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https://www.readbyqxmd.com/read/28549240/dietary-salecan-reverts-partially-the-metabolic-gene-expressions-and-nmr-based-metabolomic-profiles-from-high-fat-diet-induced-obese-rats
#1
Qi Sun, Minghui Li, Xiao Yang, Xi Xu, Junsong Wang, Jianfa Zhang
Previous studies suggest that dietary salecan (a water-soluble β-glucan) effectively reduces high-fat-diet-induced adiposity through disturbing bile-acid-promoted emulsification in mice. However, the effects of salecan on metabolic genes and metabolites involved in lipid accumulation are mostly unknown. Here, we confirmed that dietary 3% and 6% salecan for 4 weeks markedly decreased fat accumulation in liver and adipose tissue in high-fat-diet rats, displaying a decrease in mRNA levels of SREBP1-C, FAS, SCD1 and ACC1 involved in de novo lipogenesis and a reduction of levels of GPAT1, DGAT1 and DGAT2 related to triglyceride synthesis...
May 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28545102/effect-of-dietary-restriction-and-subsequent-re-alimentation-on-the-transcriptional-profile-of-bovine-ruminal-epithelium
#2
Kate Keogh, Sinead M Waters, Paul Cormican, Alan K Kelly, Emma O'Shea, David A Kenny
Compensatory growth (CG) is utilised worldwide in beef production systems as a management approach to reduce feed costs. However the underlying biology regulating the expression of CG remains to be fully elucidated. The objective of this study was to examine the effect of dietary restriction and subsequent re-alimentation induced CG on the global gene expression profile of ruminal epithelial papillae. Holstein Friesian bulls (n = 60) were assigned to one of two groups: restricted feed allowance (RES; n = 30) for 125 days (Period 1) followed by ad libitum access to feed for 55 days (Period 2) or (ii) ad libitum access to feed throughout (ADLIB; n = 30)...
2017: PloS One
https://www.readbyqxmd.com/read/28545044/differentiation-of-spontaneously-contracting-cardiomyocytes-from-non-virally-reprogrammed-human-amniotic-fluid-stem-cells
#3
Aaron J Velasquez-Mao, Christopher J M Tsao, Madeline N Monroe, Xavier Legras, Beatrice Bissig-Choisat, Karl-Dimiter Bissig, Rodrigo Ruano, Jeffrey G Jacot
Congenital heart defects are the most common birth defect. The limiting factor in tissue engineering repair strategies is an autologous source of functional cardiomyocytes. Amniotic fluid contains an ideal cell source for prenatal harvest and use in correction of congenital heart defects. This study aims to investigate the potential of amniotic fluid-derived stem cells (AFSC) to undergo non-viral reprogramming into induced pluripotent stem cells (iPSC) followed by growth-factor-free differentiation into functional cardiomyocytes...
2017: PloS One
https://www.readbyqxmd.com/read/28543390/the-effect-of-ebv-on-wif1-nlk-and-apc-gene-methylation-and-expression-in-gastric-carcinoma-and-nasopharyngeal-cancer
#4
Zhenzhen Zhao, Wen Liu, Jincheng Liu, Jiayi Wang, Bing Luo
Epstein-Barr virus (EBV) is an important DNA tumor virus that is associated with approximately 10% of gastric carcinomas and 99% of nasopharyngeal cancers. DNA methylation and microRNAs (miRNAs) are the most studied epigenetic mechanisms that can prompt disease susceptibility. This study aimed to detect the effect of EBV on Wnt inhibitory factor 1 (WIF1), Nemo-like kinase (NLK), and adenomatous polyposis coli (APC) gene methylation and expression in gastric carcinoma and nasopharyngeal cancer. METHODS: The WIF1, NLK, and APC gene mRNA expression levels were measured by real-time quantitative RT-PCR in four EBV-positive cell lines and four EBV-negative cell lines...
May 23, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28542609/potent-and-selective-inhibition-of-pathogenic-viruses-by-engineered-ubiquitin-variants
#5
Wei Zhang, Ben A Bailey-Elkin, Robert C M Knaap, Baldeep Khare, Tim J Dalebout, Garrett G Johnson, Puck B van Kasteren, Nigel J McLeish, Jun Gu, Wenguang He, Marjolein Kikkert, Brian L Mark, Sachdev S Sidhu
The recent Middle East respiratory syndrome coronavirus (MERS-CoV), Ebola and Zika virus outbreaks exemplify the continued threat of (re-)emerging viruses to human health, and our inability to rapidly develop effective therapeutic countermeasures. Many viruses, including MERS-CoV and the Crimean-Congo hemorrhagic fever virus (CCHFV) encode deubiquitinating (DUB) enzymes that are critical for viral replication and pathogenicity. They bind and remove ubiquitin (Ub) and interferon stimulated gene 15 (ISG15) from cellular proteins to suppress host antiviral innate immune responses...
