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https://www.readbyqxmd.com/read/27924803/gsk-3beta-inhibitor-induces-expression-of-nrf2-trxr2-signaling-pathway-to-protect-against-renal-ischemia-reperfusion-injury-in-diabetic-rats
#1
Bo Hu, Yuhong Wu, Jie Liu, Xiaohua Shen, Fei Tong, Guangtao Xu, Ruilin Shen
BACKGROUND/AIMS: Diabetes mellitus (DM) can lead to renal damage and dysfunction, and exacerbate renal ischemia/reperfusion injury (RI/RI). The aim of this study was to investigate the protective effect of GSK-3β inhibitor TDZD-8 against RI/RI through Nrf2/TrxR2 signaling pathway in a rat DM model. METHODS: A DM rat model was established by a single injection of streptozocin. Diabetic rats were pretreated with TDZD-8 (1 mg/kg bw) or TDZD-8+auranofin (10 nmol/L, 5ml/kg bw), and then subjected to 45-min ischemia and 24-h reperfusion...
December 8, 2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27924507/tppu-protects-tau-from-h2o2-induced-hyperphosphorylation-in-hek293-tau-cells-by-regulating-pi3k-akt-gsk-3%C3%AE-pathway
#2
En-Sheng Yao, Yan Tang, Xing-Hua Liu, Ming-Huan Wang
Neurofibrillary pathology of abnormally hyperphosphorylated tau is a hallmark of Alzheimer's disease (AD) and other tauopathies. Phosphatidylinositol 3-kinase (PI3K)/Akt/glycogen synthase kinase-3 beta (GSK-3β) signaling pathway is pivotal for tau phosphorylation. Inhibition of soluble epoxide hydrolase (sEH) metabolism has been shown to effectively increase the accumulation of epoxyeicosatrienoic acids (EETs), which are cytochrome P450 metabolites of arachidonic acid and have been demonstrated to have neuroprotective effects...
December 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/27913571/snord126-promotes-hcc-and-crc-cell-growth-by-activating-the-pi3k-akt-pathway-through-fgfr2
#3
Xianlong Fang, Dongmei Yang, Hongping Luo, Shuai Wu, Wenjie Dong, Jing Xiao, Sujing Yuan, Aimin Ni, Kang-Jian Zhang, Xin-Yuan Liu, Liang Chu
Small nucleolar RNA (snoRNA) dysfunctions have been associated with cancer development. SNORD126 is an orphan C/D box snoRNA that is encoded within introns 5-6 of its host gene, cyclin B1-interacting protein 1 (CCNB1IP1) The cancer-associated molecular mechanisms triggered by SNORD126 are not fully understood. Here, we demonstrate that SNORD126 is highly expressed in hepatocellular carcinoma (HCC) and colorectal cancer (CRC) patient samples. SNORD126 increased Huh-7 and SW480 cell growth and tumorigenicity in nude mice...
December 2, 2016: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/27911267/oncogenic-secretory-clusterin-in-hepatocellular-carcinoma-expression-at-early-staging-and-emerging-molecular-target
#4
Wenjie Zheng, Min Yao, Qi Qian, Wenli Sai, Liwei Qiu, Junling Yang, Wei Wu, Zhizhen Dong, Dengfu Yao
Secretory clusterin (sCLU) is associated with hepatocellular carcinoma (HCC) progression by contributing to angiogenesis, chemoresistance, cell survival, and metastasis. However, the sCLU expression at early stage of HCC progression remains to be clarified. In this study, the alteration of sCLU oncogenicity was firstly evaluated in HCC- and their para-cancerous- tissues. The incidence of sCLU expression in HCC was significantly higher than that in their non-tumorous tissues at message RNA (mRNA) or protein level, gradually increasing with tumor-node-metastasis (TNM) staging...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27908414/licl-regulates-mitochondrial-biogenesis-during-megakaryocyte-development
#5
Ram Babu Undi, Usha Gutti, Ravi Kumar Gutti
JAK-STAT, PI3K-AKT and MAPK signaling pathways are involved in platelet production process. Although wnt signaling has been reported in the biogenesis of platelets, but its role in megakaryocyte development is not well studied. We used an inducible canonical wnt signaling system that utilizes LiCl (GSK-3β inhibitor). LiCl could activate wnt signaling pathway along with maturation of megakaryocytes. Mitochondrial staining showed an increase in mitochondrial mass upon induction with LiCl. Also, mitochondrial markers PGC-1α and TFAM were up regulated with increase in mitochondrial DNA content...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27907035/exendin-4-inhibits-hepatic-lipogenesis-by-increasing-%C3%AE-catenin-signaling
#6
Mi Hae Seo, Jinmi Lee, Seok-Woo Hong, Eun-Jung Rhee, Se Eun Park, Cheol Young Park, Ki Won Oh, Sung Woo Park, Won-Young Lee
The aim of this study is to investigate whether the beneficial effect of exendin-4 on hepatic steatosis is mediated by β-catenin signaling. After the HepG2 human hepatoma cells were treated with PA for 24 hours, total triglycerides levels were increased in a dose-dependent manner, and the expression levels of perilipin family members were upregulated in cells treated with 400 μM PA. For our in vitro model of hepatic steatosis, HepG2 cells were treated with 400 μM palmitic acid (PA) in the presence or absence of 100 nM exendin-4 for 24 hours...
