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https://www.readbyqxmd.com/read/29111822/repercussions-of-hypo-and-hyperthyroidism-on-the-heart-circadian-clock
#1
Rodrigo A Peliciari-Garcia, Paula Bargi-Souza, Martin E Young, Maria Tereza Nunes
Myocardial gene expression and metabolism fluctuate over the course of the day in association with changes in energy supply and demand. Time-of-day-dependent oscillations in myocardial processes have been linked to the intrinsic cardiomyocyte circadian clock. Triiodothyronine (T3) is an important modulator of heart metabolism and function. Recently, our group has reported time-of-day-dependent rhythms in cardiac T3 sensitivity, as well as, T3-mediated acute alterations on core clock components. Hypo and hyperthyroidism are the second most prevalent endocrine disease worldwide...
November 7, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29073752/rora-polymorphism-interacts-with-childhood-maltreatment-in-determining-anxiety-sensitivity-by-sex-a-preliminary-study-in-healthy-young-adults
#2
Jung-Ah Min, Heon-Jeong Lee, Seung-Hwan Lee, Young-Min Park, Seung-Gul Kang, Young-Gyu Park, Jeong-Ho Chae
Objective: Recent studies have reported associations of retinoid-related orphan receptor alpha (RORA) gene single nucleotide polymorphisms (SNPs) with depression and anxiety disorders. Based on these, we attempt to test whether RORA polymorphism is associated with anxiety sensitivity (AS), the intermediate phenotype of depression and anxiety disorders. Considering gene-environment interactions and sex differences in AS, childhood maltreatment (CM) and sex were considered as confounders...
November 30, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29056335/laser-capture-and-deep-sequencing-reveals-the-transcriptomic-programmes-regulating-the-onset-of-pancreas-and-liver-differentiation-in-human-embryos
#3
Rachel E Jennings, Andrew A Berry, David T Gerrard, Stephen J Wearne, James Strutt, Sarah Withey, Mariya Chhatriwala, Karen Piper Hanley, Ludovic Vallier, Nicoletta Bobola, Neil A Hanley
To interrogate the alternative fates of pancreas and liver in the earliest stages of human organogenesis, we developed laser capture, RNA amplification, and computational analysis of deep sequencing. Pancreas-enriched gene expression was less conserved between human and mouse than for liver. The dorsal pancreatic bud was enriched for components of Notch, Wnt, BMP, and FGF signaling, almost all genes known to cause pancreatic agenesis or hypoplasia, and over 30 unexplored transcription factors. SOX9 and RORA were imputed as key regulators in pancreas compared with EP300, HNF4A, and FOXA family members in liver...
November 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28938872/effect-of-vitamin-a-supplementation-on-gut-microbiota-in-children-with-autism-spectrum-disorders-a-pilot-study
#4
Juan Liu, Xiao Liu, Xue-Qin Xiong, Ting Yang, Ting Cui, Na-Li Hou, Xi Lai, Shu Liu, Min Guo, Xiao-Hua Liang, Qian Cheng, Jie Chen, Ting-Yu Li
BACKGROUND: Dysbiosis of gut microbiota are commonly reported in autism spectrum disorder (ASD) and may contribute to behavioral impairment. Vitamin A (VA) plays a role in regulation of gut microbiota. This study was performed to investigate the role of VA in the changes of gut microbiota and changes of autism functions in children with ASD. RESULTS: Sixty four, aged 1 to 8 years old children with ASD completed a 6-month follow-up study with VA intervention. High-performance liquid chromatography was used to assess plasma retinol levels...
