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https://www.readbyqxmd.com/read/28515017/fatty-acid-binding-protein3-expression-in-bewo-cells-a-human-placental-choriocarcinoma-cell-line
#1
Claire Leroy, Kari Anne Risan Tobin, Sanjay Basak, Anne Cathrine Staff, Asim K Duttaroy
Cellular uptake of long chain fatty acids in human placental trophoblasts is thought to be mediated by several membrane- and cytoplasmic fatty acid-binding proteins (FABP). FABP3 was shown to be involved in long chain polyunsaturated fatty acids (LCPUFA) uptake in human trophoblastic choriocarcinoma cells, BeWo as the uptake of arachidonic acid,20:4n-6 (ARA) was decreased in FABP3-knockdown BeWo cells. However, the regulation of expression of FABP3 in these cells is not yet well known. The aim of the present study was to examine the FABP3 expression by LCPUFAs, insulin and LXR agonists in BeWo cells...
May 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28508927/tumor-lxr-expression-is-a-prognostic-marker-for-patients-with-hepatocellular-carcinoma
#2
Houyong Long, Xingjun Guo, Shen Qiao, Qingxing Huang
Liver X receptor (LXR) activation exerts an anti-tumor effect. However, whether the tumor LXR expression has prognostic significance in hepatocellular carcinoma (HCC) patient has not been addressed yet. Primary HCC and the adjacent non-tumor tissues were obtained from 169 patients who underwent routine curative surgical treatment. All patients were followed for prognosis analyses. Tumor LXR was detected by immunohistochemical analysis. In in vitro study, several HCC cell lines were cultured for cellular protein detection of LXR and other cytokines, including nuclear factor kappa (NFκB), Matrix metalloproteinases 2 and 9 (MMP-2 and -9)...
May 16, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28492976/squalene-promotes-cholesterol-homeostasis-in-macrophage-and-hepatocyte-cells-via-activation-of-liver-x-receptor-lxr-%C3%AE-and-%C3%AE
#3
Hoang Thi Minh Hien, Nguyen Cam Ha, Le Thi Thom, Dang Diem Hong
OBJECTIVE: To examine the effect of squalene on liver X receptors (LXRs) that regulate target genes associated with reverse cholesterol transport and thus control whole-body cholesterol homeostasis. RESULTS: To examine the effect of squalene on liver X receptors (LXRs) that regulate target genes associated with reverse cholesterol transport and thus control whole-body cholesterol homeostasis. Squalene significantly stimulated the transactivation of liver X receptor modulator LXRα and LXRβ...
May 10, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28488421/retinoic-acid-modulates-lipid-accumulation-glucose-concentration-dependently-through-inverse-regulation-of-srebp-1-expression-in-3t3l1-adipocytes
#4
Mabrouk Attia Abd Eldaim, Shinya Matsuoka, Yuko Okamatsu-Ogura, Akihiro Kamikawa, Mohamed Mohamed Ahmed, Akira Terao, Kei-Ichi Nakajima, Kazuhiro Kimura
It is well known that retinoic acid (RA) suppresses adipogenesis, although there are some contradicting reports. In this study, we examined the effect of extracellular glucose on RA-induced suppression of adipogenesis in 3T3L1 cell culture. When the cells were cultured in normal glucose medium (NG), the addition of RA suppressed lipid accumulation. However, when cultured in high glucose medium (HG), addition of RA to the cells enhanced lipid accumulation. These changes were accompanied by parallel alterations in fatty acid synthase (FAS) and sterol regulatory element-binding protein (SREBP)-1 gene expression...
May 10, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28483571/sinigrin-attenuates-the-progression-of-atherosclerosis-in-apoe-mice-fed-a-high-cholesterol-diet-potentially-by-inhibiting-vcam-1-expression
#5
Yeon Jeong Jang, Bongkyun Park, Hee-Weon Lee, Hye Jin Park, Hyun Jung Koo, Byung Oh Kim, Eun-Hwa Sohn, Sung Hee Um, Suhkneung Pyo
Atherosclerosis is a complex inflammatory disease associated with elevated levels of atherogenic molecules for leukocyte recruitment. Sinigrin (2-propenylglucosinolate) is found mainly in broccoli, brussels sprouts, and black mustard seeds. Recently, sinigrin has received attention for its role in disease prevention and health promotion. In this study, we examined the effect of sinigrin on development of atherosclerosis in ApoE(-/-) mice and the expression of adhesion molecules in vascular smooth muscle cells (VSMCs)...
