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https://www.readbyqxmd.com/read/28642153/characterization-of-the-differential-coregulator-binding-signatures-of-the-retinoic-acid-receptor-subtypes-upon-ant-agonist-action
#1
Ignacio Miro Estruch, Diana Melchers, René Houtman, Laura H J de Haan, John P Groten, Jochem Louisse, Ivonne M C M Rietjens
Retinoic Acid Receptor alpha (RARα/NR1B1), Retinoic Acid Receptor beta (RARβ/NR1B2) and Retinoic Acid Receptor gamma (RARγ/NR1B3) are transcription factors regulating gene expression in response to retinoids. Within the RAR genomic pathways, binding of RARs to coregulators is a key intermediate regulatory phase. However, ligand-dependent interactions between the wide variety of coregulators that may be present in a cell and the different RAR subtypes are largely unknown. The aim of this study is to characterize the coregulator binding profiles of RARs in the presence of the pan-agonist all-trans-Retinoic Acid (AtRA); the subtype-selective agonists Am80 (RARα), CD2314 (RARβ) and BMS961 (RARγ); and the antagonist Ro415253...
June 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28635660/diverse-regulation-of-vitamin-d-receptor-gene-expression-by-1-25-dihydroxyvitamin-d-and-atra-in-murine-and-human-blood-cells-at-early-stages-of-their-differentiation
#2
Sylwia Janik, Urszula Nowak, Agnieszka Łaszkiewicz, Anastasiia Satyr, Michał Majkowski, Aleksandra Marchwicka, Łukasz Śnieżewski, Klaudia Berkowska, Marian Gabryś, Małgorzata Cebrat, Ewa Marcinkowska
Vitamin D receptor (VDR) is present in multiple blood cells, and the hormonal form of vitamin D, 1,25-dihydroxyvitamin D (1,25D) is essential for the proper functioning of the immune system. The role of retinoic acid receptor α (RARα) in hematopoiesis is very important, as the fusion of RARα gene with PML gene initiates acute promyelocytic leukemia where differentiation of the myeloid lineage is blocked, followed by an uncontrolled proliferation of leukemic blasts. RARα takes part in regulation of VDR transcription, and unliganded RARα acts as a transcriptional repressor to VDR gene in acute myeloid leukemia (AML) cells...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28627588/il%C3%A2-22-expression-is-increased-variedly-in-the-initial-phase-onset-and-chronic-phase-of-a-pristane%C3%A2-induced-arthritis-rat-model
#3
Weikun Hou, Bo Wang, Yan Zhou, Ke Xu, Liesu Meng, Wenhua Zhu, Congshan Jiang, Peng Xu, Shemin Lu
The aim of the present study was to investigate the expression pattern of T helper (Th) 17 and Th22 cell-related factors in a pristane‑induced arthritis (PIA) rat model. PIA rats were divided into the initial phase group [day (D) 6 post‑pristane injection], the onset of clinical arthritis group (D12), the acute arthritis group (D26) and the chronic arthritis group (D70). Rats injected with saline alone were used as the control group. The mRNA expression levels of interleukin (IL)‑17A, IL‑17F, interferon (IFN)‑γ, IL‑22, IL‑22 receptor (R) 1, IL‑22 binding protein (BP) and RAR‑related orphan receptor α were examined in the spleen and/or synovium of the various phases of PIA rats by reverse transcription‑quantitative polymerase chain reaction analysis...
June 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28614782/macrophages-are-targets-of-retinoic-acid-signaling-during-the-wound-healing-process-after-thulium-laser-resection-of-the-prostate
#4
Dian-Jun Yu, Xing-Jie Wang, Yun-Feng Shi, Chen-Yi Jiang, Rui-Zhe Zhao, Yi-Ping Zhu, Li Chen, Yuan-Qing Yang, Xiao-Wen Sun, Shu-Jie Xia
BACKGROUND: The wound-healing process is very important for reducing complications after thulium laser resection of the prostate (TmLRP). The retinoic acid (RA) signaling pathway has been well studied in the wound-healing process of the skin and other organs. The goals of this study were to identify the role of RA signaling in the repair of the prostate after TmLRP and to investigate the molecular mechanism of this process. RESULTS: Retinoic acid receptors (RARs) were present in the prostate, and their expression was increased after TmLRP...
