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https://www.readbyqxmd.com/read/27929088/thioredoxin-interacting-protein-regulates-haematopoietic-stem-cell-ageing-and-rejuvenation-by-inhibiting-p38-kinase-activity
#1
Haiyoung Jung, Dong Oh Kim, Jae-Eun Byun, Won Sam Kim, Mi Jeong Kim, Hae Young Song, Young Kwan Kim, Du-Kyeong Kang, Young-Jun Park, Tae-Don Kim, Suk Ran Yoon, Hee Gu Lee, Eun-Ji Choi, Sang-Hyun Min, Inpyo Choi
Ageing is a natural process in living organisms throughout their lifetime, and most elderly people suffer from ageing-associated diseases. One suggested way to tackle such diseases is to rejuvenate stem cells, which also undergo ageing. Here we report that the thioredoxin-interacting protein (TXNIP)-p38 mitogen-activated protein kinase (p38) axis regulates the ageing of haematopoietic stem cells (HSCs), by causing a higher frequency of long-term HSCs, lineage skewing, a decrease in engraftment, an increase in reactive oxygen species and loss of Cdc42 polarity...
December 8, 2016: Nature Communications
https://www.readbyqxmd.com/read/27898405/n-acetyl-cysteine-attenuated-the-deleterious-effects-of-advanced-glycation-end-products-on-the-kidney-of-non-diabetic-rats
#2
Karina Thieme, Karolline S Da Silva, Nelly T Fabre, Sergio Catanozi, Maria Beatriz Monteiro, Daniele Pereira Santos-Bezerra, Juliana Martins Costa-Pessoa, Maria Oliveira-Souza, Ubiratan F Machado, Marisa Passarelli, Maria Lucia Correa-Giannella
AIM: To assess the renal effects of chronic exposure to advanced glycation end-products (AGEs) in the absence of diabetes and the potential impact of concomitant treatment with the antioxidant N-acetyl cysteine (NAC). METHODS: Wistar rats received intraperitoneally 20 mg/kg/day of albumin modified (AlbAGE) or not (AlbC) by advanced glycation for 12 weeks and oral NAC (600mg/L; AlbAGE+NAC and AlbC+NAC, respectively). Biochemical, urinary and renal morphological analyses; carboxymethyl-lysine (CML, an AGE), CD68 (macrophage infiltration), and 4-hydroxynonenal (4-HNE, marker of oxidative stress) immunostaining; intrarenal mRNA expression of genes belonging to pathways related to AGEs (Ager, Ddost, Nfkb1), renin-angiotensin system (Agt, Ren, Ace), fibrosis (Tgfb1, Col4a1), oxidative stress (Nox4, Txnip), and apoptosis (Bax, Bcl2); and reactive oxidative species (ROS) content were performed...
November 30, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27832995/protective-effect-of-sophoraflavanone-g-on-streptozotocin-stz-induced-inflammation-in-diabetic-rats
#3
Hanqing Wang, Li Chen, Liming Zhang, Xiaojuan Gao, Yinghua Wang, Tao Weiwei
The present study was designed to investigate the protective effect of Sophoraflavanone G (SG) on streptozotocin (STZ)-induced diabetic rats. The rats were intraperitoneally injected with STZ (35mg/kg). 7days later, the rats were intragastrically administered with Metformin (MET, 150mg/kg), SG (20mg/kg) or SG (40mg/kg) once daily for consecutive 30 days. The animals were anaesthetized, the blood and liver samples were also collected for further assay. SG significantly decreased the serum levels of glucose, insulin, aspartate transaminase (AST), alanine aminotransferase (ALT)...