May 5, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28480221/liver-x-receptor-agonist-to901317-attenuates-paraquat-induced-acute-lung-injury-through-inhibition-of-nf-%C3%AE%C2%BAb-and-jnk-p38-mapk-signal-pathways
#6
Xiao Hu, Haitao Shen, Yu Wang, Min Zhao
Paraquat (PQ) is a widely used herbicide with extremely high poisoning mortality mostly from acute lung injury (ALI) or progressive pulmonary fibrosis. Toxicity mechanisms remain unclear, but a redox cycling process that generates reactive oxygen species (ROS) is involved, as are inflammation and cell apoptosis. We established an ALI mouse model by intraperitoneal injection of PQ (28 mg/kg) and then investigated the effects of a potent liver X receptor (LXR) agonist, TO901317 (5 or 20 mg/kg), injected intraperitoneally 30 min after PQ administration...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28472871/icam-1-targeted-liposomes-loaded-with-liver-x-receptor-agonists-suppress-pdgf-induced-proliferation-of-vascular-smooth-muscle-cells
#7
Xu Huang, Meng-Qi Xu, Wei Zhang, Sai Ma, Weisheng Guo, Yabin Wang, Yan Zhang, Tiantian Gou, Yundai Chen, Xing-Jie Liang, Feng Cao
The proliferation of vascular smooth muscle cells (VSMCs) is one of the key events during the progress of atherosclerosis. The activated liver X receptor (LXR) signalling pathway is demonstrated to inhibit platelet-derived growth factor BB (PDGF-BB)-induced VSMC proliferation. Notably, following PDGF-BB stimulation, the expression of intercellular adhesion molecule-1 (ICAM-1) by VSMCs increases significantly. In this study, anti-ICAM-1 antibody-conjugated liposomes were fabricated for targeted delivery of a water-insoluble LXR agonist (T0901317) to inhibit VSMC proliferation...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28471330/characterization-and-gene-cloning-of-l-xylulose-reductase-involved-in-l-arabinose-catabolism-from-the-pentose-fermenting-fungus-rhizomucor-pusillus
#8
Shino Yamasaki-Yashiki, Hidenobu Komeda, Kazuhiro Hoshino, Yasuhisa Asano
l-Xylulose reductase (LXR) catalyzes the reduction of l-xylulose to xylitol in the fungal l-arabinose catabolic pathway. LXR (RpLXR) was purified from the pentose-fermenting zygomycetous fungus Rhizomucor pusillus NBRC 4578. The native RpLXR is a homotetramer composed of 29 kDa subunits and preferred NADPH as a coenzyme. The Km values were 8.71 mM for l-xylulose and 3.89 mM for dihydroxyacetone. The lxr3 (Rplxr3) gene encoding RpLXR consists of 792 bp and encodes a putative 263 amino acid protein (Mr = 28,341)...
May 4, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28464824/growth-and-stress-response-mechanisms-underlying-post-feeding-regenerative-organ-growth-in-the-burmese-python
#9
Audra L Andrew, Blair W Perry, Daren C Card, Drew R Schield, Robert P Ruggiero, Suzanne E McGaugh, Amit Choudhary, Stephen M Secor, Todd A Castoe
BACKGROUND: Previous studies examining post-feeding organ regeneration in the Burmese python (Python molurus bivittatus) have identified thousands of genes that are significantly differentially regulated during this process. However, substantial gaps remain in our understanding of coherent mechanisms and specific growth pathways that underlie these rapid and extensive shifts in organ form and function. Here we addressed these gaps by comparing gene expression in the Burmese python heart, liver, kidney, and small intestine across pre- and post-feeding time points (fasted, one day post-feeding, and four days post-feeding), and by conducting detailed analyses of molecular pathways and predictions of upstream regulatory molecules across these organ systems...
