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https://www.readbyqxmd.com/read/28214842/inhibition-of-methylglyoxal-induced-ages-rage-expression-contributes-to-dermal-protection-by-n-acetyl-l-cysteine
#1
Chun-Tao Yang, Fu-Hui Meng, Li Chen, Xiang Li, Lai-Jian Cen, Yu-Hua Wen, Hui Zhang, Cai-Chen Li
BACKGROUND/AIM: Accumulation of advanced glycation end products (AGEs) is a major cause of diabetes mellitus (DM) skin complications. Methylglyoxal (MGO), a reactive dicarbonyl compound, is a crucial intermediate of AGEs generation. N-acetyl-L-cysteine (NAC), an active ingredient of some medicines, can induce endogenous GSH and hydrogen sulfide generation, and set off a condensation reaction with MGO. However, there is rare evidence to show NAC can alleviate DM-induced skin injury through inhibition of AGEs generation or toxicity...
February 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28212704/neurochemical-differences-in-learning-and-memory-paradigms-among-rats-supplemented-with-anthocyanin-rich-blueberry-diets-and-exposed-to-acute-doses-of-56-fe-particles
#2
Shibu M Poulose, Bernard M Rabin, Donna F Bielinski, Megan E Kelly, Marshall G Miller, Nopporn Thanthaeng, Barbara Shukitt-Hale
The protective effects of anthocyanin-rich blueberries (BB) on brain health are well documented and are particularly important under conditions of high oxidative stress, which can lead to "accelerated aging." One such scenario is exposure to space radiation, consisting of high-energy and -charge particles (HZE), which are known to cause cognitive dysfunction and deleterious neurochemical alterations. We recently tested the behavioral and neurochemical effects of acute exposure to HZE particles such as (56)Fe, within 24-48h after exposure, and found that radiation primarily affects memory and not learning...
February 2017: Life Sciences in Space Research
https://www.readbyqxmd.com/read/28211759/gamma-tocopherol-supplementation-ameliorated-hyper-inflammatory-response-during-the-early-cutaneous-wound-healing-in-alloxan-induced-diabetic-mice
#3
Jihyun Shin, Soo Jin Yang, Yunsook Lim
Delayed wound healing is one of the major diabetic complications. During wound healing process, the early inflammatory stage is important for better prognosis. One of antioxidant nutrient, gamma-tocopherol (GT) is considered to regulate inflammatory conditions. This study investigated the effect of GT supplementation on mechanism associated with inflammation, oxidative stress, and apoptosis during early cutaneous wound healing in diabetic mice. Diabetes was induced by alloxan injection in ICR mice. All mice were divided into three groups: non-diabetic control mice (CON), diabetic control mice (DMC), and diabetic mice supplemented with GT (GT)...
March 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28209739/myocardial-ischemic-tolerance-in-rats-subjected-to-endurance-exercise-training-during-adaptation-to-chronic-hypoxia
#4
Petra Alánová, Anna Chytilová, Jan Neckář, Jaroslav Hrdlička, Petra Míčová, Kristýna Holzerová, Markéta Hlaváčková, Kristýna Macháčková, František Papoušek, Jana Vašinová, Daniel Benák, Olga Nováková, František Kolář
Chronic hypoxia and exercise are natural stimuli that confer sustainable cardioprotection against ischemia/reperfusion (I/R) injury but it is unknown whether they can act in synergy to enhance ischemic resistance. Inflammatory response mediated by tumor necrosis factor-α (TNF-α) plays a role in the infarct size-limitation by continuous normobaric hypoxia (CNH) whereas exercise is associated with anti-inflammatory effects. This study was conducted to determine whether exercise training performed under conditions of CNH (12% O2) affects myocardial ischemic resistance with respect to inflammatory and redox status...
February 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28208071/anthocyanin-suppresses-cocrmo-particle-induced-osteolysis-by-inhibiting-ikk%C3%AE-%C3%AE-mediated-nf-%C3%AE%C2%BAb-signaling-in-a-mouse-calvarial-model
#5
Yamin Li, Juehong Li, Bin Li, Hui Qin, Xiaochun Peng, Yaochao Zhao, Yunsu Chen
Wear particle-induced osteolysis and bone resorption have been identified as critical factors of implant failure and total joint revision, in which nuclear factor kappa B (NF-κB) signaling and chronic inflammation have been shown to play key roles. Although anthocyanin is known to have anti-inflammatory function via blocking NF-κB pathway, it is still unclear whether anthocyanin has a protective effect on particle-induced osteolysis. In the present study, we aimed to investigate the detailed effects and the underlying mechanism of anthocyanin on CoCrMo particle-induced osteolysis in a mouse calvavial model...
