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https://www.readbyqxmd.com/read/28734243/caveolin-1-related-autophagy-initiated-by-aldosterone-induced-oxidation-promotes-liver-sinusoidal-endothelial-cells-defenestration
#1
Xiaoying Luo, Dan Wang, Xuan Luo, Xintao Zhu, Guozhen Wang, Zuowei Ning, Yang Li, Xiaoxin Ma, Renqiang Yang, Siyi Jin, Yun Huang, Ying Meng, Xu Li
Aldosterone, with pro-oxidation and pro-autophagy capabilities, plays a key role in liver fibrosis. However, the mechanisms underlying aldosterone-promoted liver sinusoidal endothelial cells (LSECs) defenestration remain unknown. Caveolin 1 (Cav1) displays close links with autophagy and fenestration. Hence, we aim to investigate the role of Cav1-related autophagy in LSECs defenestration. We found the increase of aldosterone/MR (mineralocorticoid receptor) level, oxidation, autophagy, and defenestration in LSECs in the human fibrotic liver, BDL or hyperaldosteronism models; while antagonizing aldosterone or inhibiting autophagy relieved LSECs defenestration in BDL-induced fibrosis or hyperaldosteronism models...
July 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28734223/differential-effects-of-citric-acid-on-cadmium-uptake-and-accumulation-between-tall-fescue-and-kentucky-bluegrass
#2
ShuTing Wang, Qin Dong, ZhaoLong Wang
Organic acids play an important role in cadmium availability, uptake, translocation, and detoxification. A sand culture experiment was designed to investigate the effects of citric acid on Cd uptake, translocation, and accumulation in tall fescue and Kentucky bluegrass. The results showed that two grass species presented different Cd chemical forms, organic acid components and amount in roots. The dormant Cd accumulated in roots of tall fescue was the pectate- and protein- integrated form, which contributed by 84...
July 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28734213/enhanced-cadmium-phytoremediation-of-glycine-max-l-through-bioaugmentation-of-cadmium-resistant-bacteria-assisted-by-biostimulation
#3
Pongsarun Rojjanateeranaj, Chirawee Sangthong, Benjaphorn Prapagdee
This study examined the potential of three strains of cadmium-resistant bacteria, including Micrococcus sp., Pseudomonas sp. and Arthrobacter sp., to promote root elongation of Glycine max L. seedlings, soil cadmium solubility and cadmium phytoremediation in G. max L. planted in soil highly polluted with cadmium with and without nutrient biostimulation. Micrococcus sp. promoted root length in G. max L. seedlings under toxic cadmium conditions. Soil inoculation with Arthrobacter sp. increased the bioavailable fraction of soil cadmium, particularly in soil amended with a C:N ratio of 20:1...
July 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28734210/effects-analysis-of-substituent-characteristics-and-solvents-on-the-photodegradation-of-polybrominated-diphenyl-ethers
#4
Long Jiang, Youli Qiu, Yu Li
The ultraviolet spectra and electron transition information of 209 polybrominated diphenyl ethers (PBDEs) in gas were first calculated via time-dependent density functional theory using Gaussian 09 software. The main and second-order interactional effects of substituent characteristics on the photodegradation of PBDEs were then analysed using a full factorial experimental design. Solvent effects were considered to research the effect and promotion mechanism of solvent molecules on the photodegradation of PBDEs compared with that in gas...
July 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28734184/an-empirical-review-of-potential-mediators-and-mechanisms-of-prolonged-exposure-therapy
#5
REVIEW
Andrew A Cooper, Erin G Clifton, Norah C Feeny
Prolonged exposure (PE) is an empirically-supported treatment for posttraumatic stress disorder (PTSD), but the precise mechanism(s) by which PE promotes symptom change are not well established. Understanding how PE works is critical to improving clinical outcomes, advancing dissemination efforts, and enhancing transdiagnostic models of psychopathology. However, mechanisms research conducted in clinical treatment settings is complex, and findings may be difficult to interpret without appropriate context. This is the first review of potential mechanisms of PE to provide such context, by rigorously evaluating empirical findings in line with essential criteria for effective research on mechanisms (or mediators)...
