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https://www.readbyqxmd.com/read/28323970/obesity-modulates-inflammation-and-lipid-metabolism-oocyte-gene-expression-a-single-cell-transcriptome-perspective
#1
Meghan L Ruebel, Matthew Cotter, Clark R Sims, Dean M Moutos, Thomas M Badger, Mario A Cleves, Kartik Shankar, Aline Andres
Context: It is hypothesized that obesity adversely affects the ovarian environment which can disrupt oocyte maturation and may further impact embryonic development. Objective: This study aimed to compare oocyte gene expression profiles and follicular fluid (FF) content from overweight/obese (OW) women and normal weight (NW) women who were undergoing fertility treatments. Design: Using single cell transcriptomic analyses, we investigated oocyte gene expression using RNA-seq...
March 15, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28285192/xanthohumol-ameliorates-lipopolysaccharide-lps-induced-acute-lung-injury-via-induction-of-ampk-gsk3%C3%AE-nrf2-signal-axis
#2
Hongming Lv, Qinmei Liu, Zhongmei Wen, Haihua Feng, Xuming Deng, Xinxin Ci
Abundant natural flavonoids can induce nuclear factor-erythroid 2 related factor 2 (Nrf2) and/or AMP-activated protein kinase (AMPK) activation, which play crucial roles in the amelioration of various inflammation- and oxidative stress-induced diseases, including acute lung injury (ALI). Xanthohumol (Xn), a principal prenylflavonoid, possesses anti-inflammation and anti-oxidant activities. However, whether Xn could protect from LPS-induced ALI through inducing AMPK/Nrf2 activation and its downstream signals, are still poorly elucidated...
March 2, 2017: Redox Biology
https://www.readbyqxmd.com/read/28281242/regulation-of-a-kinase-anchoring-protein-12-by-heat-shock-protein-a12b-to-prevent-ventricular-dysfunction-following-acute-myocardial-infarction-in-diabetic-rats
#3
Vaithinathan Selvaraju, Sumanth C Suresh, Mahesh Thirunavukkarasu, Jayakanthan Mannu, Jocelyn L C Foye, Premendu P Mathur, J Alexander Palesty, Juan A Sanchez, David W McFadden, Nilanjana Maulik
We examined the effects of overexpressing HSPA12B on angiogenesis and myocardial function by intramyocardial administration of adenovirus encoding HSPA12B (Ad. HSPA12B) in a streptozotocin-induced diabetic rat subjected to myocardial infarction. Rats were divided randomly into six groups: control sham (CS) + Ad.LacZ, control myocardial infarction (CMI) + Ad.LacZ, control MI + Ad.HSPA12B, diabetic sham (DS) + Ad.LacZ, diabetic MI + Ad.LacZ and diabetic MI + Ad.HSPA12B. Following MI or sham surgery, the respective groups received either Ad...
March 9, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28137209/txnip-in-metabolic-regulation-physiological-role-and-therapeutic-outlook
#4
Naif Mohammad Alhawiti, Saeed Almahri, Mohammad Azhar Aziz, Shuja Shafi Malik, Sameer Mohammad
Thioredoxin-interacting protein (TXNIP) also known as thioredoxin binding protein-2 is a ubiquitously expressed protein that interacts and negatively regulates expression and function of Thioredoxin (TXN). Over the last few years TXNIP has attracted considerable attention due to its wide-ranging functions impacting several aspects of energy metabolism. TXNIP acts as an important regulator of glucose and lipid metabolism through pleiotropic actions including regulation of β-cell function, hepatic glucose production, peripheral glucose uptake, adipogenesis, and substrate utilization...
January 30, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28099758/melatonin-alleviates-cadmium-induced-liver-injury-by-inhibiting-the-txnip-nlrp3-inflammasome
#5
Zhengwang Cao, Yiliang Fang, Yonghui Lu, Dunxian Tan, Changhong Du, Yuming Li, Qinlong Ma, Junmei Yu, Mengyan Chen, Chao Zhou, Liping Pei, Lei Zhang, Haiying Ran, Mindi He, Zhengping Yu, Zhou Zhou
Cadmium (Cd) is a persistent environmental and occupational contaminant that accumulates in the liver and induces oxidative stress and inflammation. Melatonin possesses potent hepatoprotective properties against the development and progression of acute and chronic liver injury. Nevertheless, the molecular mechanism underlying the protective effects of melatonin against Cd-induced hepatotoxicity remains obscure. In this study, we aimed to investigate the effects of melatonin on Cd-induced liver inflammation and hepatocyte death...
January 18, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28070626/nuclear-receptors-regulate-lipid-metabolism-and-oxidative-stress-markers-in-chondrocytes
#6
Anusha Ratneswaran, Margaret Man-Ger Sun, Holly Dupuis, Cynthia Sawyez, Nica Borradaile, Frank Beier
Joint homeostasis failure can result in osteoarthritis (OA). Currently, there are no treatments to alter disease progression in OA, but targeting early changes in cellular behavior has great potential. Recent data show that nuclear receptors contribute to the pathogenesis of OA and could be viable therapeutic targets, but their molecular mechanisms in cartilage are incompletely understood. This study examines global changes in gene expression after treatment with agonists for four nuclear receptor implicated in OA (LXR, PPARδ, PPARγ, and RXR)...