February 13, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28202548/neutrophil-elastase-regulates-emergency-myelopoiesis-preceding-systemic-inflammation-in-diet-induced-obesity
#6
Jun-Yuan Huang, Qiong Lin Zhou, Chun-Hong Huang, Ye Song, Andria G Sharma, Zhangping Liao, Kavin Zhu, Miles W Massidda, Ryan R Jamieson, Jun-Yuan Zhang, Daniel G Tenen, Zhen Y Jiang
Inflammation plays a significant role in the development of obesity-related complications, but the molecular events that initiate and propagate such inflammation remain unclear. Here, we report that mice fed a high-fat diet (HFD) for as short as one to three days show increased myeloid progenitors differentiation into neutrophils and monocytes but reduced B lymphocyte production in the bone marrow (BM). Levels of neutrophil elastase (NE) and the nuclear factors CCAAT-enhancer-binding protein alpha (C/EBPα) and growth factor independent 1 (GFI-1) are elevated in hematopoietic stem and progenitor cells (HSPCs) from HFD-fed mice, but mice lacking either NE or C/EBPα are resistant to HFD-induced myelopoiesis...
February 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28201898/a-rayleighian-approach-for-modeling-kinetics-of-ionic-transport-in-polymeric-media
#7
Rajeev Kumar, Jyoti P Mahalik, Vera Bocharova, Eric W Stacy, Catalin Gainaru, Tomonori Saito, Mallory P Gobet, Steve Greenbaum, Bobby G Sumpter, Alexei P Sokolov
We report a theoretical approach for analyzing impedance of ionic liquids (ILs) and charged polymers such as polymerized ionic liquids (PolyILs) within linear response. The approach is based on the Rayleigh dissipation function formalism, which provides a computational framework for a systematic study of various factors, including polymer dynamics, in affecting the impedance. We present an analytical expression for the impedance within linear response by constructing a one-dimensional model for ionic transport in ILs/PolyILs...
February 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28198528/the-expression-of-inhibitor-of-nuclear-factor-kappa-b-kinase-epsilon-ikk%C3%AE%C2%B5-in-human-aortic-aneurysm
#8
Leiyang Zhang, Lei Wang, Wen Chen, Yueyue Xu, Liming Wang, Reinard Iskandar, Yifei Wang, Xin Chen
BACKGROUND: Aortic aneurysm (AA) is one of the most common causes of sudden death among elderly people. Although AA can be detected by non-invasive imaging techniques, there are no pharmacological treatments currently available to prevent progression at any stage of the disease. In this study we will explore the expression of IKKε in AA and its potential underlying molecular mechanism in AA. Material s and methods: Human aortic tissue was taken from 14 patients who underwent surgical repair of AA for the AA group and another 11 patients with normal aorta who underwent aortic valve replacement surgery for the control group...
February 15, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28195309/ploidy-tug-of-war-evolutionary-and-genetic-environments-influence-the-rate-of-ploidy-drive-in-a-human-fungal-pathogen
#9
Aleeza C Gerstein, Heekyung Lim, Judith Berman, Meleah A Hickman
Variation in baseline ploidy is seen throughout the tree of life, yet the factors that determine why one ploidy level is maintained over another remain poorly understood. Experimental evolution studies using asexual fungal microbes with manipulated ploidy levels intriguingly reveals a propensity to return to the historical baseline ploidy, a phenomenon that we term 'ploidy drive'. We evolved haploid, diploid, and polyploid strains of the human fungal pathogen Candida albicans under three different nutrient limitation environments to test whether these conditions, hypothesized to select for low ploidy levels, could counteract ploidy drive...
February 14, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28193700/the-nuclear-transport-receptor-importin-11-is-a-tumor-suppressor-that-maintains-pten-protein
#10
Muhan Chen, Dawid G Nowak, Navneet Narula, Brian Robinson, Kaitlin Watrud, Alexandra Ambrico, Tali M Herzka, Martha E Zeeman, Matthias Minderer, Wu Zheng, Saya H Ebbesen, Kendra S Plafker, Carlos Stahlhut, Victoria M Y Wang, Lorna Wills, Abu Nasar, Mireia Castillo-Martin, Carlos Cordon-Cardo, John E Wilkinson, Scott Powers, Raffaella Sordella, Nasser K Altorki, Vivek Mittal, Brendon M Stiles, Scott M Plafker, Lloyd C Trotman
Phosphatase and tensin homologue (PTEN) protein levels are critical for tumor suppression. However, the search for a recurrent cancer-associated gene alteration that causes PTEN degradation has remained futile. In this study, we show that Importin-11 (Ipo11) is a transport receptor for PTEN that is required to physically separate PTEN from elements of the PTEN degradation machinery. Mechanistically, we find that the E2 ubiquitin-conjugating enzyme and IPO11 cargo, UBE2E1, are limiting factors for PTEN degradation...
