal fat accumulation in liver without excessive alcohol intake. The concurrent NAFLD might up-regulate the risk of chronic kidney disease as well as the mortality rate. Though various drugs have been investigated to attenuate NAFLD, further study is still necessary to find new therapeutic strategy and to reveal the underlying molecular mechanism. In the present study, NAFLD animal models were induced by feeding with high fat (HF) diet for 8 weeks...
January 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29077742/dna-methylation-and-gene-expression-of-txnip-in-adult-offspring-of-women-with-diabetes-in-pregnancy
#16
Azadeh Houshmand-Oeregaard, Line Hjort, Louise Kelstrup, Ninna S Hansen, Christa Broholm, Linn Gillberg, Tine D Clausen, Elisabeth R Mathiesen, Peter Damm, Allan Vaag
BACKGROUND: Fetal exposure to maternal diabetes increases the risk of type 2 diabetes (T2DM), possibly mediated by epigenetic mechanisms. Low blood TXNIP DNA methylation has been associated with elevated glucose levels and risk of T2DM, and increased skeletal muscle TXNIP gene expression was reported in subjects with impaired glucose metabolism or T2DM. Subcutaneous adipose tissue (SAT) and skeletal muscle play a key role in the control of whole body glucose metabolism and insulin action...
2017: PloS One
https://www.readbyqxmd.com/read/29040017/aralia-elata-miq-seem-extract-decreases-o-glcnac-transferase-expression-and-retinal-cell-death-in-diabetic-mice
#17
Yoon Sook Kim, Minjun Kim, Mee Young Choi, Dong Hoon Lee, Gu Seob Roh, Hyun Joon Kim, Sang Soo Kang, Gyeong Jae Cho, Ki Hun Park, Seong-Jae Kim, Ji-Myong Yoo, Wan Sung Choi
Aralia elata (Miq) Seem (AES) is a medicinal plant used in traditional Chinese and Korean medicine for the treatment of several diseases, including diabetes. This study aimed to investigate the neuroprotective effect of AES extract against high glucose-induced retinal injury in diabetic mice. AES extract (20 and 100 mg/kg body weight) was orally administered to control mice or mice with streptozotocin-induced diabetes. Protein levels of O-linked β-N-acetylglucosamine (O-GlcNAc) transferase (OGT), carbohydrate-responsive element-binding protein (ChREBP), sterol regulatory element-binding protein (SREBP)-1, thioredoxin-interacting protein (TXNIP), fatty acid synthase (FAS), and acetyl CoA carboxylase (ACC) were analyzed by western blotting...
October 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29031534/salidroside-alleviates-high-glucose-induced-oxidative-stress-and-extracellular-matrix-accumulation-in-rat-glomerular-mesangial-cells-by-the-txnip-nlrp3-inflammasome-pathway
#18
Shiying Wang, Xinxin Zhao, Suxia Yang, Baoping Chen, Jun Shi
Diabetic nephropathy (DN) is a metabolic disease characterized by mesangial cell proliferation and extracellular matrix (ECM) accumulation. Salidroside (SAL) is the major ingredient in Rhodiola rosea and possesses beneficial effects on DN. This study aimed to evaluate the effect of SAL on high glucose (HG)-induced oxidative stress and ECM accumulation and the underlying mechanism. Rat glomerular mesangial cells HBZY-1 were induced by high glucose (HG) in the presence or absence of SAL. Cell proliferation was measured by CCK-8 assay...
December 25, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28980863/addition-of-exogenous-sodium-palmitate-increases-the-iapp-insulin-mrna-ratio-via-gpr40-in-human-endoc-%C3%AE-h1-cells
#19
Camilla Krizhanovskii, Rikard G Fred, Marie E Oskarsson, Gunilla T Westermark, Nils Welsh
BACKGROUND: Enhanced IAPP production may contribute to islet amyloid formation in type 2 diabetes. The objective of this study was to determine the effects of the saturated fatty acid palmitate on IAPP levels in human β-cells. METHODS: EndoC-βH1 cells and human islets were cultured in the presence of sodium palmitate. Effects on IAPP/insulin mRNA expression and secretion were determined using real-time qPCR/ELISA. Pharmacological activators and/or inhibitors and RNAi were used to determine the underlying mechanisms...
August 2017: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/28966753/short-term-high-dose-of-quercetin-and-resveratrol-alters-aging-markers-in-human-kidney-cells
#20
Fatemeh Abharzanjani, Mohammad Afshar, Mina Hemmati, Maryam Moossavi
BACKGROUND: Hyperglycemia-mediated oxidative stress implicates in etiology of kidney cell aging and diabetic nephropathy. We evaluated the effects of different doses of resveratrol and quercetin and their combination therapy on aging marker in human kidney cell culture under hyperglycemia condition. METHODS: Human embryonic kidney cell (HEK-293) was cultured in Dulbecco's Modified Eagle Medium (DMEM) containing 100 mM (18 mg/L) for 24 h. The cells were treated with resveratrol (2...
2017: International Journal of Preventive Medicine
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