November 7, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27785530/activation-of-the-txnip-nlrp3-inflammasome-pathway-contributes-to-inflammation-in-diabetic-retinopathy-a-novel-inhibitory-effect-of-minocycline
#4
Wei Chen, Minjie Zhao, Shuzhi Zhao, Qianyi Lu, Lisha Ni, Chen Zou, Li Lu, Xun Xu, Huaijin Guan, Zhi Zheng, Qinghua Qiu
OBJECTIVE AND DESIGN: Chronic low-grade inflammation occurs in diabetic retinopathy (DR), but the underlying mechanism(s) remains (remain) unclear. NLRP3 inflammasome activation is involved in several other inflammatory diseases. Thus, we investigated the role of the NLRP3 inflammasome signaling pathway in the pathogenesis of DR. METHODS: Diabetes was induced in rats by streptozotocin treatment for 8 weeks. They were treated with NLRP3 shRNA or minocycline during the last 4 weeks...
October 26, 2016: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/27762463/differential-expression-of-thioredoxin-binding-protein-2-txnip-in-human-placenta-possible-involvement-of-hypoxia-in-its-suppression-during-early-pregnancy
#5
Haruta Mogami, Shigeo Yura, Eiji Kondoh, Hiroshi Masutani, Junji Yodoi, Ikuo Konishi
AIM: Thioredoxin binding protein-2 (TBP-2), which is identical to thioredoxin interacting protein (Txnip), controls cellular proliferation and differentiation. The aim of the present study was to compare TBP-2 protein and mRNA expression in human placenta during the three trimesters of pregnancy and to investigate the role of hypoxia in the change of these expressions in placental tissue. A secondary objective was to determine the gene expression of peroxisome proliferator-activated receptors (PPARs) in TBP-2 deficient placenta using TBP-2 gene disrupted mice (TBP-2(-/-) )...
October 20, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27753144/melatonin-rescues-cardiac-thioredoxin-system-during-ischemia-reperfusion-injury-in-acute-hyperglycemic-state-by-restoring-notch1-hes1-akt-signaling-in-a-membrane-receptor-dependent-manner
#6
Liming Yu, Chongxi Fan, Zhi Li, Jian Zhang, Xiaodong Xue, Yinli Xu, Guolong Zhao, Yang Yang, Huishan Wang
Stress hyperglycemia is commonly observed in patients suffering from ischemic heart disease. It not only worsens cardiovascular prognosis but also attenuates the efficacies of various cardioprotective agents. This study aimed to investigate the protective effect of melatonin against myocardial ischemia-reperfusion (MI/R) injury in acute hyperglycemic state with a focus on Notch1/Hes1/Akt signaling and intracellular thioredoxin (Trx) system. Sprague-Dawley rats were subjected to MI/R surgery and high glucose (HG, 500 g/L) infusion (4 ml/kg/h) to induce temporary hyperglycemia...
October 18, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27746687/ginsenoside-rb1-and-compound-k-improve-insulin-signaling-and-inhibit-er-stress-associated-nlrp3-inflammasome-activation-in-adipose-tissue
#7
Weijie Chen, Junlian Wang, Yong Luo, Tao Wang, Xiaochun Li, Aiyun Li, Jia Li, Kang Liu, Baolin Liu
BACKGROUND: This study was designed to investigate whether ginsenoside Rb1 (Rb1) and compound K (CK) ameliorated insulin resistance by suppressing endoplasmic reticulum (ER) stress-induced inflammation in adipose tissue. METHODS: To induce ER stress, epididymal adipose tissue from mice or differentiated 3T3 adipocytes were exposed to high glucose. The effects of Rb1 and CK on reactive oxygen species production, ER stress, TXNIP/NLRP3 inflammasome activation, inflammation, insulin signaling activation, and glucose uptake were detected by western blot, emzyme-linked immunosorbent assay, or fluorometry...