February 13, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28192751/ameliorative-potential-of-linagliptin-and-or-calcipotriol-on-bleomycin-induced-lung-fibrosis-in-vivo-and-in-vitro-study
#11
Ahmed M Kabel, Maaly A Abd Elmaaboud, Aliaa Atef, Mohammed H Baali
Pulmonary fibrosis is a serious medical problem that may significantly compromise respiratory functions. The aim of this work was to study the effect of linagliptin and/or calcipotriol on bleomycin-induced pulmonary fibrosis and to explore the possible mechanisms underlying this effect. One hundred and twenty male C57BL/6 mice were divided into 6 equal groups as follows: control group; bleomycin group; bleomycin+carboxymethylcellulose group; bleomycin+linagliptin group; bleomycin+calcipotriol group and bleomycin+linagliptin+calcipotriol group...
February 4, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28192374/transcription-factor-nfat5-promotes-macrophage-survival-in-rheumatoid-arthritis
#12
Susanna Choi, Sungyong You, Donghyun Kim, Soo Youn Choi, H Moo Kwon, Hyun-Sook Kim, Daehee Hwang, Yune-Jung Park, Chul-Soo Cho, Wan-Uk Kim
Defective apoptotic death of activated macrophages has been implicated in the pathogenesis of rheumatoid arthritis (RA). However, the molecular signatures defining apoptotic resistance of RA macrophages are not fully understood. Here, global transcriptome profiling of RA macrophages revealed that the osmoprotective transcription factor nuclear factor of activated T cells 5 (NFAT5) critically regulates diverse pathologic processes in synovial macrophages including the cell cycle, apoptosis, and proliferation...
February 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28188651/the-torc1-sch9-rim15-signaling-pathway-represses-yeast-to-hypha-transition-in-response-to-glycerol-availability-in-the-oleaginous-yeast-yarrowia-lipolytica
#13
Shu-Heng Liang, Heng Wu, Rui-Rui Wang, Qiang Wang, Tao Shu, Xiang-Dong Gao
The yeast-to-hypha dimorphic transition is important for survival under nutrient starvation in fungi. The oleaginous yeast Yarrowia lipolytica grows in the oval-shaped yeast form in glycerol media whereas it adopts a filamentous form in glucose media. It is not clear why this yeast responds differently to glycerol and glucose. Here, we show that glycerol blocks dimorphic transition even in the presence of glucose whereas glycerol depletion induces filamentous growth, suggesting that dimorphic transition is repressed in response to glycerol availability...
February 11, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28188614/foxa2-a-novel-protein-partner-of-tumour-suppressor-menin-is-deregulated-in-mouse-and-human-men1-glucagonomas
#14
Rémy Bonnavion, Romain Teinturier, Samuele Gherardi, Emmanuelle Leteurtre, Run Yu, Martine Cordier-Bussat, Rui Du, François Pattou, Marie-Christine Vantyghem, Philippe Bertolino, Jieli Lu, Chang Xian Zhang
Foxa2, known as one of the pioneer factors, plays a crucial role in islet development and endocrine functions. Its expression and biological functions are regulated by various factors, including in particular insulin and glucagon. However, its expression and biological role in the adult pancreatic α-cells remain elusive. In the current study, we showed that Foxa2 was overexpressed in islets from α-cell-specific Men1 mutant mice, both at the transcriptional and protein levels. More importantly, immunostaining analyses detected its prominent nuclear accumulation, specifically in α-cells, at a very early stage after Men1-disruption...
February 11, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28187939/responses-of-manure-decomposition-to-nitrogen-addition-role-of-chemical-composition
#15
Yehong Xu, Zengming Chen, Weixin Ding, Jianling Fan
Understanding the interactions among organic manure chemical composition, decomposition and nitrogen (N) fertilization is critical for sustainable agriculture management. Six organic manures were incubated in a cultivated black soil with or without N addition for one year, and carbon dioxide (CO2) emissions from these organic manures were monitored. Chemical compositions of the organic manures were determined by elemental analysis, proximate chemical analysis, and carbon (C)-13 nuclear magnetic resonance spectroscopy, and evaluated after cupric-oxide oxidation for lignin biomarkers...