July 11, 2017: Clinical Psychology Review
https://www.readbyqxmd.com/read/28734116/preparing-platelet-rich-plasma-with-whole-blood-harvested-intraoperatively-during-spinal-fusion
#6
Bin Shen, Zheng Zhang, Ning-Feng Zhou, Yu-Feng Huang, Yu-Jie Bao, De-Sheng Wu, Ya-Dong Zhang
BACKGROUND Platelet-rich plasma (PRP) has gained growing popularity in use in spinal fusion procedures in the last decade. Substantial intraoperative blood loss is frequently accompanied with spinal fusion, and it is unknown whether blood harvested intraoperatively qualifies for PRP preparation. MATERIAL AND METHODS Whole blood was harvested intraoperatively and venous blood was collected by venipuncture. Then, we investigated the platelet concentrations in whole blood and PRP, the concentration of growth factors in PRP, and the effects of PRP on the proliferation and viability of human bone marrow-derived mesenchymal stem cells (HBMSCs)...
July 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28732308/ripk3-induces-mitochondrial-apoptosis-via-inhibition-of-fundc1-mitophagy-in-cardiac-ir-injury
#7
Hao Zhou, Pingjun Zhu, Jun Guo, Nan Hu, Shuyi Wang, Dandan Li, Shunying Hu, Jun Ren, Feng Cao, Yundai Chen
Ripk3-required necroptosis and mitochondria-mediated apoptosis are the predominant types of cell death that largely account for the development of cardiac ischemia reperfusion injury (IRI). Here, we explored the effect of Ripk3 on mitochondrial apoptosis. Compared with wild-type mice, the infarcted area in Ripk3-deficient (Ripk3(-/-)) mice had a relatively low abundance of apoptotic cells. Moreover, the loss of Ripk3 protected the mitochondria against IRI and inhibited caspase9 apoptotic pathways. These protective effects of Ripk3 deficiency were relied on mitophagy activation...
July 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28732298/stomatal-and-non-stomatal-factors-regulated-the-photosynthesis-of-soybean-seedlings-in-the-present-of-exogenous-bisphenol-a
#8
Liya Jiao, Lihong Wang, Qing Zhou, Xiaohua Huang
Bisphenol A (BPA) is an emerging environmental endocrine disruptor that has toxic effects on plants growth. Photosynthesis supplies the substances and energy required for plant growth, and regulated by stomatal and non-stomatal factors. Therefore, in this study, to reveal how BPA affects photosynthesis in soybean seedlings (Glycine max L.) from the perspective of stomatal and non-stomatal factors, the stomatal factors (stomatal conductance and behaviours) and non-stomatal factors (Hill reaction, apparent quantum efficiency, Rubisco activity, carboxylation efficiency, the maximum Rubisco carboxylation velocity, ribulose-1,5-bisphospate regeneration capacities mediated by maximum electron transport rates, and triose phosphate utilization rate) were investigated using a portable photosynthesis system...
July 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28732179/kgf-enhances-oral-epithelial-adhesion-and-rete-peg-elongation-via-integrins
#9
G L Sa, X P Xiong, J G Ren, J Y Wang, H F Xia, Z K Liu, S G He, Y F Zhao
Oral epithelial adhesion to the lamina propria underlies the physiologic function of the oral mucosa and contributes to resisting bacterial invasion, preventing body fluid loss, and maintaining routine chewing; thus, understanding the factors that positively influence oral epithelial adhesion is a research topic of great interest. Rete pegs contribute to oral epithelial adhesion by enlarging the contact areas, whereas integrins are the major molecules that mediate epithelial cell adhesion to the basement membrane...
July 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28732118/pd-1-checkpoint-blockade-in-combination-with-an-mtor-inhibitor-restrains-hepatocellular-carcinoma-growth-induced-by-hepatoma-cell-intrinsic-pd-1
#10
Hui Li, Xiaoqiang Li, Shuang Liu, Lei Guo, Bo Zhang, Jubo Zhang, Qinghai Ye
Inhibitors of PD-1 administered as single agents have resulted in durable tumor regression in advanced cancer patients. However, only a minority of cancer patients respond to anti PD-1 immunotherapy. Here, we show that PD-1 expression in hepatocellular carcinoma (HCC) promotes tumor growth independently of adaptive immunity. Knockdown of PD-1 suppress tumor growth, whereas PD-1 overexpression enhances tumorigenesis in immunodeficient xenografted mice. Mechanistically, PD-1 binds the downstream mTOR effectors eukaryotic initiation factor 4E (eIF4E) and ribosomal protein S6 (S6), thus promoting their phosphorylation...