October 2016: Journal of Ginseng Research
https://www.readbyqxmd.com/read/27626926/differential-lipotoxic-effects-of-palmitate-and-oleate-in-activated-human-hepatic-stellate-cells-and-epithelial-hepatoma-cells
#8
Alexandra M Hetherington, Cynthia G Sawyez, Emma Zilberman, Alexandra M Stoianov, Debra L Robson, Nica M Borradaile
BACKGROUND/AIMS: Nonalcoholic fatty liver disease (NAFLD) progression to fibrosis, cirrhosis and hepatocellular carcinoma, alters the cellular composition of this organ. During late-stage NAFLD, fibrotic and possibly cancerous cells can proliferate and, like normal hepatocytes, are exposed to high concentrations of fatty acids from both surrounding tissue and circulating lipid sources. We hypothesized that primary human activated hepatic stellate cells and epithelial hepatoma (HepG2) cells respond differently to lipotoxic conditions, and investigated the mechanisms involved...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27589720/ruscogenin-attenuates-cerebral-ischemia-induced-blood-brain-barrier-dysfunction-by-suppressing-txnip-nlrp3-inflammasome-activation-and-the-mapk-pathway
#9
Guosheng Cao, Nan Jiang, Yang Hu, Yuanyuan Zhang, Guangyun Wang, Mingzhu Yin, Xiaonan Ma, Kecheng Zhou, Jin Qi, Boyang Yu, Junping Kou
Ruscogenin, an important steroid sapogenin derived from Ophiopogon japonicus, has been shown to inhibit cerebral ischemic injury. However, its potential molecular action on blood-brain barrier (BBB) dysfunction after stroke remains unclear. This study aimed to investigate the effects of ruscogenin on BBB dysfunction and the underlying mechanisms in middle cerebral artery occlusion/reperfusion (MCAO/R)-injured mice and oxygen-glucose deprivation/reoxygenation (OGD/R)-injured mouse brain microvascular endothelial cells (bEnd...
2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27522260/astilbin-improves-potassium-oxonate-induced-hyperuricemia-and-kidney-injury-through-regulating-oxidative-stress-and-inflammation-response-in-mice
#10
Ming Wang, Jing Zhao, Nan Zhang, Jianghua Chen
Astilbin is a flavonoid compound derived from the rhizome of Smilax china L. The effects and possible molecular mechanisms of astilbin on potassium oxonate-induced hyperuricemia mice were investigated in this study. Different dosages of astilbin (5, 10, and 20mg/kg) were administered to induce hyperuricemic mice. The results demonstrated that the serum uric acid (Sur) level was significantly decreased by increasing the urinary uric acid (Uur) level and fractional excretion of urate (FEUA) with astilbin, related with suppressing role in meditation of Glucose transporter 9 (GLUT9), Human urate transporter 1 (URAT1) expression and up-regulation of ABCG2, Organic anion transporter 1/3 (OAT1/3) and Organic cation transporter 1 (OCT1)...
August 11, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27518105/consequences-of-a-maternal-high-fat-diet-and-late-gestation-diabetes-on-the-developing-rat-lung
#11
Michelle L Baack, Benjamin J Forred, Tricia D Larsen, Danielle N Jensen, Angela L Wachal, Muhammad Ali Khan, Peter F Vitiello
RATIONALE: Infants born to diabetic or obese mothers are at risk of respiratory distress and persistent pulmonary hypertension of the newborn (PPHN), conceivably through fuel-mediated pathogenic mechanisms. Prior research and preventative measures focus on controlling maternal hyperglycemia, but growing evidence suggests a role for additional circulating fuels including lipids. Little is known about the individual or additive effects of a maternal high-fat diet on fetal lung development...