May 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/28614094/plasma-renin-activity-to-plasma-aldosterone-concentration-ratio-correlates-with-night-time-and-pulse-pressures-in-essential-hypertensive-patients-treated-with-angiotensin-converting-enzyme-inhibitors-at1-blockers
#5
Francesco Spannella, Federico Giulietti, Paolo Balietti, Elisabetta Borioni, Francesca E Lombardi, Maddalena Ricci, Guido Cocci, Laura Landi, Riccardo Sarzani
OBJECTIVES: Angiotensin-converting enzyme inhibitors (ACE-I) and AT1 blockers (ARB) are commonly used antihypertensive drugs, but several factors may affect their effectiveness. We evaluated the associations between ambulatory blood pressure (BP) monitoring (ABPM) parameters and plasma renin activity (PRA)-to-plasma aldosterone concentration (PAC) ratio (RAR) to test renin-angiotensin-aldosterone system inhibition in essential hypertensive patients treated with ACE-I or ARB for at least 12 months...
June 13, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28607111/a-distinct-inhibitory-function-for-mir-18a-in-th17-cell-differentiation
#6
Misty M Montoya, Julia Maul, Priti B Singh, Heather H Pua, Frank Dahlström, Nanyan Wu, Xiaozhu Huang, K Mark Ansel, Dirk Baumjohann
Th17 cell responses orchestrate immunity against extracellular pathogens but also underlie autoimmune disease pathogenesis. In this study, we uncovered a distinct and critical role for miR-18a in limiting Th17 cell differentiation. miR-18a was the most dynamically upregulated microRNA of the miR-17-92 cluster in activated T cells. miR-18a deficiency enhanced CCR6(+) RAR-related orphan receptor (ROR)γt(+) Th17 cell differentiation in vitro and increased the number of tissue Th17 cells expressing CCR6, RORγt, and IL-17A in airway inflammation models in vivo...
June 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28606645/detection-of-causative-agents-of-tick-borne-rickettsioses-in-western-siberia-russia-identification-of-rickettsia-raoultii-and-rickettsia-sibirica-dna-in-clinical-samples
#7
Igolkina Yana, Krasnova Elena, Rar Vera, Savelieva Mariya, Epikhina Tamara, Tikunov Artem, Khokhlova Natalya, Provorova Veronika, Tikunova Nina
OBJECTIVES: The main causative agent of tick-borne rickettsioses in Siberia is considered to be Rickettsia sibirica; however, only a few cases have been genetically confirmed. Other pathogenic species of Rickettsia have also been detected in ixodid ticks in Western Siberia. The aim of this study was to detect the etiologic agents of tick-borne rickettsioses in Western Siberia and compare their clinical manifestations. METHODS: A total of 273 blood and 44 cerebrospinal fluid (CSF) samples from 273 patients hospitalized owing to tick-transmitted infection in 2016, April-September, were examined for the presence of Rickettsia spp...
June 9, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28589840/characterization-of-a-sea-urchin-iq-motif-containing-protein-d-as-a-coactivator-of-nuclear-receptors
#8
Mi Ae Kim, Young Chang Sohn
Nuclear receptor (NR) interacting proteins, such as coactivators and corepressors, play a crucial role in specifying the transcriptional activity of the receptor. However, little is known about the functional features of the NR coregulators in marine invertebrates. Using the yeast two-hybrid screening method, a sea urchin oocyte cDNA library was screened for proteins that interact with the ligand-binding domain of human RXRα (hRXRα) as the bait protein in the presence of 9-cis retinoic acid. Here, we describe IQ motif containing protein D (IQCD) as an RXR-interacting coactivator...
June 2017: Zoological Science
https://www.readbyqxmd.com/read/28580804/burden-of-antimicrobial-resistance-in-an-era-of-decreasing-susceptibility
#9
Glenn S Tillotson, Stephen H Zinner
Antimicrobial resistance has become a global problem. Many pathogens are becoming multidrug-resistant with the attendant increased risk of failure of standard therapies and the under-recognised outcomes such as increased morbidity, mortality, length of hospitalization and costs of treatment. Areas covered: We undertook a review of the literature using standard search engines including PubMed, Google Scholar, Scopus and internet sources. Key search terms included antimicrobial resistance, antibiotic resistance, bacterial resistance, clinical outcomes, economic consequences, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Streptococcus pneumoniae and Staphylococcus aureus...
June 13, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28571631/maternal-and-fetal-outcomes-of-anticoagulation-in-pregnant-women-with%C3%A2-mechanical-heart%C3%A2-valves
#10
Zachary L Steinberg, Clara P Dominguez-Islas, Catherine M Otto, Karen K Stout, Eric V Krieger
BACKGROUND: Anticoagulation for mechanical heart valves during pregnancy is essential to prevent thromboembolic events. Each regimen has drawbacks with regard to maternal or fetal risk. OBJECTIVES: This meta-analysis sought to estimate and compare the risk of adverse maternal and fetal outcomes in pregnant women with mechanical heart valves who received different methods of anticoagulation. METHODS: Studies were identified using a Medline search including all publications up to June 5, 2016...