July 21, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28732092/dietary-oleic-acid-regulates-hepatic-lipogenesis-through-a-liver-x-receptor-dependent-signaling
#11
Simon Ducheix, Alexandra Montagner, Arnaud Polizzi, Frédéric Lasserre, Marion Régnier, Alice Marmugi, Fadila Benhamed, Justine Bertrand-Michel, Laila Mselli-Lakhal, Nicolas Loiseau, Pascal G Martin, Jean-Marc Lobaccaro, Laurent Ferrier, Catherine Postic, Hervé Guillou
Olive oil consumption is beneficial for health as it is associated with a decreased prevalence of cancer and cardiovascular diseases. Oleic acid is, by far, the most abundant component of olive oil. Since it can be made through de novo synthesis in animals, it is not an essential fatty acid. While it has become clear that dietary oleic acid regulates many biological processes, the signaling pathway involved in these regulations remains poorly defined. In this work we tested the impact of an oleic acid-rich diet on hepatic gene expression...
2017: PloS One
https://www.readbyqxmd.com/read/28732079/lmp1-mediated-glycolysis-induces-myeloid-derived-suppressor-cell-expansion-in-nasopharyngeal-carcinoma
#12
Ting-Ting Cai, Shu-Biao Ye, Yi-Na Liu, Jia He, Qiu-Yan Chen, Hai-Qiang Mai, Chuan-Xia Zhang, Jun Cui, Xiao-Shi Zhang, Pierre Busson, Yi-Xin Zeng, Jiang Li
Myeloid-derived suppressor cells (MDSCs) are expanded in tumor microenvironments, including that of Epstein-Barr virus (EBV)-associated nasopharyngeal carcinoma (NPC). The link between MDSC expansion and EBV infection in NPC is unclear. Here, we show that EBV latent membrane protein 1 (LMP1) promotes MDSC expansion in the tumor microenvironment by promoting extra-mitochondrial glycolysis in malignant cells, which is a scenario for immune escape initially suggested by the frequent, concomitant detection of abundant LMP1, glucose transporter 1 (GLUT1) and CD33+ MDSCs in tumor sections...
July 21, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28732065/direct-targets-of-pstat5-signalling-in-erythropoiesis
#13
Kevin R Gillinder, Hugh Tuckey, Charles C Bell, Graham W Magor, Stephen Huang, Melissa D Ilsley, Andrew C Perkins
Erythropoietin (EPO) acts through the dimeric erythropoietin receptor to stimulate proliferation, survival, differentiation and enucleation of erythroid progenitor cells. We undertook two complimentary approaches to find EPO-dependent pSTAT5 target genes in murine erythroid cells: RNA-seq of newly transcribed (4sU-labelled) RNA, and ChIP-seq for pSTAT5 30 minutes after EPO stimulation. We found 302 pSTAT5-occupied sites: ~15% of these reside in promoters while the rest reside within intronic enhancers or intergenic regions, some >100kb from the nearest TSS...
2017: PloS One
https://www.readbyqxmd.com/read/28732013/the-kp1_4563-gene-is-regulated-by-the-camp-receptor-protein-and-controls-type-3-fimbrial-function-in-klebsiella-pneumoniae-ntuh-k2044
#14
Mei Luo, Shiya Yang, Xuan Li, Pin Liu, Jian Xue, Xipeng Zhou, Kewen Su, Xuan Xu, Ying Qing, Jingfu Qiu, Yingli Li
Klebsiella pneumoniae (K. pneumoniae) is an opportunistic pathogen that can adhere to host cells or extracellular matrix via type 1 and type 3 fimbriae. KP1_4563 is a gene encoding a hypothetical protein in K. pneumoniae NTUH-K2044. KP1_4563 is located between the type 1 and type 3 fimbrial gene clusters and is likely associated with fimbrial function given its putative conserved domains of unknown function (DUF1471). Cyclic AMP receptor protein (CRP) regulates virulence-related gene expression and is a crucial transcriptional regulator in many bacteria...
2017: PloS One
https://www.readbyqxmd.com/read/28731785/networks-of-transcription-factors-for-oct4-expression-in-mice
#15
Yu-Qiang Li
The present review aimed to assess the networks of transcription factors regulating the Oct4 expression in mice. Through a comprehensive analysis of the binding sites and the interrelationships of the transcription factors of Oct4, it is found that transcription factors of Oct4 form three regulating complexes centered by Oct4-Sox2, Nanog, and Lrh1. They bind on CR4, CR2, and CR1 regions of Oct4 promoter/enhancer, respectively, to activate Oct4 transcription synergistically. This article also discusses the mechanisms of fine-tuning the Oct4 expression...