May 18, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28539647/physiological-concentrations-of-soluble-uric-acid-are-chondroprotective-and-anti-inflammatory
#6
Jenn-Haung Lai, Shue-Fen Luo, Li-Feng Hung, Chuan-Yueh Huang, Shiu-Bii Lien, Leou-Chyr Lin, Feng-Cheng Liu, B Linju Yen, Ling-Jun Ho
High uric acid levels are a risk factor for cardiovascular disorders and gout; however, the role of physiological concentrations of soluble uric acid (sUA) is poorly understood. This study aimed to clarify the effects of sUA in joint inflammation. Both cell cultures of primary porcine chondrocytes and mice with collagen-induced arthritis (CIA) were examined. We showed that sUA inhibited TNF-α- and interleukin (IL)-1β-induced inducible nitric oxide synthase, cyclooxygenase-2 and matrix metalloproteinase (MMP)-13 expression...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28538144/probing-the-potential-role-of-non-b-dna-structures-at-yeast-meiosis-specific-dna-double-strand-breaks
#7
Rucha Kshirsagar, Krishnendu Khan, Mamata V Joshi, Ramakrishna V Hosur, K Muniyappa
A plethora of evidence suggests that different types of DNA quadruplexes are widely present in the genome of all organisms. The existence of a growing number of proteins that selectively bind and/or process these structures underscores their biological relevance. Moreover, G-quadruplex DNA has been implicated in the alignment of four sister chromatids by forming parallel guanine quadruplexes during meiosis; however, the underlying mechanism is not well defined. Here we show that a G/C-rich motif associated with a meiosis-specific DNA double-strand break (DSB) in Saccharomyces cerevisiae folds into G-quadruplex, and the C-rich sequence complementary to the G-rich sequence forms an i-motif...
May 23, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28536447/effects-of-hmasp-2-on-the-formation-of-bcg-infection-induced-granuloma-in-the-lungs-of-balb-c-mice
#8
Xiaoying Xu, Xiaoling Lu, Xingfang Dong, Yanping Luo, Qian Wang, Xun Liu, Jie Fu, Yuan Zhang, Bingdong Zhu, Xingming Ma
Tuberculosis, caused by Mycobacterium tuberculosis, affects the functions of the lung and causes high morbidity and mortality rates worldwide. MASP-2 is an executioner enzyme, which plays an essential role in the activation of lectin pathway. In our previous studies, the MASP-2 played a dual role in promoting the progress of lesions in BCG-infected rabbit skin models. However, the really effects of MASP-2 on tuberculosis are unknown. The aim of this study was to investigate the effects of MASP-2 in granuloma formation with BCG-infected mice...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28533087/a-rele-pare-superfamily-toxin-in-vibrio-parahaemolyticus-has-dna-nicking-endonuclease-activity
#9
Jing Zhang, Hironori Ito, Madoka Hino, Makoto Kimura
Type II toxins in toxin-antitoxin (TA) systems fold into a similar fold and belong to the RelE/ParE superfamily. However, they display two distinct biochemical activities: RelE toxins are mRNA interferases, while ParE toxins are DNA gyrase (Gyr) inhibitors. Previously, we found a TA system, vp1842/vp1843, on the Vibrio parahaemolyticus genome whose toxin Vp1843 belongs to the RelE/ParE toxin superfamily. Vp1843, unlike RelE toxins, has neither protein synthesis inhibitory activity nor ribonuclease activity...
May 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28532517/expression-of-cocaine-and-amphetamine-regulated-transcript-cart-in-hen-ovary
#10
Pengfei Li, Xuejing Yu, Jianshan Xie, Xiaolei Yao, Wenzhong Liu, Jianbo Yao, Zhiwei Zhu, Lihua Lyu
BACKGROUND: Cocaine- and amphetamine-regulated transcript (CART), discovered initially by via differential display RT-PCR analysis of brains of rats administered cocaine, is expressed mainly in central nervous system or neuronal origin cells, and is involved in a wide range of behaviors, such as regulation of food intake, energy homeostasis, and reproduction. The hens egg-laying rate mainly depends on the developmental status of follicles, expression of CART have not been identified from hen follicles, the regulatory mechanisms of CART biological activities are still unknown...