June 6, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28566555/cross-linked-matrix-rigidity-and-soluble-retinoids-synergize-in-nuclear-lamina-regulation-of-stem-cell-differentiation
#11
Irena L Ivanovska, Joe Swift, Kyle Spinler, Dave Dingal, Sangkyun Cho, Dennis E Discher
Synergistic cues from extracellular matrix and soluble factors are often obscure in differentiation. Here, the rigidity of crosslinked collagen synergizes with retinoids in the osteogenesis of human marrow mesenchymal stem cells (MSCs). Collagen nano-films serve as a model matrix that MSCs can easily deform unless the film is enzymatically crosslinked, which promotes the spreading of cells and the stiffening of nuclei as both actomyosin assembly and nucleoskeletal lamin-A increase. Expression of lamin-A is known to be controlled by Retinoic Acid Receptor (RAR) transcription factors, but rigid matrix is needed to induce rapid nuclear accumulation of the RARG isoform and subsequent expression of osteogenic markers...
May 31, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28554891/dna-repair-gene-expressions-are-related-to-bone-marrow-cellularity-in-myelodysplastic-syndrome
#12
Howard L Ribeiro, Allan Rodrigo S Maia, Roberta Taiane G de Oliveira, Marília Braga Costa, Izabelle Rocha Farias, Daniela de Paula Borges, Juliana Cordeiro de Sousa, Silvia Maria M Magalhães, Ronald F Pinheiro
OBJECTIVE: To evaluate the expression of genes related to nuclear excision (ERCC8, XPA and XPC), homologous recombination and non-homologous end-joining (ATM, BRCA1, BRCA2 and LIG4) repair mechanisms, using quantitative PCR methodologies, and it relation with bone marrow cellularity in myelodysplastic syndrome (MDS). METHODS AND RESULTS: A total of 51 adult de novo patients with MDS (3 refractory anaemia (RA), 11 refractory anaemia with ringed sideroblasts (RARS), 28 refractory cytopenia with multilineage dysplasia (RCMD), 3 refractory anaemia with excess blasts type I (RAEB-I), 5 refractory anaemia with excess blasts type II (RAEB-II), and 1 chronic myelomonocytic leukaemia (CMML) were evaluated...
May 29, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28552962/retinoic-acid-receptor-gamma-impacts-cellular-adhesion-alpha5beta1-integrin-expression-and-proliferation-in-k562-cells
#13
Melissa D Kelley, Raynin Phomakay, Madison Lee, Victoria Niedzwiedz, Rachel Mayo
The interplay between cellular adhesion and proliferation is complex; however, integrins, particularly the α5β1 subset, play a pivotal role in orchestrating critical cellular signals that culminate in cellular adhesion and growth. Retinoids modify the expression of a variety of adhesive/proliferative signaling proteins including α5β1 integrins; however, the role of specific retinoic acid receptors involved in these processes has not been elucidated. In this study, the effect of all-trans-retinoic acid receptor (RAR) agonists on K562 cellular adhesion, proliferation, and α5β1 integrin cell surface expression was investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28545549/detection-and-genetic-characterization-of-a-wide-range-of-infectious-agents-in-ixodes-pavlovskyi-ticks-in-western-siberia-russia
#14
Vera Rar, Natalia Livanova, Sergey Tkachev, Galina Kaverina, Artem Tikunov, Yuliya Sabitova, Yana Igolkina, Victor Panov, Stanislav Livanov, Nataliya Fomenko, Igor Babkin, Nina Tikunova
BACKGROUND: The Ixodes pavlovskyi tick species, a member of the I. persulcatus/I. ricinus group, was discovered in the middle of the 20(th) century in the Russian Far East. Limited data have been reported on the detection of infectious agents in this tick species. The aim of this study was to investigate the prevalence and genetic variability of a wide range of infectious agents in I. pavlovskyi ticks collected in their traditional and recently invaded habitats, the Altai Mountains and Novosibirsk Province, respectively, which are both located within the Western Siberian part of the I...