January 9, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28068647/berberine-an-isoquinoline-alkaloid-suppresses-txnip-mediated-nlrp3-inflammasome-activation-in-msu-crystal-stimulated-raw-264-7-macrophages-through-the-upregulation-of-nrf2-transcription-factor-and-alleviates-msu-crystal-induced-inflammation-in-rats
#7
Palani Dinesh, MahaboobKhan Rasool
The current study was designed to investigate the therapeutic potential of berberine on monosodium urate (MSU) crystal stimulated RAW 264.7 macrophages and in MSU crystal induced rats. Our results indicate that berberine (25, 50 and 75μM) suppressed the levels of pro-inflammatory cytokines (interleukin-1beta (IL-1β) and tumor necrosis factor alpha (TNFα)) and intracellular reactive oxygen species in MSU crystal stimulated RAW 264.7 macrophages. The mRNA expression levels of IL-1β, caspase 1, nucleotide-binding oligomerization domain-like receptor pyrin domain containing 3 (NLRP3), thioredoxin interacting protein (TXNIP) and kelch-like ECH-associated protein 1 (Keap1) were found downregulated with the upregulation of nuclear factor erythroid-2-related factor 2 (Nrf2) transcription factor and its associated anti-oxidant enzymes: Heme oxygenase I (HO-1), superoxide dismutase (SOD1), glutathione peroxidase (GPx), NADPH quinone oxidoreductase-1 (NQO1) and catalase (CAT) in MSU crystal stimulated RAW 264...
January 6, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28025459/tgp-attenuates-endoplasmic-reticulum-stress-and-regulates-the-expression-of-thioredoxin-interacting-protein-in-the-kidneys-of-diabetic-rats
#8
Yunxia Shao, Xiangming Qi, Xinxing Xu, Kun Wang, Yonggui Wu, Lingling Xia
Recent evidence suggests that the endoplasmic reticulum stress (ERS)-thioredoxin-interacting protein (TXNIP)-inflammation chain contributes to diabetic renal injury. The aim of the current study was to investigate whether total glucosides of peony (TGP) could inhibit ERS and attenuate up-regulation of TXNIP in the kidneys of rats with streptozotocin-induced diabetes. TGP was orally administered daily at a dose of 50, 100, or 200 mg/kg for 8 weeks. The expression of glucose-regulated protein 78 (GRP78), phospho-protein kinase RNA-like ER kinase (p-PERK), phosphor- eukaryotic translation initiation factor 2α (p-eIF2α), C/EBP-homologous protein (CHOP), and TXNIP was assessed...
January 16, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/27989964/histone-acetylation-of-glucose-induced-thioredoxin-interacting-protein-gene-expression-in-pancreatic-islets
#9
Pradeep Bompada, David Atac, Cheng Luan, Robin Andersson, Judit Domènech Omella, Emilia Ottosson Laakso, Jason Wright, Leif Groop, Yang De Marinis
Thioredoxin-interacting protein (TXNIP) has been shown to be associated with glucose-induced deterioration of pancreatic beta cell function in diabetes. However, whether epigenetic mechanisms contribute to the regulation of TXNIP gene expression by glucose is not clear. Here we studied how glucose exerts its effect on TXNIP gene expression via modulation of histone acetylation marks. To achieve this, we applied clustered regularly interspaced short palindromic repeats/Cas9 (CRISPR/Cas9) to knock out histone acetyltransferase (HAT) p300 in a rat pancreatic beta cell line INS1 832/13...
December 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27936392/rutin-protects-endothelial-dysfunction-by-disturbing-nox4-and-ros-sensitive-nlrp3-inflammasome
#10
Wei Wang, Qiu-Hong Wu, Yong Sui, Yan Wang, Xin Qiu
High glucose induced endothelial dysfunction is blamed for initiation of vascular complication in Type 2 diabetes mellitus. Rutin has been described in possessing comprehensive pharmacological activities, but the mechanism involved in endothelial protection through regulating oxidative stress and damage is still ambiguous. In the present study, rutin was evaluated in high glucose stimulated human umbilical vein endothelial cells (HUVECs) and high glucose diet-treated SD rats were applied to explored the molecular mechanism in rutin counteracting oxidative stress and damage...
February 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27929088/thioredoxin-interacting-protein-regulates-haematopoietic-stem-cell-ageing-and-rejuvenation-by-inhibiting-p38-kinase-activity
#11
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
#12
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...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27832995/protective-effect-of-sophoraflavanone-g-on-streptozotocin-stz-induced-inflammation-in-diabetic-rats
#13
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)...
December 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
#14
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
#15
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
#16
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...
January 2017: 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
#17
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
#18
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
#19
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...
August 29, 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
#20
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)...
October 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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