May 22, 2017: Biological Research
https://www.readbyqxmd.com/read/28531964/non-electron-transfer-chain-mitochondrial-defects-differently-regulate-hif-1%C3%AE-degradation-and-transcription
#11
Antonina N Shvetsova, Daniela Mennerich, Juha M Kerätär, J Kalervo Hiltunen, Thomas Kietzmann
Mitochondria are the main consumers of molecular O2 in a cell as well as an abundant source of reactive oxygen species (ROS). Both, molecular oxygen and ROS are powerful regulators of the hypoxia-inducible factor-1α-subunit (HIF-α). While a number of mechanisms in the oxygen-dependent HIF-α regulation are quite well known, the view with respect to mitochondria is less clear. Several approaches using pharmacological or genetic tools targeting the mitochondrial electron transport chain (ETC) indicated that ROS, mainly formed at the Rieske cluster of complex III of the ETC, are drivers of HIF-1α activation...
May 8, 2017: Redox Biology
https://www.readbyqxmd.com/read/28529967/data-in-support-of-a-harmine-derived-beta-carboline-in-vitro-effects-in-cancer-cells-through-protein-synthesis
#12
Annelise Carvalho, Jennifer Chu, Céline Meinguet, Robert Kiss, Guy Vandenbussche, Bernard Masereel, Johan Wouters, Alexander Kornienko, Jerry Pelletier, Véronique Mathieu
A harmine-derived beta-carboline, CM16, inhibits cancer cells growth through its effects on protein synthesis, as described in "A harmine-derived beta-carboline displays anti-cancer effects in vitro by targeting protein synthesis" (Carvalho et al., 2017)[1]. This data article provides accompanying data on CM16 cytostatic evaluation in cancer cells as well as data related to its effects on transcription and translation. After confirming the cytostatic effect of CM16, we investigated its ability to arrest the cell cycle in the glioma Hs683 and SKMEL-28 melanoma cell lines but no modification was evidenced...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28529485/hydrostatin-sn1-a-sea-snake-derived-bioactive-peptide-reduces-inflammation-in-a-mouse-model-of-acute-lung-injury
#13
Guosheng Wu, Junjie Wang, Pengfei Luo, An Li, Song Tian, Hailong Jiang, Yongjun Zheng, Feng Zhu, Yiming Lu, Zhaofan Xia
Snake venom has been used for centuries as a traditional Chinese medicine. Hydrostatin-SN1 (H-SN1), a bioactive peptide extracted from the Hydrophis cyanocinctus venom gland T7 phage display library, was reported to have the ability to reduce inflammation in a dextran sulfate sodium-induced murine colitis model. In this study, we sought to investigate the inhibitory potential of H-SN1 on inflammation in a murine model of lipopolysaccharide (LPS)-induced acute lung injury (ALI), and elucidate the anti-inflammatory mechanism in LPS-stimulated RAW 264...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28529456/ethyl-acetate-fraction-of-huogu-formula-inhibits-adipogenic-differentiation-of-bone-marrow-stromal-cells-via-the-bmp-and-wnt-signaling-pathways
#14
Xiangying Kong, Xiaomin Li, Cun Zhang, Liuluan Zhu, Chunfang Liu, Qingxia Qin, Cuiling Liu, Qianqian Wang, Jia Zhu, Xuan Wu, Hongye Wan, Weiheng Chen, Na Lin
Elevated adipogenesis of bone marrow stromal cells (BMSCs) is closely associated with non-traumatic osteonecrosis of femoral head (ONFH). Our previous studies have shown that Huogu (HG) formula was effective both in clinic experience and experimental ONFH. How HG impacts the differentiation of BMSCs and what is the underlying molecular mechanism remain largely unknown. Our results showed that ethyl acetate extract of HG (HGE) significantly decreased the adipocyte differentiation as determined by oil red staining, while slightly increased the ALP activity...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28528274/angiopoietin-like-8-angptl8-controls-adipocyte-lipolysis-and-phospholipid-composition
#15
Raghavendra Mysore, Gerhard Liebisch, You Zhou, Vesa M Olkkonen, P A Nidhina Haridas
Angiopoietin-like 8 (Angptl8) inhibits lipolysis in the circulation together with Angplt3 and controls post-prandial fat storage in white adipose tissue (WAT). It is strongly induced by insulin in vivo in WAT and in vitro in adipocytes. In this study we addressed the function of Angptl8 in adipocytes by its stable lentivirus-mediated knock-down in 3T3-L1 cells, followed by analyses of triglyceride (TG) storage, lipid droplet (LD) morphology, the cellular lipidome, lipolysis, and gene expression. Depletion of Angptl8 did not drastically affect the adipocytic differentiation of 3T3-L1 cells but resulted in a moderate (18-19%) reduction of stored TGs...