May 25, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28545085/splicing-factor-sf3b1k700e-mutant-dysregulates-erythroid-differentiation-via-aberrant-alternative-splicing-of-transcription-factor-tal1
#15
Shuiling Jin, Hairui Su, Ngoc-Tung Tran, Jing Song, Sydney S Lu, Ying Li, Suming Huang, Omar Abdel-Wahab, Yanyan Liu, Xinyang Zhao
More than 60% of myeloid dysplasia syndrome (MDS) contains mutations in genes encoding for splicing factors such as SF3B1, U2AF, SRSF2 and ZRSR2. Mutations in SF3B1 are associated with 80% cases of refractory anemia with ring sideroblast (RARS), a subtype of MDS. SF3B1K700E is the most frequently mutated site among mutations on SF3B1. Yet the molecular mechanisms on how mutations of splicing factors lead to defective erythropoiesis are not clear. SF3B1K700E mutant binds to an RNA binding protein, RBM15, stronger than the wild type SF3B1 protein in co-immunoprecipitation assays...
2017: PloS One
https://www.readbyqxmd.com/read/28543886/human-hairless-protein-roles-in-skin-hair-and-emerging-connections-to-brain-and-other-cancers
#16
Anas Maatough, G Kerr Whitfield, Lemlem Brook, David Hsieh, Patricia Palade, Jui-Cheng Hsieh
The mammalian hairless protein (HR) is a 130 kDa nuclear transcription factor that is essential for proper skin and hair follicle function. Previous studies have focused on the role of HR in skin maintenance and hair cycling. However, hairless gene (HR) is also expressed in brain and other tissues, where its role remains poorly understood. HR has been reported to contain functional domains that potentially serve in DNA binding, histone demethylation, nuclear translocation signal, and protein-protein interactions...
May 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28538185/regulation-of-active-dna-demethylation-through-rar-mediated-recruitment-of-a-tet-tdg-complex
#17
Haider M Hassan, Bart Kolendowski, Majdina Isovic, Kerstin Bose, Helen J Dranse, Arthur V Sampaio, T Michael Underhill, Joseph Torchia
Retinoic acid (RA) plays important roles in development, growth, and homeostasis through regulation of the nuclear receptors for RA (RARs). Herein, we identify Hypermethylated in Cancer 1 (Hic1) as an RA-inducible gene. HIC1 encodes a tumor suppressor, which is often silenced by promoter hypermethylation in cancer. Treatment of cells with an RAR agonist causes a rapid recruitment of an RAR/RXR complex consisting of TDG, the lysine acetyltransferase CBP, and TET 1/2 to the Hic1 promoter. Complex binding coincides with a transient accumulation of 5fC/5caC and concomitant upregulation of Hic1 expression, both of which are TDG dependent...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28537238/-divergence-of-paralogous-growth-hormone-encoding-genes-and-their-promoters-in-salmonidae
#18
D N Kamenskaya, M V Pankova, D M Atopkin, V A Brykov
In many fish species, including salmonids, the growth-hormone is encoded by two duplicated paralogous genes, gh1 and gh2. Both genes were already in place at the time of divergence of species in this group. A comparison of the entire sequence of these genes of salmonids has shown that their conserved regions are associated with exons, while their most variable regions correspond to introns. Introns C and D include putative regulatory elements (sites Pit-1, CRE, and ERE), that are also conserved. In chars, the degree of polymorphism of gh2 gene is 2-3 times as large as that in gh1 gene...
March 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28520848/pattern-fusion-analysis-by-adaptive-alignment-of-multiple-heterogeneous-omics-data
#19
Qianqian Shi, Chuanchao Zhang, Minrui Peng, Xiangtian Yu, Tao Zeng, Juan Liu, Luonan Chen
Motivation: Integrating different omics profiles is a challenging task, which provides a comprehensive way to understand complex diseases in a multi-view manner. One key for such an integration is to extract intrinsic patterns in concordance with data structures, so as to discover consistent information across various data types even with noise pollution. Thus, we proposed a novel framework called "pattern fusion analysis" (PFA), which performs automated information alignment and bias correction, to fuse local sample-patterns (e...
May 18, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28514383/-efficiency-of-combined-methods-of-hemorroid-treatment-using-hal-rar-and-laser-destruction
#20
G V Rodoman, L V Kornev, T I Shalaeva, R N Malushenko
AIM: To develop the combined method of treatment of hemorrhoids with arterial ligation under Doppler control and laser destruction of internal and external hemorrhoids. MATERIAL AND METHODS: The study included 100 patients with chronic hemorrhoids stage II and III. Combined method of HAL-laser was used in study group, HAL RAR-technique in control group 1 and closed hemorrhoidectomy with linear stapler in control group 2. Сomparative evaluation of results in both groups was performed...
2017: Khirurgiia
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