2016: PloS One
https://www.readbyqxmd.com/read/27904695/overexpression-of-akip1-predicts-poor-prognosis-of-patients-with-breast-carcinoma-and-promotes-cancer-metastasis-through-akt-gsk-3%C3%AE-snail-pathway
#7
Dan Mo, Xinning Li, Chunhong Li, Junrong Liang, Tian Zeng, Naiwei Su, Qipei Jiang, Jingjing Huang
Recent evidence has demonstrated that A kinase interacting protein 1 (AKIP1), a molecular regulator of protein kinase A, was overexpressed in breast cancer. However, the prognostic and biological role of AKIP1 in breast cancer is still elusive. The purpose of our study was to elucidate the role and molecular mechanism of AKIP1 in breast cancer development. The mRNA levels of AKIP1 in breast cancer and paired normal breast tissues were examined by quantitative real-time PCR. The relationship of AKIP1 expression with clinicopathological characteristics and clinical prognosis of breast cancer patients was investigated...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27904664/tauroursodeoxycholic-acid-inhibits-endoplasmic-reticulum-stress-blocks-mitochondrial-permeability-transition-pore-opening-and-suppresses-reperfusion-injury-through-gsk-3%C3%A3-in-cardiac-h9c2-cells
#8
Yuxi Xie, Yonggui He, Zhiliang Cai, Jianhang Cai, Mengyao Xi, Yidong Zhang, Jinkun Xi
This study investigates whether inhibition of endoplasmic reticulum (ER) stress prevents opening of the mitochondrial permeability transition pore (mPTP) and evaluates the corresponding signaling pathways involved in this process. Exposure of cardiac H9c2 cells to 800 µM H2O2 for 20 min opened mPTP in response to oxidative stress, as demonstrated by quenching of tetramethylrhodamine ethyl ester (TMRE) fluorescence. Oxidative stress-induced mPTP opening was rescued by the ER stress inhibitor tauroursodeoxycholic acid (TUDCA) in a dose-dependent manner at low concentrations...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27902447/a-unique-type-of-gsk-3-inhibitor-brings-new-opportunities-to-the-clinic
#9
Avital Licht-Murava, Rom Paz, Lilach Vaks, Limor Avrahami, Batya Plotkin, Miriam Eisenstein, Hagit Eldar-Finkelman
Development of protein kinase inhibitors is a focus of many drug discovery programs. A major problem, however, is the limited specificity of the commonly used adenosine triphosphate-competitive inhibitors and the weak inhibition of the more selective substrate-competitive inhibitors. Glycogen synthase kinase-3 (GSK-3) is a promising drug target for treating neurodegenerative disorders, including Alzheimer's disease (AD), but most GSK-3 inhibitors have not reached the clinic. We describe a new type of GSK-3 inhibitor, L807mts, that acts through a substrate-to-inhibitor conversion mechanism that occurs within the catalytic site of the enzyme...
November 15, 2016: Science Signaling
https://www.readbyqxmd.com/read/27902446/science-signaling-podcast-for-15-november-2016-a-new-type-of-kinase-inhibitor
#10
Hagit Eldar-Finkelman, Annalisa M VanHook
This Podcast features an interview with Hagit Eldar-Finkelman, author of a Research Article that appears in the 15 November 2016 issue of Science Signaling, about a newly developed inhibitor of glycogen synthase kinase 3 (GSK-3). GSK-3 participates in several signaling networks and has been implicated in various pathologies, including neurodegenerative diseases, cognitive impairments, and cancer. Licht-Murava et al developed L807mts, a substrate-competitive peptide inhibitor that blocks GSK-3 activity through an unusual mechanism...