February 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28187781/priming-in-response-to-pro-inflammatory-cytokines-is-a-feature-of-adult-synovial-but-not-dermal-fibroblasts
#16
Thomas Crowley, John D O'Neil, Holly Adams, Andrew M Thomas, Andrew Filer, Christopher D Buckley, Andrew R Clark
BACKGROUND: It has been hypothesized that chronic inflammatory diseases such as rheumatoid arthritis (RA) may be caused by a failure of negative feedback mechanisms. This study sought to examine negative feedback mechanisms in fibroblast-like synoviocytes (FLS), one of the most abundant cell types in the joint. We hypothesized that prior exposure of healthy FLS to an inflammatory stimulus would attenuate their responses to a second inflammatory stimulus, in the same way that negative feedback mechanisms desensitize macrophages to repeated stimulation by lipopolysaccharide...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28187442/the-association-between-nuclear-receptors-and-ocular-diseases
#17
REVIEW
Ke Liu, Chang Zou, Bo Qin
Nuclear hormone receptors (NRs) are one of the most abundant transcription factors in the human cells. They regulate expression of genes via interactions with corresponding ligands, co-activators, and co-repressors. These molecular pathways play important roles in the development, cell differentiation, and physiologic and metabolic processes. Increasingly, targeting nuclear receptors is becoming a promising strategy for new drug development. The aim of this review is to discuss the association between nuclear receptors and eye development, and expand their role in various ocular diseases such as keratitis, cataract, glaucoma, uveitis, retinopathy, and ophthalmic tumors...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28187436/dishevelled2-promotes-apoptosis-and-inhibits-inflammatory-cytokine-secretion-in-rheumatoid-arthritis-fibroblast-like-synoviocytes-through-crosstalk-with-the-nf-%C3%AE%C2%BAb-pathway
#18
Xing Zhen Liu, Jie Fan, Ke Qi, Shu Peng Liu, Wei Dong Xu, Ying Gao, Xiao Dan Gu, Jia Li, Chen Guang Bai, Ye Qing Shi, Lan Ling Zhang, Dong Bao Zhao
Dishevelled (Dvl) not only links the canonical Wnt and non-canonical Wnt pathways but can also crosstalk with other pathways. As there is no systematic study to date on Dvl in rheumatoid arthritis (RA), we explored the impact of Dvl2 on proliferation and inflammatory cytokine secretion in RA fibroblast-like synoviocytes (FLSs). Expression of Dvl2 in RA synovial tissue and RA-FLSs was measured. Dvl2 was overexpressed in collagen-induced arthritis rats and human RA-FLSs,. the apoptosis and secretion of inflammatory cytokines were observed...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28186459/bioactivity-of-carotenoids-chasms-of-knowledge
#19
Torsten Bohn
Carotenoid dietary intake, especially within fruits/vegetables and their plasma levels have been associated in many epidemiological studies with a reduced risk of several chronic diseases, including type-2 diabetes, cardiovascular diseases, several types of cancer, and agerelated macular degeneration. However, intervention trials with isolated carotenoids (as supplements) have fallen short of fulfi lling the hopes that were placed in these lipophilic pigments, often producing no positive or even adverse effects, such as increased lung cancer rate or total mortality...
February 10, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28186440/britanin-ameliorates-cerebral-ischemia-reperfusion-injury-by-inducing-the-nrf2-protective-pathway
#20
Guozhen Wu, Lili Zhu, Xing Yuan, Hao Chen, Rui Xiong, Shoude Zhang, Hao Cheng, Yunheng Shen, Huazhang An, Tiejun Li, Honglin Li, Weidong Zhang
AIMS: Oxidative stress is considered the major cause of tissue injury after cerebral ischemia. The nuclear factor erythroid 2-related factor 2 (Nrf2) pathway is one of the most important defensive mechanisms against oxidative stresses and has been confirmed as a target for stroke treatment. Thus, we desired to find new Nrf2 activators and test their neuronal protective activity both in vivo and in vitro. RESULTS: The herb-derived compound Britanin is a potent inducer of the Nrf2 system...
February 10, 2017: Antioxidants & Redox Signaling
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