September 22, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28900196/characterization-of-a-new-pathway-that-activates-lumisterol-in-vivo-to-biologically-active-hydroxylumisterols
#5
Andrzej T Slominski, Tae-Kang Kim, Judith V Hobrath, Zorica Janjetovic, Allen S W Oak, Arnold Postlethwaite, Zongtao Lin, Wei Li, Yukimasa Takeda, Anton M Jetten, Robert C Tuckey
Using LC/qTOF-MS we detected lumisterol, 20-hydroxylumisterol, 22-hydroxylumisterol, 24-hydroxylumisterol, 20,22-dihydroxylumisterol, pregnalumisterol, 17-hydroxypregnalumisterol and 17,20-dihydroxypregnalumisterol in human serum and epidermis, and the porcine adrenal gland. The hydroxylumisterols inhibited proliferation of human skin cells in a cell type-dependent fashion with predominant effects on epidermal keratinocytes. They also inhibited melanoma proliferation in both monolayer and soft agar. 20-Hydroxylumisterol stimulated the expression of several genes, including those associated with keratinocyte differentiation and antioxidative responses, while inhibiting the expression of others including RORA and RORC...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28889016/the-effect-of-melatonin-from-slow-release-implants-on-basic-and-tlr-4-mediated-gene-expression-of-inflammatory-cytokines-and-their-receptors-in-the-choroid-plexus-in-ewes
#6
M Kowalewska, A P Herman, A Szczepkowska, J Skipor
The present study concerns the effect of melatonin from slow-release implants on the expression of genes coding interleukin-1β (Il1B), inerleukin-6 (Il6), tumour necrosis factor α (Tnf) and their receptors: IL-1 receptor type I (Il1r1) and type II (Il1r2), IL-6 receptor (Il6r) and signal transducer (Il6st), TNFα receptor type I (Tnfrsf1a) and II (Tnfrsf1b) and retinoid-related orphan receptor α (RorA) and Rev.-erbα in the ovine choroid plexus (CP) under basal and lipopolysaccharide (LPS)-challenged conditions...
September 5, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28863919/genome-wide-association-study-for-mandibular-prognathism-using-microsatellite-and-pooled-dna-method
#7
Fumio Saito, Takashi S Kajii, Akira Oka, Keiichiro Ikuno, Junichiro Iida
INTRODUCTION: The purpose of this study was to extend an association study from chromosome 1 to the whole genome (genome-wide association study) to find susceptibility loci of mandibular prognathism. METHODS: Two hundred forty patients diagnosed with mandibular prognathism and 360 healthy controls of Japanese descent were recruited. The typing of microsatellites covering the whole genome was conducted using a pooled DNA method. Upon completion of the first and second screenings with pooled DNA, the positive microsatellite markers from both the first and second typings were retyped using individual-subject DNA samples to confirm the significance of allele frequency...
September 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28802563/metabolic-circuit-involving-free-fatty-acids-microrna-122-and-triglyceride-synthesis-in-liver-and-muscle-tissues
#8
Chofit Chai, Mila Rivkin, Liav Berkovits, Alina Simerzin, Elina Zorde-Khvalevsky, Nofar Rosenberg, Shiri Klein, Dayana Yaish, Ronen Durst, Shoshana Shpitzen, Shiran Udi, Joseph Tam, Joerg Heeren, Anna Worthmann, Christoph Schramm, Johannes Kluwe, Revital Ravid, Eran Hornstein, Hilla Giladi, Eithan Galun
BACKGROUND & AIMS: Effective treatments are needed for hepatic steatosis characterized by accumulation of triglycerides in hepatocytes, which leads to hepatocellular carcinoma. MicroRNA 122 (MIR122) is expressed only in the liver, where it regulates lipid metabolism. We investigated the mechanism by which free fatty acids (FFAs) regulate MIR122 expression and the effect of MIR122 on triglyceride synthesis. METHODS: We analyzed MIR122 promoter activity and validated its target mRNAs by transfection of Luciferase reporter plasmids into Huh7, BNL-1ME, and HEK293 cultured cell lines...
August 9, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28783681/the-orphan-nuclear-receptor-ror%C3%AE-and-group-3-innate-lymphoid-cells-drive-fibrosis-in-a-mouse-model-of-crohn-s-disease
#9
Bernard C Lo, Matthew J Gold, Michael R Hughes, Frann Antignano, Yanet Valdez, Colby Zaph, Kenneth W Harder, Kelly M McNagny
Fibrosis is the result of dysregulated tissue regeneration and is characterized by excessive accumulation of matrix proteins that become detrimental to tissue function. In Crohn's disease, this manifests itself as recurrent gastrointestinal strictures for which there is no effective therapy beyond surgical intervention. Using a model of infection-induced chronic gut inflammation, we show that Rora-deficient mice are protected from fibrosis; infected intestinal tissues display diminished pathology, attenuated collagen deposition, and reduced fibroblast accumulation...