2016: PloS One
https://www.readbyqxmd.com/read/27345365/new-insights-into-salvianolic-acid-a-action-regulation-of-the-txnip-nlrp3-and-txnip-chrebp-pathways-ameliorates-hfd-induced-nafld-in-rats
#12
Chunchun Ding, Yan Zhao, Xue Shi, Ning Zhang, Guo Zu, Zhenlu Li, Junjun Zhou, Dongyan Gao, Li Lv, Xiaofeng Tian, Jihong Yao
Salvianolic acid A (SalA), one of the most efficacious polyphenol compounds extracted from Radix Salvia miltiorrhiza (Danshen), has been shown to possess many potential pharmacological activities. This study aimed to investigate whether SalA has hepatoprotective effects against high-fat diet (HFD)-induced non-alcoholic fatty liver disease (NAFLD) and to further explore the mechanism underlying this process. SalA treatment significantly attenuated HFD-induced obesity and liver injury, and markedly decreased lipid accumulation in HFD-fed rat livers...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27266851/cepharanthine-and-piperine-ameliorate-diabetic-nephropathy-in-rats-role-of-nf-%C3%AE%C2%BAb-and-nlrp3-inflammasome
#13
Yara A Samra, Heba S Said, Nehal M Elsherbiny, Gregory I Liou, Mamdouh M El-Shishtawy, Laila A Eissa
AIMS: Hyperglycemia leads to elevation of oxidative stress and proinflammatory cytokines which are the main causes of diabetic nephropathy (DN). NLRP3 inflammasome and thioredoxin-interacting protein (TXNIP) are recently assumed to participate in the development of DN. We aimed to investigate the effects of Cepharanthine (CEP), Piperine (Pip) and their combination in streptozotocin (STZ)-induced DN focusing on their role to modulate NLRP3 and TXNIP induced inflammation. MAIN METHODS: Diabetic rats were treated with intraperitoneal (i...
July 15, 2016: Life Sciences
https://www.readbyqxmd.com/read/27224916/chrebp-promotes-the-differentiation-of-leukemia-initiating-cells-to-inhibit-leukemogenesis-through-the-txnip-runx1-pathways
#14
Hongxiang Zeng, Hao Gu, Chiqi Chen, Minle Li, Fangzhen Xia, Li Xie, Xiaoye Liu, Feifei Zhang, Xuemei Tong, Jiangbo Wang, Zhuo Yu, Junke Zheng
Targeting leukemia-initiating cells (LICs) is the key to eradicating leukemia and preventing its relapse. Recent studies have indicated that metabolic regulation may play a critical role in the maintenance of stemness in LICs, although the detailed mechanisms are poorly understood. Herein, we provide intriguing evidence showing that a glucose-responsive transcription factor, carbohydrate responsive element binding protein (ChREBP), served as a tumor suppressor rather than an oncogene, as previously described, to inhibit the development of acute myeloid leukemia by promoting the differentiation of LICs...
June 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/27148772/dna-methylation-of-loci-within-abcg1-and-phospho1-in-blood-dna-is-associated-with-future-type-2-diabetes-risk
#15
Tasnim Dayeh, Tiinamaija Tuomi, Peter Almgren, Alexander Perfilyev, Per-Anders Jansson, Vanessa D de Mello, Jussi Pihlajamäki, Allan Vaag, Leif Groop, Emma Nilsson, Charlotte Ling
Identification of subjects with a high risk of developing type 2 diabetes (T2D) is fundamental for prevention of the disease. Consequently, it is essential to search for new biomarkers that can improve the prediction of T2D. The aim of this study was to examine whether 5 DNA methylation loci in blood DNA (ABCG1, PHOSPHO1, SOCS3, SREBF1, and TXNIP), recently reported to be associated with T2D, might predict future T2D in subjects from the Botnia prospective study. We also tested if these CpG sites exhibit altered DNA methylation in human pancreatic islets, liver, adipose tissue, and skeletal muscle from diabetic vs...
July 2, 2016: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/27118398/suppression-of-redd1-in-osteoarthritis-cartilage-a-novel-mechanism-for-dysregulated-mtor-signaling-and-defective-autophagy
#16
O Alvarez-Garcia, M Olmer, R Akagi, Y Akasaki, K M Fisch, T Shen, A I Su, M K Lotz
OBJECTIVE: Aging is a main risk factor for the development of osteoarthritis (OA) and the molecular mechanisms underlying the aging-related changes in articular cartilage include increased mammalian target of rapamycin (mTOR) signaling and defective autophagy. REDD1 is an endogenous inhibitor of mTOR that regulates cellular stress responses. In this study we measured REDD1 expression in normal, aged and OA cartilage and assessed REDD1 function in human and mouse articular chondrocytes...