May 2, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28450824/identification-of-novel-biomarker-and-therapeutic-target-candidates-for-acute-intracerebral-hemorrhage-by-quantitative-plasma-proteomics
#10
Guo-Chun Li, Lina Zhang, Ming Yu, Haiyu Jia, Ting Tian, Junqin Wang, Fuqiang Wang, Ling Zhou
BACKGROUND: The systematic mechanisms of acute intracerebral hemorrhage are still unknown and unverified, although many recent researches have indicated the secondary insults. This study was aimed to disclose the pathological mechanism and identify novel biomarker and therapeutic target candidates by plasma proteome. METHODS: Patients with AICH (n = 8) who demographically matched healthy controls (n = 4) were prospectively enrolled, and their plasma samples were obtained...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28450823/proteomic-profiling-of-human-intraschisis-cavity-fluid
#11
Dhandayuthapani Sudha, Mahdokht Kohansal-Nodehi, Purnima Kovuri, Srikanth Srinivas Manda, Srividya Neriyanuri, Lingam Gopal, Pramod Bhende, Subbulakshmi Chidambaram, Jayamuruga Pandian Arunachalam
BACKGROUND: X-linked retinoschisis (XLRS) is a vitreoretinal degenerative disorder causing vision deterioration, due to structural defects in retina. The hallmark of this disease includes radial streaks arising from the fovea and splitting of inner retinal layers (schisis). Although these retinal changes are attributed to mutations in the retinoschisin gene, schisis is also observed in patients who do not carry mutations. In addition, the origin of intraschisis fluid, the triggering point of schisis formation and its progression are largely unknown still...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28449117/the-lxr-ligand-t0901317-acutely-inhibits-insulin-secretion-by-affecting-mitochondrial-metabolism
#12
Jonas Maczewsky, Jelena Sikimic, Cita Bauer, Peter Krippeit-Drews, Carmen Wolke, Uwe Lendeckel, Winfried Barthlen, Gisela Drews
The role of liver X receptor (LXR) in pancreatic beta-cell physiology and pathophysiology is still unclear. It has been postulated that chronic LXR activation in beta-cells induces lipotoxicity, a key step in the development of beta-cell dysfunction which accompanies type-2 diabetes mellitus. In most of these studies, the LXR ligand T0901317 has been administered chronically in the µmolar range to study the significance of LXR activation.In the present study, we have evaluated acute effects of T0901317 on stimulus-secretion coupling of beta-cells...
April 25, 2017: Endocrinology
https://www.readbyqxmd.com/read/28441764/altered-adipogenesis-in-zebrafish-larvae-following-high-fat-diet-and-chemical-exposure-is-visualised-by-stimulated-raman-scattering-microscopy
#13
Marjo J den Broeder, Miriam J B Moester, Jorke H Kamstra, Peter H Cenijn, Valentina Davidoiu, Leonie M Kamminga, Freek Ariese, Johannes F de Boer, Juliette Legler
Early life stage exposure to environmental chemicals may play a role in obesity by altering adipogenesis; however, robust in vivo methods to quantify these effects are lacking. The goal of this study was to analyze the effects of developmental exposure to chemicals on adipogenesis in the zebrafish (Danio rerio). We used label-free Stimulated Raman Scattering (SRS) microscopy for the first time to image zebrafish adipogenesis at 15 days post fertilization (dpf) and compared standard feed conditions (StF) to a high fat diet (HFD) or high glucose diet (HGD)...
April 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28427397/hvc1-ameliorates-hyperlipidemia-and-inflammation-in-ldlr-mice
#14
Se-Yun Cheon, Kyung-Sook Chung, Kyung-Jin Lee, Ho-Young Choi, In-Hye Ham, Dong-Hoon Jung, Yun-Yeop Cha, Hyo-Jin An
BACKGROUND: HVC1 consists of Coptidis Rhizoma (dried rhizome of Coptischinensis), Scutellariae Radix (root of Scutellariabaicalensis), Rhei Rhizoma (rhizome of Rheum officinale), and Pruni Cortex (cortex of Prunusyedoensis Matsum). Although the components are known to be effective in various conditions such as inflammation, hypertension, and hypercholesterolemia, there are no reports of the molecular mechanism of its hypolipidemic effects. METHODS: We investigated the hypolipidemic effect of HVC1 in low-density lipoprotein receptor-deficient (LDLR(-/-)) mice fed a high-cholesterol diet for 13 weeks...
April 20, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28420650/changes-in-lxr-signaling-influence-early-pregnancy-lipogenesis-and-protect-against-dysregulated-fetoplacental-lipid-homeostasis
#15
Vanya Nikolova, Georgia Papacleovoulou, Elena Bellafante, Luiza Borges Manna, Eugene Jansen, Silvère Baron, Shadi Abu-Hayyeh, Malcolm G Parker, Catherine Williamson
Human pregnancy is associated with enhanced de novo lipogenesis in the early stages followed by hyperlipidemia during advanced gestation. Liver X receptors (LXRs) are oxysterol-activated nuclear receptors which stimulate de novo lipogenesis and also promote the efflux of cholesterol from extrahepatic tissues followed by its transport back to the liver for biliary excretion. Although LXR is recognized as a master regulator of triglyceride and cholesterol homeostasis it is unknown whether it facilitates the gestational adaptations in lipid metabolism...