September 2, 2016: Science Immunology
https://www.readbyqxmd.com/read/28777361/-associations-between-chronotype-road-accidents-and-polymorphisms-in-genes-linked-with-biological-clock-and-dopaminergic-system
#10
A O Taranov, A N Puchkova, P A Slominsky, T V Tupitsyna, V V Dementiyenko, V B Dorokhov
Public transport driving is a highly demanding activity requiring high skills and responsibility. Shift work, problems with regular sleep schedule negatively impact psychomotor reactions, cognitive functions and ability to react appropriately to the changing environment. For professional drivers all these factors may lead to the increased risk of a road accident. Individual differences in chronotype, cognitive and emotional control are partially genetically determined. AIM: Our study aimed to investigate the possible associations between chronotype parameters, traffic accident history and single nucleotide polymorphisms (SNPs) in a number of genes: RORA (rs1159814), CLOCK (rs12649507), PER3 (rs2640909), NPSR1 (rs324981), NPAS2 (rs4851377), DRD3 (rs6280), SLC6A3 (rs6347), DBH (rs1611125)...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28744254/metabolic-characterization-of-a-novel-ror%C3%AE-knockout-mouse-model-without-ataxia
#11
Cyrielle Billon, Sadichha Sitaula, Thomas P Burris
The retinoic acid receptor-related receptor α (RORα) is a nuclear receptor that plays an important role in regulation of metabolism and the immune system. Genetic deletion of the receptor yields mice with significant cerebellar developmental issues associated with severe ataxia. Although many metabolic studies have been performed in these models, the impaired locomotor activity of these mice is known to affect their normal mobility and feeding behaviors. This creates some difficulty in interpretation of the role of RORα in models of metabolic disease where feeding and muscle function is a critical component of the pathophysiology...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28729066/the-effect-of-high-fat-diet-on-daily-rhythm-of-the-core-clock-genes-and-muscle-functional-genes-in-the-skeletal-muscle-of-chinese-soft-shelled-turtle-trionyx-sinensis
#12
Li Liu, Guomin Jiang, Zhitao Peng, Yulong Li, Jinlong Li, Li Zou, Zhigang He, Xiaoqing Wang, Wuying Chu
In the present study, we sought to investigate the influence of high fat diet on the core clock genes and the muscle functional genes daily expression in the skeletal muscle of Chinese soft-shelled turtle. The turtles were fed by two diets including a control fat diet (the CON treatment, 7.98% lipid) and a high fat diet (the HFD treatment, 13.86% lipid) for six weeks and administrated by the photophase regimen of 24h light/dark (12L:12D) cycle. After the feeding trial experiment, we measured the daily expression levels of 17 core clock genes (Clock, Bmal1/2, NPAS2, Tim, Cry1/2, Per1/2, DBP, AANAT, NIFL3, BHLHE40, NR1D2, RORA, RORB, RORC) and 12 muscle functional genes (FBXO32, MBNL1, MSTN, Myf5, Myf6, MyoD, MyoG, MyoM1, PPARa, PDK4, Trim63, UCP3) in the skeletal muscle of the two treatments...
November 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28670633/the-orphan-nuclear-receptor-ror-alpha-and-group-3-innate-lymphoid-cells-drive-fibrosis-in-a-mouse-model-of-crohn-s-disease
#13
Bernard C Lo, Matthew J Gold, Michael R Hughes, Frann Antignano, Yanet Valdez, Colby Zaph, Kenneth W Harder, Kelly M McNagny
Fibrosis is the result of dysregulated tissue regeneration and is characterized by excessive accumulation of matrix proteins that become detrimental to tissue function. In Crohn's disease, this manifests itself as recurrent gastrointestinal strictures for which there is no effective therapy beyond surgical intervention. Using a model of infection-induced chronic gut inflammation, we show that Rora-deficient mice are protected from fibrosis; infected intestinal tissues display diminished pathology, attenuated collagen deposition and reduced fibroblast accumulation...
September 2, 2016: Science Immunology
https://www.readbyqxmd.com/read/28617945/microrna-cluster-106a-363-is-involved-in-t-helper-17-cell-differentiation
#14
Marc Kästle, Sabine Bartel, Kerstin Geillinger-Kästle, Martin Irmler, Johannes Beckers, Bernhard Ryffel, Oliver Eickelberg, Susanne Krauss-Etschmann
T-helper cell type 17 (Th17) mediated inflammation is associated with various diseases including autoimmune encephalitis, inflammatory bowel disease and lung diseases such as chronic obstructive pulmonary disease and asthma. Differentiation into distinct T helper subtypes needs to be tightly regulated to ensure an immunological balance. As microRNAs (miRNAs) are critical regulators of signalling pathways, we aimed to identify specific miRNAs implicated in controlling Th17 differentiation. We were able to create a regulatory network model of murine T helper cell differentiation by combining Affymetrix mRNA and miRNA arrays and in silico analysis...
