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https://www.readbyqxmd.com/read/27919318/new-learning-while-consolidating-memory-during-sleep-is-actively-blocked-by-a-protein-synthesis-dependent-process
#1
Roi Levy, David Levitan, Abraham J Susswein
Brief experiences while a memory is consolidated may capture the consolidation, perhaps producing a maladaptive memory, or may interrupt the consolidation. Since consolidation occurs during sleep, even fleeting experiences when animals are awakened may produce maladaptive long-term memory, or may interrupt consolidation. In a learning paradigm affecting Aplysia feeding, when animals were trained after being awakened from sleep, interactions between new experiences and consolidation were prevented by blocking long-term memory arising from the new experiences...
December 6, 2016: ELife
https://www.readbyqxmd.com/read/27917474/germacrone-inhibits-adipogenesis-and-stimulates-lipolysis-via-the-amp-activated-protein-kinase-signalling-pathway-in-3t3-l1-preadipocytes
#2
Yuan-Ri Guo, Se-Young Choung
OBJECTIVES: In a previous study, we reported that Aster spathulifolius Maxim extract (ASE) inhibited lipid accumulation and adipocyte differentiation in 3T3-L1 cells. Of the components in ASE, germacrone (GM) was identified as a potent bioactive constituent. GM is known for its anticancer and antiviral activity. However, the effects of GM and the molecular mechanism by which GM regulates adipogenesis and lipolysis were not reported. Therefore, we investigated the effect of GM on adipogenesis and lipolysis and to elucidate its underlying molecular mechanism...
December 5, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27914529/agglutinin-isolated-from-arisema-heterophyllum-blume-induces-apoptosis-and-autophagy-in-a549-cells-through-inhibiting-pi3k-akt-pathway-and-inducing-er-stress
#3
Li-Xing Feng, Peng Sun, Tian Mi, Miao Liu, Wang Liu, Si Yao, Yi-Min Cao, Xiao-Lu Yu, Wan-Ying Wu, Bao-Hong Jiang, Min Yang, De-An Guo, Xuan Liu
Arisaema heterophyllum Blume is one of the three medicinal plants known as traditional Chinese medicine Rhizoma Arisaematis (RA). RA has been popularly used to treat patients with convulsions, inflammation, and cancer for a long time. However, the underlying mechanisms for RA effects are still unclear. The present study was designed to determine the cytotoxicity of agglutinin isolated from Arisema heterophyllum Blume (AHA) and explore the possible mechanisms in human non-small-cell lung cancer A549 cells. AHA with purity up to 95% was isolated and purified from Arisaema heterophyllum Blume using hydrophobic interaction chromatography...
November 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27909014/sodium-4-phenylbutyrate-attenuates-myocardial-reperfusion-injury-by-reducing-the-unfolded-protein-response
#4
Osamu Takatori, Soichiro Usui, Masaki Okajima, Shuichi Kaneko, Hiroshi Ootsuji, Shin-Ichiro Takashima, Daisuke Kobayashi, Hisayoshi Murai, Hiroshi Furusho, Masayuki Takamura
BACKGROUND: The unfolded protein response (UPR) plays a pivotal role in ischemia-reperfusion (I/R) injury in various organs such as heart, brain, and liver. Sodium 4-phenylbutyrate (PBA) reportedly acts as a chemical chaperone that reduces UPR. In the present study, we evaluated the effect of PBA on reducing the UPR and protecting against myocardial I/R injury in mice. METHODS: Male C57BL/6 mice were subjected to 30-minute myocardial I/R, and were treated with phosphate-buffered saline (as a vehicle) or PBA...
December 1, 2016: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27900814/effects-of-intratracheal-exposure-of-2-chloroethyl-ethyl-sulfide-cees-on-the-activation-of-ccaat-enhancer-binding-protein-c-ebp-and-its-protection-by-antioxidant-liposome
#5
Somdutta Sinha Roy, Shyamali Mukherjee, Salil K Das
Exposure of 2-chloroethyl ethyl sulfide (CEES) to guinea pigs causes lung injury by infiltration of neutrophils in interstitial lung spaces. A unique MAPK-regulated transcription factor, C/EBP (CCAAT-enhancer-binding protein), regulates the expression of intracellular adhesion molecule-1 (ICAM-1), involved in recruiting neutrophils in lung. The present study was to determine if CEES exposure causes activation of C/EBP, in particular the predominant β-isoform and if so whether it can be prevented by intratracheal delivery of an antioxidant liposome containing N-acetyl cysteine and tocopherols...