November 15, 2016: Science Signaling
https://www.readbyqxmd.com/read/27901086/glycycoumarin-inhibits-hepatocyte-lipoapoptosis-through-activation-of-autophagy-and-inhibition-of-er-stress-gsk-3-mediated-mitochondrial-pathway
#11
Enxiang Zhang, Shutao Yin, Xinhua Song, Lihong Fan, Hongbo Hu
Herbal medicine as an alternative approach in the treatment of disease has drawn growing attention. Identification of the active ingredient is needed for effective utilization of the herbal medicine. Licorice is a popular herbal plant that is widely used to treat various diseases including liver diseases. Glycycoumarin (GCM) is a representative of courmarin compounds isolated from licorice. In the present study, the protective effect of GCM on hepatocyte lipoapoptosis has been evaluated using both cell culture model of palmitate-induced lipoapoptosis and animal model of non-alcoholic steatohepatitis (NASH)...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900801/gsk-3-a-key-regulatory-target-for-ketamine-s-rapid-antidepressant-effects-mediated-by-enhanced-ampa-to-nmda%C3%A2-throughput
#12
Carlos A Zarate, Rodrigo Machado-Vieira
No abstract text is available yet for this article.
November 29, 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27900040/triptolide-exerts-pro-apoptotic-and-cell-cycle-arrest-activity-on-drug-resistant-human-lung-cancer-a549-taxol-cells-via-modulation-of-mapk-and-pi3k-akt-signaling-pathways
#13
Chen Qiong Xie, Ping Zhou, Jian Zuo, Xiang Li, Yong Chen, Jian Wei Chen
Multidrug resistance (MDR) is a major obstacle in the effective chemotherapeutic treatment of cancers. Triptolide (TPL) is a diterpenoid isolated from Tripterygium wilfordii Hook. f., a traditional Chinese medicine. It was demonstrated in our previous study that TPL exerts anti-MDR cancers on various MDR cell lines (including A549/Taxol, MCF-7/ADR and Bel7402/5-Fu). The present study was designed to investigate its anti-proliferative activity on A549/Taxol cells, and explore the underlying mechanism of action...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27897419/exercise-restores-muscle-stem-cell-mobilization-regenerative-capacity-and-muscle-metabolic-alterations-via-adiponectin-adipor1-activation-in-samp10-mice
#14
Aiko Inoue, Xian Wu Cheng, Zhe Huang, Lina Hu, Ryosuke Kikuchi, Haiying Jiang, Limei Piao, Takeshi Sasaki, Kohji Itakura, Hongxian Wu, Guangxian Zhao, Yanna Lei, Guang Yang, Enbo Zhu, Xiang Li, Kohji Sato, Teruhiko Koike, Masafumi Kuzuya
BACKGROUND: Exercise train (ET) stimulates muscle response in pathological conditions, including aging. The molecular mechanisms by which exercise improves impaired adiponectin/adiponectin receptor 1 (AdipoR1)-related muscle actions associated with aging are poorly understood. Here we observed that in a senescence-accelerated mouse prone 10 (SAMP10) model, long-term ET modulated muscle-regenerative actions. METHODS: 25-week-old male SAMP10 mice were randomly assigned to the control and the ET (45 min/time, 3/week) groups for 4 months...
November 29, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27894919/resveratrol-attenuates-mpp-induced-mitochondrial-dysfunction-and-cell-apoptosis-via-akt-gsk-3%C3%AE-pathway-in-sn4741-cells
#15
Weijun Zeng, Wei Zhang, Fangfang Lu, Li Gao, Guodong Gao
Oxidative stress and mitochondrial dysfunction play crucial role in the dopaminergic neurons death, which is the pathological feature of Parkinson's disease (PD). Resveratrol (Res), a polyphenol derived from grapes and blueberries, has been reported to reduce oxidative stress injury and to restore mitochondrial function. In this study, we aimed to explore the underlying molecular mechanism of the beneficial effects of Res against MPP+- induced mitochondrial dysfunction and cell apoptosis in SN4741 cells. The data showed that Res significantly alleviated MPP+- induce cytotoxicity and restored MPP+- induced mitochondrial dysfunction in SN4741 cells...
November 26, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27894721/vaccination-against-hepatitis-b-virus-among-people-who-inject-drugs-a-20year-experience-from-a-swedish-needle-exchange-program
#16
M Alanko Blomé, P Björkman, L Flamholc, H Jacobsson, A Widell
BACKGROUND: People who inject drugs (PWID) are at particular risk of hepatitis B virus (HBV) acquisition, but often have poor access or adherence to HBV vaccination. Vaccination against HBV has been offered at a major Swedish needle exchange program (NEP) since 1994. The aim of this study was to evaluate vaccine completion and response rates, and the effect of sequential booster doses to non-responders to the standard vaccination schedule. METHODS: PWID enrolled in the NEP 1994-2013, without serological markers for HBV at baseline (negative for HBsAg/anti-HBc/anti-HBs), were offered a three-dose standard intramuscular vaccination schedule (Engerix®-B, GSK, 20μg/mL, intended to be received at months 0, 1 and 6)...
