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https://www.readbyqxmd.com/read/29401599/reduced-endothelial-thioredoxin-interacting-protein-protects-arteries-from-damage-induced-by-metabolic-stress-in-vivo
#1
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
#2
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
#3
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)...
January 4, 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
#4
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
#5
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
#6
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
#7
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
#8
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...
November 15, 2017: 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
#9
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
#10
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
#11
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...
October 12, 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
#12
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
#13
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
https://www.readbyqxmd.com/read/28890350/thioredoxin-interacting-protein-promotes-high-glucose-induced-macrovascular-endothelial-dysfunction
#14
Xiaoyu Li, Karen L Kover, Daniel P Heruth, Dara J Watkins, Yanchun Guo, Wayne V Moore, Luke G He, Mengwei Zang, Mark A Clements, Yun Yan
Thioredoxin-interacting protein (TXNIP) emerges as a central regulator for glucose homeostasis, which goes awry in diabetic subjects. Endothelial dysfunction is considered the earliest detectable stage of cardiovascular disease (CVD), a major complication of diabetes. Here, we hypothesize that TXNIP may promote endothelial dysfunction seen in Type 1 diabetes mellitus (T1D). Using a T1D-like rat model, we found that diabetic rats showed significantly higher TXNIP mRNA and protein levels in peripheral blood, compared to their non-diabetic counterparts...
November 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28871193/estradiol-regulates-txnip-and-prevents-intermittent-hypoxia-induced-vascular-injury
#15
Xiao Fei Lan, Xiu Juan Zhang, Ying Ni Lin, Qiong Wang, Hua Jun Xu, Li Na Zhou, Pei Li Chen, Qing Yun Li
Chronic intermittent hypoxia (IH) contributes to obstructive sleep apnea (OSA)-related cardiovascular diseases through increasing oxidative stress. It has been widely recognized that estradiol decreases the risk for cardiovascular disease, but the estrogen replacement therapy is limited for its side effects. Thioredoxin (Trx) and its endogenous inhibitor, thioredoxin-interacting protein (Txnip), are associated with the protective effect of estradiol in some conditions. In this study, we aimed to explore whether estradiol could protect against IH-induced vascular injury, and the possible effect of Trx-1/Txnip in this process...
September 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28843855/metformin-protects-against-retinal-cell-death-in-diabetic-mice
#16
Yoon Sook Kim, Minjun Kim, Mee Young Choi, Dong Hoon Lee, Gu Seob Roh, Hyun Joon Kim, Sang Soo Kang, Gyeong Jae Cho, Seong-Jae Kim, Ji-Myong Yoo, Wan Sung Choi
Retinal degeneration is an early feature of diabetic retinopathy, the major cause of blindness in the developed world. Here we investigated how the widely used antidiabetic drug metformin reduces retinal injury in diabetic mice. Metformin was orally administered to control mice or mice with streptozotocin-induced diabetes. Western blot analysis showed that levels of O-linked β-N-acetylglucosamine (O-GlcNAc) transferase (OGT) and other related proteins such as carbohydrate-responsive element-binding protein (ChREBP) and thioredoxin-interacting protein (TXNIP) were significantly increased, and nuclear factor kappaB (NF-κB) and poly (ADP-ribose) polymerase (PARP) were activated in the diabetic retinas or retinal pigment epithelial (RPE) cells exposed to high glucose compared to controls...
October 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28843270/thioredoxin-interact-ing-pro-t-e-in-txnip-and-transglutaminase-2-tgm2-expression-in-meningiomas-of-different-grades-and-the-role-of-their-expression-in-meningioma-recurrence-and-prognosis
#17
Ola A Harb, Walid SH Elsayed, Eman I Ismail, Mostafa M Toam, Mohamed G Ammar
Background: Meningiomas are common central nervous system (CNS) tumors that account for thirty percent of primary intracranial tumors.. The accuracy of predicting meningioma recurrence and progression is not enough. So, there is a real need for discovering recent factors for identification of the relapse risk, progression rates, which patients will need aggressive treatment and predicting and improving patients’ survival. Thioredoxin-interacting-protein [TXNIP] is an alpha-arrestin-protein family member that is mapped on chromosome 1-q21–22 and is found to participate in cellular redox reactions regulations and control...
August 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28817808/ppar%C3%AE-agonist-stimulated-angiogenesis-by-improving-endothelial-precursor-cell-function-via-a-nlrp3-inflammasome-pathway
#18
Yaping Deng, Xue Han, Zheng Yao, Yuannan Sun, Jiawen Yu, Jian Cai, Guofei Ren, Guojun Jiang, Feng Han
BACKGROUND: Impaired wound healing is a common complication of diabetes and is the leading cause of lower extremity amputation. Treatment with fenofibrate, a peroxisome proliferators-activated receptor α (PPARα) agonist, was associated with a lower risk of amputations, particularly minor amputations without known large-vessel diseases, probably through non-lipid mechanisms. The current study aimed to test our hypothesis that fenofibrate stimulates angiogenesis and restores endothelial precursor cell (EPC) function via inhibiting Nod-like receptor protein 3 (NLRP3) inflammasome in streptozotocin (STZ)-induced diabetic mice...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28811274/hypoxia-in-combination-with-muscle-contraction-improves-insulin-action-and-glucose-metabolism-in-human-skeletal-muscle-via-the-hif-1%C3%AE-pathway
#19
Sven W Görgens, Tim Benninghoff, Kristin Eckardt, Christian Springer, Alexandra Chadt, Anita Melior, Jakob Wefers, Andrea Cramer, Jørgen Jensen, Kåre I Birkeland, Christian A Drevon, Hadi Al-Hasani, Jürgen Eckel
Skeletal muscle insulin resistance is the hallmark of type 2 diabetes and develops long before the onset of the disease. It is well accepted that physical activity improves glycemic control, but the knowledge on underlying mechanisms mediating the beneficial effects remains incomplete. Exercise is accompanied by a decrease in intramuscular oxygen levels, resulting in induction of HIF-1α. HIF-1α is a master regulator of gene expression and might play an important role in skeletal muscle function and metabolism...
November 2017: Diabetes
https://www.readbyqxmd.com/read/28765935/fbw7-increases-the-chemosensitivity-of-pancreatic-cancer-cells-to-gemcitabine-through-upregulation-of-ent1
#20
Qiangsheng Hu, Yi Qin, Bo Zhang, Chen Liang, Shunrong Ji, Si Shi, Wenyan Xu, Jinfeng Xiang, Dingkong Liang, Quanxing Ni, Xianjun Yu, Jin Xu
F-box and WD repeat domain-containing 7 (FBW7) has been characterized as a tumor suppressor, and its mutation or decreased expression has been observed in many types of human cancers. Our recent studies have uncovered that in pancreatic cancer, the KRAS mutation decreased FBW7 expression through phosphorylation and subsequent ubiquitination. Moreover, FBW7 inhibited aerobic glycolysis in pancreatic cancer via induction of thioredoxin-interacting protein (TXNIP), a mitochondrial localized tumor suppressor. The roles of FBW7 in anti-apoptosis and drug resistance via proteosomal degradation of myeloid cell leukemia-1 (MCL-1), which is an anti-apoptotic factor have been reported...
October 2017: Oncology Reports
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