November 30, 2016: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/27895698/combinations-of-bio-active-dietary-constituents-affect-human-white-adipocyte-function-in-vitro
#6
Ines Warnke, Johan W E Jocken, Rotraut Schoop, Christine Toepfer, Regina Goralczyk, Joseph Schwager
BACKGROUND: Specific bio-active dietary compounds modulate numerous metabolic processes in adipose tissue (AT), including pre-adipocyte proliferation and differentiation. AT dysfunction, rather than an increased fat mass per se, is strongly associated with the development of insulin resistance and is characterized by impaired adipogenesis, hypertrophic adipocytes, inflammation, and impairments in substrate metabolism. A better understanding of mechanisms underlying AT dysfunction may provide new strategies for the treatment of obesity-associated metabolic diseases...
2016: Nutrition & Metabolism
https://www.readbyqxmd.com/read/27895089/oxidized-high-density-lipoprotein-induces-macrophage-apoptosis-via-toll-like-receptor-4-dependent-chop-pathway
#7
Shutong Yao, Hua Tian, Li Zhao, Jinguo Li, Libo Yang, Feng Yue, Yanyan Li, Peng Jiao, Nana Yang, Yiwei Wang, Xiangjian Zhang, Shucun Qin
Oxidized high-density lipoprotein (ox-HDL), unlike native HDL that exerts antiatherogenic effects, plays a proatherogenic role. However, the underlying mechanisms are not completely understood. This study was designed to explore the inductive effect of ox-HDL on endoplasmic reticulum (ER) stress-C/EBP homologous protein (CHOP)-mediated macrophage apoptosis and its upstream mechanisms. Our results showed that ox-HDL could be ingested by macrophages, causing intracellular lipid accumulation. Like tunicamycin (an ER stress inducer), ox-HDL induced macrophage apoptosis with concomitant activation of ER stress pathway, including nuclear translocation of activating transcription factor 6, phosphorylation of protein kinase-like ER kinase and eukaryotic translation initiation factor 2α, and upregulation of glucose regulated protein 78 and CHOP, which were inhibited by 4-phenylbutyric acid (PBA, an ER stress inhibitor) and CHOP gene silencing...
November 28, 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27893265/va-residential-treatment-providers-use-of-two-evidence-based-psychotherapies-for-ptsd-global-endorsement-versus-specific-components
#8
Richard Thompson, Vanessa Simiola, Paula P Schnurr, Shannon Wiltsey Stirman, Joan M Cook
Objective: Despite a growing body of knowledge about the dissemination of evidence-based psychotherapies (EBPs), their actual use in clinical settings is not well understood. The purpose of the current study was to compare self-reported component use with global use for 2 EBPs for posttraumatic stress disorder (PTSD), prolonged exposure (PE), and cognitive processing therapy (CPT). Method: Around 174 providers from 38 VA PTSD residential treatment programs were asked about both global use and component use of PE and CPT...
November 28, 2016: Psychological Trauma: Theory, Research, Practice and Policy
https://www.readbyqxmd.com/read/27889463/noncanonical-fungal-autophagy-inhibits-inflammation-in-response-to-ifn-%C3%AE-via-dapk1
#9
Vasilis Oikonomou, Silvia Moretti, Giorgia Renga, Claudia Galosi, Monica Borghi, Marilena Pariano, Matteo Puccetti, Carlo A Palmerini, Lucia Amico, Alessandra Carotti, Lucia Prezioso, Angelica Spolzino, Andrea Finocchi, Paolo Rossi, Andrea Velardi, Franco Aversa, Valerio Napolioni, Luigina Romani
Defects in a form of noncanonical autophagy, known as LC3-associated phagocytosis (LAP), lead to increased inflammatory pathology during fungal infection. Although LAP contributes to fungal degradation, the molecular mechanisms underlying LAP-mediated modulation of inflammation are unknown. We describe a mechanism by which inflammation is regulated during LAP through the death-associated protein kinase 1 (DAPK1). The ATF6/C/EBP-β/DAPK1 axis activated by IFN-γ not only mediates LAP to Aspergillus fumigatus but also concomitantly inhibits Nod-like receptor protein 3 (NLRP3) activation and restrains pathogenic inflammation...