September 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27078703/telmisartan-ameliorates-oxidative-stress-and-subarachnoid-haemorrhage-induced-cerebral-vasospasm
#17
Fatih Erdi, Fatih Keskin, Hasan Esen, Bulent Kaya, Bahadir Feyzioglu, Ibrahim Kilinc, Yasar Karatas, Gokhan Cuce, Erdal Kalkan
OBJECTIVES: Growing evidence suggests that oxidative stress is one of the factors contributing to subarachnoid haemorrhage (SAH)-induced cerebral vasospasm. SAH-induced cerebral vasospam alters thioredoxin (Trx) cycle enzymes and thioredoxin-interacting protein (TXNIP) as an important endogenous antioxidant system. In this study, we have explored the effects of telmisartan on the vascular morphological changes, endothelial apoptosis, tissue oxidative stress status and the level of Trx cycle enzymes/ TXNIP in a rabbit SAH model...
March 2016: Neurological Research
https://www.readbyqxmd.com/read/26983463/fbw7-f-box-and-wd-repeat-domain-containing-7-negatively-regulates-glucose-metabolism-by-targeting-the-c-myc-txnip-thioredoxin-binding-protein-axis-in-pancreatic-cancer
#18
Shunrong Ji, Yi Qin, Chen Liang, Run Huang, Si Shi, Jiang Liu, Kaizhou Jin, Dingkong Liang, Wenyan Xu, Bo Zhang, Liang Liu, Chen Liu, Jin Xu, Quanxing Ni, Paul J Chiao, Min Li, Xianjun Yu
PURPOSE: FBW7 functions as a tumor suppressor by targeting oncoproteins for destruction. We previously reported that the oncogenic mutation of KRAS inhibits the tumor suppressor FBW7 via the Ras-Raf-MEK-ERK pathway, which facilitates the proliferation and survival of pancreatic cancer cells. However, the underlying mechanism by which FBW7 suppresses pancreatic cancer remains unexplored. Here, we sought to elucidate the function of FBW7 in pancreatic cancer glucose metabolism and malignancy...
August 1, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/26934991/microrna-20a-negatively-regulates-expression-of-nlrp3-inflammasome-by-targeting-txnip-in-adjuvant-induced-arthritis-fibroblast-like-synoviocytes
#19
Xiao-Feng Li, Wen-Wen Shen, Ying-Yin Sun, Wan-Xia Li, Zheng-Hao Sun, Yan-Hui Liu, Lei Zhang, Cheng Huang, Xiao-Ming Meng, Jun Li
OBJECTIVES: Rheumatoid arthritis (RA) is a heterogenic and systemic autoimmune disease characterized by synovitis and joint structural damage. However, the pathogenesis of RA is still obscure. It has been reported microRNA-20a (miRNA-20a) was significantly associated with the regulation of pro-inflammatory cytokines release in RA FLS. The purpose of this study was to explore the function and underlying mechanisms of miRNA-20a on NLRP3-inflammasome in adjuvant-induced arthritis (AA) fibroblast-like synoviocytes (FLSs) in vitro...
February 26, 2016: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/26829886/d-allose-inhibits-cancer-cell-growth-by-reducing-glut1-expression
#20
Chisato Noguchi, Kazuyo Kamitori, Akram Hossain, Hiroshi Hoshikawa, Ayako Katagi, Youyi Dong, Li Sui, Masaaki Tokuda, Fuminori Yamaguchi
Glucose is a major energy source for mammalian cells and is transported into cells via cell-specific expression of various glucose transporters (GLUTs). Especially, cancer cells require massive amounts of glucose as an energy source for their dysregulated growth and thus over-express GLUTs. d-allose, a C-3 epimer of d-glucose, is one of rare sugars that exist in small quantities in nature. We have shown that d-allose induces the tumor suppressor gene coding for thioredoxin interacting protein (TXNIP) and inhibits cancer cell growth by G1 cell cycle arrest...
2016: Tohoku Journal of Experimental Medicine
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