April 18, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28414139/ligand-dependent-and-independent-regulation-of-human-hepatic-sphingomyelin-phosphodiesterase-acid-like-3a-expression-by-pregnane-x-receptor-and-crosstalk-with-liver-x-receptor
#16
Judith Jeske, Andreas Bitter, Wolfgang E Thasler, Thomas S Weiss, Matthias Schwab, Oliver Burk
Pregnane X receptor (PXR) mainly regulates xenobiotic metabolism and detoxification. Additionally, it exerts pleiotropic effects on liver physiology, which in large parts depend on transrepression of other liver-enriched transcription factors. Based on the hypothesis that lower expression levels of PXR may reduce the extent of this inhibition, an exploratory genome-wide transcriptomic profiling was performed using HepG2 cell clones with different expression levels of PXR. This screen and confirmatory real-time RT-PCR identified sphingomyelin phosphodiesterase acid-like (SMPDL) 3A, a novel nucleotide phosphodiesterase and phosphoramidase, as being up-regulated by PXR-deficiency...
April 13, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28396714/cinnamon-polyphenol-extract-inhibits-hyperlipidemia-and-inflammation-by-modulation-of-transcription-factors-in-high-fat-diet-fed-rats
#17
Zeynep Tuzcu, Cemal Orhan, Nurhan Sahin, Vijaya Juturu, Kazim Sahin
We evaluated the effects of cinnamon polyphenol extract on hepatic transcription factors expressions including SREBP-1c and LXR-α in rats fed high fat diet (HFD). Twenty-eight Wistar rats were allocated into four groups: (i) normal control: animals fed with normal chow; (ii) cinnamon: animals supplemented with cinnamon polyphenol; (iii) HFD: animals fed a high-fat diet; and (iv) HFD + cinnamon: animals fed a high-fat diet and treated with cinnamon polyphenol. Obesity was linked to hyperglycemia, hyperlipidemia, and oxidative stress as imitated by elevated serum glucose, lipid profile, and serum and liver malondialdehyde (MDA) concentrations...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28394474/proteomic-identification-of-rainbow-trout-blood-plasma-proteins-and-their-relationship-to-seminal-plasma-proteins
#18
Joanna Nynca, G J Arnold, T Fröhlich, A Ciereszko
The characterization of fish blood proteomes is important for comparative studies of seminal and blood proteins as well as for the analysis of fish immune mechanisms and pathways. In this study LC-MS/MS and 2D DIGE were applied to compare rainbow trout seminal (SP) and blood plasma (BP) proteomes. The 54 differentially abundant proteins identified in SP are involved in a variety of signalling pathways, including protein ubiquitination, liver X receptor/retinoid X receptor (LXR/RXR) and farnesoid X receptor (FXR)/RXR activation, cell cycle and acute phase signalling...
April 10, 2017: Proteomics
https://www.readbyqxmd.com/read/28369131/liver-x-receptors-activation-through-to901317-binding-reduces-neuroinflammation-in-parkinson-s-disease
#19
Irene Paterniti, Michela Campolo, Rosalba Siracusa, Marika Cordaro, Rosanna Di Paola, Vittorio Calabrese, Michele Navarra, Salvatore Cuzzocrea, Emanuela Esposito
Parkinson's disease (PD) is a neurodegenerative disease in which degeneration of nigrostriatal neurons and inflammation are key players. The aim of our study was to analyze the function of LXRs in neurodegenerative diseases as PD using in vivo, ex vivo and in vitro models of PD; for this purpose, we observed the effects of the LXR agonist, TO901317, in neuroinflammatory pathway related to PD. We performed an in vivo model of PD using the neurotoxin 1-methyl-4-phenyl-1, 2,3,6-tetrahydropyridine (MPTP) and our results clearly showed that TO901317 administration reduces all of the inflammatory markers involved in PD such as iNOS and COX2, IκB-α and NF-κB...
2017: PloS One
https://www.readbyqxmd.com/read/28367923/hyperglycemia-suppresses-rankl-induced-osteoclast-differentiation-through-lxr%C3%AE-expression-in-raw264-7-cells
#20
Teruyoshi Tanaka, Yuichiro Takei, Nobuhiro Zaima, Tatsuya Moriyama, Dai Yamanouchi
There have been reports that hyperglycemia suppresses osteoclast (OCL) differentiation, although the underlying mechanism is poorly understood. Here we demonstrated that high glucose suppresses OCL differentiation through activation of liver X receptor (LXR) β, a recently reported glucose-sensing nuclear receptor. The effect of hyperglycemia on osteoclastogenesis was tested in RAW264.7 cells, a murine macrophage cell line. Cells were treated with receptor activator of NF-κB ligand (RANKL) under normoglycemic (5...
2017: Journal of Nutritional Science and Vitaminology
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