November 16, 2016: Cell Host & Microbe
https://www.readbyqxmd.com/read/27889204/tauroursodeoxycholic-acid-attenuates-angiotensin-ii-induced-abdominal-aortic-aneurysm-formation-in-apolipoprotein-e-deficient-mice-by-inhibiting-endoplasmic-reticulum-stress
#10
Y Qin, Y Wang, O Liu, L Jia, W Fang, J Du, Y Wei
OBJECTIVE/BACKGROUND: Abdominal aortic aneurysm (AAA) is characterised by the infiltration of smooth muscle cell (SMC) apoptosis, inflammatory cells, neovascularisation, and degradation of the extracellular matrix. Previous work has shown that endoplasmic reticulum (ER) stress and SMC apoptosis were increased both in a mouse model and human thoracic aortic aneurysm. However, whether the ER stress is activated in AAA formation and whether suppressing ER stress attenuates AAA is unknown...
November 24, 2016: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/27888476/histological-detection-of-dynamic-glial-responses-in-the-dysmyelinating-tabby-jimpy-mutant-brain
#11
Masanao Ikeda, M Ibrahim Hossain, Li Zhou, Masao Horie, Kazuhiro Ikenaka, Arata Horii, Hirohide Takebayashi
Oligodendrocytes (OLs) are glial cells that form myelin sheaths surrounding the axons in the central nervous system (CNS). Jimpy (jp) mutant mice are dysmyelinating disease models that show developmental abnormalities in myelinated OLs in the CNS. The causative gene in jp mice is the proteolipid protein (PLP) located on the X chromosome. Mutations in the jp allele result in exon 5 skipping and expression of abnormal PLP containing a C-terminal frame shift. Many lines of evidence suggest that abnormal PLP in OLs results in endoplasmic reticulum (ER) stress and cell death...
November 25, 2016: Anatomical Science International
https://www.readbyqxmd.com/read/27880042/morus-rubra-extract-induces-cell-cycle-arrest-and-apoptosis-in-human-colon-cancer-cells-through-endoplasmic-reticulum-stress-and-telomerase
#12
Selim Demir, Ibrahim Turan, Yuksel Aliyazicioglu, Kagan Kilinc, Serap Ozer Yaman, Elif Ayazoglu Demir, Ayse Arslan, Ahmet Mentese, Orhan Deger
Many studies have reported cytotoxic effects of different Morus species, but there have been only limited studies on the cytotoxic effect of Morus rubra. The aims of this study were to evaluate the cytotoxic effect of dimethyl sulfoxide extract of M. rubra and to investigate, for the first time, its probable cytotoxic activity in human colon cancer (WiDr) cells, together with the mechanism involved. The cytotoxic activity of extract was determined using MTT assay. The mechanism involved in the cytotoxic effect of extract was then evaluated in terms of apoptosis, and the cell cycle using flow cytometry, mitochondrial membrane potential (MMP) was investigated using the fluorometric method, and expression levels of telomerase and C/EBP homologous protein (CHOP) were investigated using reverse-transcription PCR (RT-PCR)...
November 23, 2016: Nutrition and Cancer
https://www.readbyqxmd.com/read/27871808/new-mechanism-of-lipotoxicity-in-diabetic-cardiomyopathy-deficiency-of-endogenous-h2s-production-and-er-stress
#13
Runmin Guo, Zijun Wu, Jiamei Jiang, Chang Liu, Bin Wu, Xingyue Li, Teng Li, Hailiang Mo, Songjian He, Shanghai Li, Hai Yan, Ruina Huang, Qiong You, Keng Wu
OBJECTIVE: To investigate the roles and mechanisms of endogenous hydrogen sulfide (H2S) and endoplasmic reticulum (ER) stress in the development of diabetic cardiomyopathy (DCM). METHODS: Blood of DCM patients included in the study were collected. The model of DCM rats was established using streptozotocin (STZ) injection. Cardiac lipotoxicity in vitro models were established using 500μM palmitic acid (PA) treatment for 24h in AC16 cardiomyocytes. Endogenous H2S production in plasma, culture supernatant and heart was measured by sulphur ion-selective electrode assay...
November 18, 2016: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/27869144/corrigendum-efficient-delivery-of-c-ebp-beta-gene-into-human-mesenchymal-stem-cells-via-polyethylenimine-coated-gold-nanoparticles-enhances-adipogenic-differentiation
#14
Joydeep Das, Yun-Jung Choi, Hideyo Yasuda, Jae Woong Han, Chankyu Park, Hyuk Song, Hojae Bae, Jin-Hoi Kim
No abstract text is available yet for this article.