May 17, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28527954/sex-differences-in-the-effect-of-chronic-mild-stress-on-mouse-prefrontal-cortical-bdnf-levels-a-role-of-major-ovarian-hormones
#16
Bhanu Chandra Karisetty, Pranav Chintamani Joshi, Arvind Kumar, Sumana Chakravarty
Depression induced by stress is affected by sex, age and hormonal status of the animal and also by duration and type of the stressors. Moreover, higher prevalence of depression and comorbidities in women than men implies the need to include the sex variable in studies on animal models of depression. The present study was therefore initiated to evaluate the effect of sex and ovarian hormones on depression-like phenotypes in mice exposed to a 21-day Chronic Variable Mild Stress (CVMS) paradigm. Adult male, intact female and, ovariectomized (OVX) female mice exposed to CVMS displayed despair behavior, a depression-like phenotype, in all the groups...
May 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28526353/stretch-activated-two-pore-domain-k2p-potassium-channels-in-the-heart-focus-on-atrial-fibrillation-and-heart-failure
#17
REVIEW
Constanze Schmidt, Felix Wiedmann, Stefan M Kallenberger, Antonius Ratte, Jan S Schulte, Beatrix Scholz, Frank Ulrich Müller, Niels Voigt, Maria-Patapia Zafeiriou, Joachim R Ehrlich, Ursula Tochtermann, Gábor Veres, Arjang Ruhparwar, Matthias Karck, Hugo A Katus, Dierk Thomas
Two-pore-domain potassium (K2P) channels modulate cellular excitability. The significance of stretch-activated cardiac K2P channels (K2P2.1, TREK-1, KCNK2; K2P4.1, TRAAK, KCNK4; K2P10.1, TREK-2, KCNK10) in heart disease has not been elucidated in detail. The aim of this work was to assess expression and remodeling of mechanosensitive K2P channels in atrial fibrillation (AF) and heart failure (HF) patients in comparison to murine models. Cardiac K2P channel levels were quantified in atrial (A) and ventricular (V) tissue obtained from patients undergoing open heart surgery...
May 16, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28526300/embryonic-ap1-transcription-factor-deficiency-causes-a-collodion-baby-like-phenotype
#18
Christina A Young, Richard L Eckert, Gautam Adhikary, Debra Crumrine, Peter M Elias, Miroslav Blumenberg, Ellen A Rorke
AP1 transcription factors are important controllers of gene expression in the epidermis, and altered AP1 factor function can perturb keratinocyte proliferation and differentiation. However, our understanding of how AP1 signaling changes may underlie or exacerbate skin disease is limited. We have shown that inhibiting AP1 factor function in suprabasal adult epidermis leads to reduced filaggrin levels and to a phenotype that resembles the genetic disorder, ichthyosis vulgaris. We now show that inhibiting AP1 factor function during development in embryonic epidermis produces marked phenotypic changes including reduced filaggrin mRNA and protein levels, compromised barrier function, marked ultrastructural change and enhanced dehydration susceptibility that resembles the phenotype observed in the flaky tail mouse, a model for ichthyosis vulgaris...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28525378/irf5-is-elevated-in-childhood-onset-sle-and-regulated-by-histone-acetyltransferase-and-histone-deacetylase-inhibitors
#19
Jin Shu, Ling Li, Lan-Bo Zhou, Jun Qian, Zhi-Dan Fan, Li-Li Zhuang, Lu-Lu Wang, Rui Jin, Hai-Guo Yu, Guo-Ping Zhou
Interferon regulatory factor 5 (IRF5) plays a critical role in the induction of type I interferon, proinflammatory cytokines and chemokines, and participates in the pathogenesis of autoimmune diseases such as systemic lupus erythematosus (SLE). However, the relationship between IRF5 and childhood-onset SLE remains elusive. In the present study, we demonstrated that levels of mRNA expression of IRF5, IFN-α, and Sp1 were significantly increased in childhood-onset SLE, as seen on quantitative real-time PCR, and the expression of Sp1 and IFN-α was positively correlated with IRF5...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28524836/effect-of-histone-deacetylase-inhibition-on-the-expression-of-multidrug-resistance-associated-protein-2-in-a-human-placental-trophoblast-cell-line
#20
Hong-Yu Duan, Dan Ma, Kai-Yu Zhou, Tao Wang, Yi Zhang, Yi-Fei Li, Jin-Lin Wu, Yi-Min Hua, Chuan Wang
BACKGROUND: Placental multidrug resistance-associated protein 2 (MRP2), encoded by ABCC2 gene in human, plays a significant role in regulating drugs' transplacental transfer rates. Studies on placental MRP2 regulation could provide more therapeutic targets for individualized and safe pharmacotherapy during pregnancy. Currently, the roles of epigenetic mechanisms in regulating placental drug transporters are still unclear. This study aimed to investigate the effect of histone deacetylases (HDACs) inhibition on MRP2 expression in the placental trophoblast cell line and to explore whether HDAC1/2/3 are preliminarily involved in this process...
June 5, 2017: Chinese Medical Journal
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