November 25, 2016: Vaccine
https://www.readbyqxmd.com/read/27891591/nor1-suppresses-cancer-stem-like-cells-properties-of-tumor-cells-via-the-inhibition-of-the-akt-gsk-3%C3%AE-wnt-%C3%AE-catenin-aldh1a1-signal-circuit
#17
Wei Wang, Mei Yi, Shengnan Chen, Junjun Li, Haijing Zhang, Wei Xiong, Guiyuan Li, Xiaoling Li, Bo Xiang
Cancer stem cells (CSCs) play a key role in tumor radiotherapy and chemotherapy resistance, relapse, and metastasis, and are primarily maintained in a resting state in vivo. The failure of conventional therapies to target CSCs is the main cause of treatment failure. The discovery of CSCs in nasopharyngeal carcinoma (NPC) tumors is becoming more prevalent; however, the understanding of the mechanisms underlying the maintenance of tumor stemness is still limited. We previously cloned NOR1, a tumor suppressor gene downregulated in NPC cell lines and tissues...
November 27, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27890752/delayed-development-of-aneurysms-following-gamma-knife-surgery-for-trigeminal-neuralgia-report-of-2-cases
#18
Hiroki Uchikawa, Toru Nishi, Yasuyuki Kaku, Tomoaki Goto, Jun-Ichi Kuratsu, Shigetoshi Yano
BACKGROUND: Delayed development of intracranial aneurysms is an extremely rare complication of gamma knife surgery (GKS), and so far only 6 cases have been reported. Furthermore, there are no reported cases after GKS for trigeminal neuralgia (TN). Of the above cases, none referred to the natural history or pathophysiology of GKS-related intracranial aneurysm formation. CASE DESCRIPTION: We treated 2 patients who suffered subarachnoid hemorrhage (SAH) due to ruptures of intracranial aneurysms that developed long after GKS...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27889234/in-silico-and-in-vitro-anti-cancer-potential-of-a-curcumin-analogue-1e-6e-1-7-di-1h-indol-3-yl-hepta-1-6-diene-3-5-dione
#19
Shamim Akhtar Sufi, Lakshmi Narayana Adigopula, Safiulla Basha Syed, Victor Mukherjee, Mohane S Coumar, H Surya Prakash Rao, Rukkumani Rajagopalan
PURPOSE: Previously we showed that BDMC, an analogue of curcumin suppresses growth of human breast and laryngeal cancer cell line by causing apoptosis. Here, we demonstrate the enhanced anti-cancer activity of a heterocyclic ring (indole) incorporated curcumin analogue ((1E, 6E)-1, 7-di (1H-indol-3-yl) hepta-1, 6-diene-3, 5-Dione), ICA in short, in comparison to curcumin. METHOD: ICA was synthesized by a one pot condensation reaction. Anti-cancer potential of ICA was assessed in three human cancer cell lines of different origin (Lung adenocarcinoma (A549), leukemia (K562) and colon cancer (SW480)) by MTT assay...
November 23, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27888450/effects-of-chromium-loaded-chitosan-nanoparticles-on-glucose-transporter-4-relevant-mrna-and-proteins-of-phosphatidylinositol-3-kinase-akt2-kinase-and-amp-activated-protein-kinase-of-skeletal-muscles-in-finishing-pigs
#20
Lujie Liu, Bin Wang, Yudan He, Wenjing Tao, Zixun Liu, Minqi Wang
The study was conducted to evaluate the effects of chromium-loaded chitosan nanoparticles (Cr-CNP) on glucose transporter 4 (GLUT4), relevant messenger RNA (mRNA), and proteins involved in phosphatidylinositol 3-kinase (PI3K), Akt2-kinase, and AMP-activated protein kinase (AMPK) of skeletal muscles in finishing pigs. A total of 120 crossbred barrows (BW 65.00 ± 1.26 kg) were randomly allotted to four dietary treatments, with three pens per treatment and 10 pigs per pen. Pigs were fed the basal diet supplemented with 0, 100, 200, or 400 μg/kg of Cr from Cr-CNP for 35 days...
November 25, 2016: Biological Trace Element Research
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