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27867269/platyphylloside-isolated-from-betula-platyphylla-inhibit-adipocyte-differentiation-and-induce-lipolysis-via-regulating-adipokines-including-ppar%C3%AE-in-3t3-l1-cells
#15
Mina Lee, Sang Hyun Sung
BACKGROUND: Obesity causes or aggravates many health problems, both independently and in association with several pathological disorders, including Type II diabetes, hypertension, atherosclerosis, and cancer. Therefore, we screened small compounds isolated from natural products for the development of anti-obesity drugs. OBJECTIVE: The purpose of this study was to investigate the anti-adipogenic activities of platyphylloside, diarylheptanoid isolated from Betula platyphylla, which was selected based on the screening using 3T3-L1 cells...
October 2016: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/27865878/bone-marrow-mesenchymal-stem-cells-decrease-chop-expression-and-neuronal-apoptosis-after-spinal-cord-injury
#16
Chuanlong Gu, Heyangzi Li, Chao Wang, Xinghui Song, Yuemin Ding, Mingzhi Zheng, Wei Liu, Yingying Chen, Xiaoming Zhang, Linlin Wang
Spinal cord injury (SCI) leads to irreversible neuronal loss and ultimately leads to paralysis. Bone marrow derived mesenchymal stem cells (BMSCs) have been demonstrated to be an effective approach to treat SCI. The present study was designed to investigate the role of BMSCs in rats with spinal cord injury and in oxygen-glucose deprivation (OGD) treated motor neurons. The results demonstrated that BMSCs could improve locomotor function and decrease expression of pro-apoptotic transcription factor C/EBP homologous protein (CHOP) and apoptosis after SCI...
November 16, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27864172/the-ebpa-rpon-regulatory-pathway-of-the-pathogen-leptospira-interrogans-is-essential-for-survival-in-the-environment
#17
Wei-Lin Hu, Christopher J Pappas, Jun-Jie Zhang, You-Yun Yang, Jie Yan, Mathieu Picardeau, X Frank Yang
Leptospira interrogans is the agent of leptospirosis, a re-emerging zoonotic disease. Leptospirosis is transmitted to humans through environmental surface waters contaminated by the urine of mammals that are chronically infected by pathogenic strains that are able to survive in water for long periods. Little is known about the regulatory pathways underlying environmental sensing and host adaptation of L. interrogans during its enzootic cycle. This study identifies the EbpA-RpoN regulatory pathway in L. interrogans In this pathway, EbpA, a σ(54) activator and putative prokaryotic enhancer-binding protein (EBP), and the alternative sigma factor RpoN (σ(54)) control expression of at least three genes - encoding AmtB (an ammonium transport protein) and two proteins of unknown function...
November 18, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27860153/a-call-for-extending-the-utility-of-evidence-based-practice-adapting-ebp-for-health-policy-impact
#18
EDITORIAL
Jacqueline M Loversidge
No abstract text is available yet for this article.
December 2016: Worldviews on Evidence-based Nursing
https://www.readbyqxmd.com/read/27857013/-structural-model-of-evidence-based-practice-implementation-among-clinical-nurses
#19
Hyunyoung Park, Keum Seong Jang
PURPOSE: This study was conducted to develop and test a structural model of evidence-based practice (EBP) implementation among clinical nurses. The model was based on Melnyk and Fineout-Overholt's Advancing Research and Clinical Practice through Close Collaboration model and Rogers' Diffusion of Innovations theory. METHODS: Participants were 410 nurses recruited from ten different tertiary hospitals in Korea. A structured self-report questionnaire was used to assess EBP knowledge/skills, EBP beliefs, EBP attitudes, organizational culture & readiness for EBP, dimensions of a learning organization and organizational innovativeness...
October 2016: Journal of Korean Academy of Nursing
https://www.readbyqxmd.com/read/27847321/aicar-activates-er-stress-dependent-apoptosis-in-gallbladder-cancer-cells
#20
Jifeng Nie, Aidong Liu, Qunya Tan, Kai Zhao, Kui Hu, Yong Li, Bin Yan, Lin Zhou
AICAR (5-Aminoimidazole-4-carboxamide riboside or acadesine) is an AMP-activated protein kinase (AMPK) agonist, its activity in human gallbladder cancer cells was evaluated here. We show that AICAR provoked significant apoptosis in human gallbladder cancer cell lines (Mz-ChA-1, QBC939 and GBC-SD) and primary gallbladder cancer cells. AICAR-induced cytotoxicity in gallbladder cancer cells appears independent of AMPK activation. Inhibition of AMPK, via AMPKα shRNA knockdown or dominant negative mutation (T172A), failed to rescue GBC-SD cells from AICAR...
November 12, 2016: Biochemical and Biophysical Research Communications
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