July 21, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28731633/australian-consumer-awareness-of-health-benefits-associated-with-vegetable-consumption
#16
Reetica Rekhy, Aila Khan, Jocelyn Eason, Hazel Mactavish-West, Carolyn Lister, Robyn Mcconchie
AIM: The present study investigated the perceived health benefits of specific vegetable consumption to guide the use of nutrition and health claims on vegetable marketing collateral. METHODS: Free elicitation and consumer ranking data were collected through an online survey of 1000 adults from across Australia and analysed for the perceived importance of vegetables in the daily diet, number of serves consumed per day, knowledge about health-related benefits of specific vegetables and perceived health benefits of vegetable consumption...
April 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28731580/rewiring-the-glucose-transportation-and-central-metabolic-pathways-for-overproduction-of-n-acetylglucosamine-in-bacillus-subtilis
#17
Yang Gu, Jieying Deng, Yanfeng Liu, Jianghua Li, Hyun-Dong Shin, Guocheng Du, Jian Chen, Long Liu
N-acetylglucosamine (GlcNAc) is an important amino sugar extensively used in the healthcare field. in a previous study, we constructed the recombinant Bacillus subtilis strain BSGN6-PxylA -glmS-pP43NMK-GNA1 (BN0-GNA1) for microbial production of GlcNAc by pathway design and modular optimization. Here, we further improved the production of GlcNAc by rewiring both the glucose transportation and central metabolic pathways. First, the phosphotransferase system (PTS) was blocked by deletion of three genes, yyzE (encoding the PTS system transporter subunit iiA YyzE), ypqE (encoding the PTS system transporter subunit iiA YpqE), and ptsG (encoding the PTS system glucose-specific EiiCBA component), resulting in 47...
July 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28731466/interaction-of-galectin-3-with-muc1-on-cell-surface-promotes-egfr-dimerization-and-activation-in-human-epithelial-cancer-cells
#18
Tushar Piyush, Anisha R Chacko, Paulina Sindrewicz, John Hilkens, Jonathan M Rhodes, Lu-Gang Yu
Epidermal growth factor receptor (EGFR) is an important regulator of epithelial cell growth and survival in normal and cancerous tissues and is a principal therapeutic target for cancer treatment. EGFR is associated in epithelial cells with the heavily glycosylated transmembrane mucin protein MUC1, a natural ligand of galectin-3 that is overexpressed in cancer. This study reveals that the expression of cell surface MUC1 is a critical enhancer of EGF-induced EGFR activation in human breast and colon cancer cells...
July 21, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28731447/chromatin-bound-oxidized-%C3%AE-synuclein-causes-strand-breaks-in-neuronal-genomes-in-in-vitro-models-of-parkinson-s-disease
#19
Velmarini Vasquez, Joy Mitra, Pavana M Hegde, Arvind Pandey, Shiladitya Sengupta, Sankar Mitra, K S Rao, Muralidhar L Hegde
Alpha-synuclein (α-Syn) overexpression and misfolding/aggregation in degenerating dopaminergic neurons have long been implicated in Parkinson's disease (PD). The neurotoxicity of α-Syn is enhanced by iron (Fe) and other pro-oxidant metals, leading to generation of reactive oxygen species in PD brain. Although α-Syn is predominantly localized in presynaptic nerve terminals, a small fraction exists in neuronal nuclei. However, the functional and/or pathological role of nuclear α-Syn is unclear. Following up on our earlier report that α-Syn directly binds DNA in vitro, here we confirm the nuclear localization and chromatin association of α-Syn in neurons using proximity ligation and chromatin immunoprecipitation analysis...
July 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731285/plant-infection-by-two-different-viruses-induce-contrasting-changes-of-vectors-fitness-and-behavior
#20
Quentin Chesnais, Aude Couty, Maryline Uzest, Véronique Brault, Arnaud Ameline
Insect-vectored plant viruses can induce changes in plant phenotypes, thus influencing plant-vector interactions in a way that may promote their dispersal according to their mode of transmission (i.e. circulative vs. non-circulative). This indirect vector manipulation requires host-virus-vector co-evolution and would thus be effective solely in very specific plant-virus-vector species associations. Some studies suggest this manipulation may depend on multiple factors relative to various intrinsic characteristics of vectors such as transmission efficiency...
July 21, 2017: Insect Science
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