November 2017: Immunology
https://www.readbyqxmd.com/read/28615725/transcriptome-analysis-reveals-similarities-between-human-blood-cd3-cd56-bright-cells-and-mouse-cd127-innate-lymphoid-cells
#15
David S J Allan, Ana Sofia Cerdeira, Anuisa Ranjan, Christina L Kirkham, Oscar A Aguilar, Miho Tanaka, Richard W Childs, Cynthia E Dunbar, Jack L Strominger, Hernan D Kopcow, James R Carlyle
For many years, human peripheral blood natural killer (NK) cells have been divided into functionally distinct CD3(-) CD56(bright) CD16(-) and CD3(-) CD56(dim) CD16(+) subsets. Recently, several groups of innate lymphoid cells (ILC), distinct from NK cells in development and function, have been defined in mouse. A signature of genes present in mouse ILC except NK cells, defined by Immunological Genome Project studies, is significantly over-represented in human CD56(bright) cells, by gene set enrichment analysis...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28608249/retinoic-acid-related-orphan-receptor-alpha-rora-variants-are-associated-with-autism-spectrum-disorder
#16
Arezou Sayad, Rezvan Noroozi, Mir Davood Omrani, Mohammad Taheri, Soudeh Ghafouri-Fard
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with various epidemiologic, genetic, epigenetic, and environmental factors being associated with it. The observed sex bias in ASD towards male has prompted investigators to propose sex-dependent mechanisms for ASD. Retinoic acid-related orphan receptor-alpha (RORA) is a new autism candidate gene that has been shown to be differentially regulated by male and female hormones. Previous studies have shown deregulation of its expression in the prefrontal cortex and the cerebellum of ASD patients...
June 12, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28607111/a-distinct-inhibitory-function-for-mir-18a-in-th17-cell-differentiation
#17
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...
July 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28598825/retinoic-acid-related-orphan-receptor-alpha-rora-variants-and-risk-of-breast-cancer
#18
Mohammad Taheri, Mir Davood Omrani, Rezvan Noroozi, Shaghayegh Sarrafzadeh, Soudeh Ghafouri-Fard, Arezou Sayad
BACKGROUND: Breast cancer is the most common type of cancer and the second leading cause of cancer death in females. Despite numerous studies in this field, the etiology and clinical behavior of breast tumors have not been understood yet. Retinoid orphan nuclear receptor alpha (RORA) is a member of the orphan nuclear factor family involved in the regulation of lipid and steroid metabolism, immune response and circadian rhythms. Recent evidences support its role as a tumor suppressor gene...
June 2, 2017: Breast Disease
https://www.readbyqxmd.com/read/28596594/magnifying-narrow-band-imaging-of-gastric-mucosal-morphology-predicts-the-h-pylori-related-epigenetic-field-defect
#19
Tomomitsu Tahara, Jumpei Yamazaki, Sayumi Tahara, Masaaki Okubo, Tomohiko Kawamura, Noriyuki Horiguchi, Takamitsu Ishizuka, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Makoto Kuroda, Naoki Ohmiya
DNA methylation is associated with "field defect" in the gastric mucosa. To characterize "field defect" morphologically, we examined DNA methylation of non-neoplastic gastric mucosa in relation to their morphology seen by narrow-band imaging (NBI) with magnifying endoscopy. Magnifying NBI of non-neoplastic gastric body was classified as follows: normal-small and round pits with uniform subepithelial capillary networks; type 1-a little enlarged round pits with indistinct subepithelial capillary networks; type 2-remarkably enlarged pits with irregular vessels; and type 3-clearly demarcated oval or tubulovillous pits with bulky coiled or wavy vessels...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28557342/morphologic-characterization-of-residual-dna-methylation-in-the-gastric-mucosa-after-helicobacter-pylori-eradication
#20
Sayumi Tahara, Tomomitsu Tahara, Tetsuya Tuskamoto, Noriyuki Horiguchi, Tomohiko Kawamura, Masaaki Okubo, Takamitsu Ishizuka, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Makoto Kuroda, Naoki Ohmiya
Residual DNA methylation in the gastric mucosa after Helicobacter pylori (H. pylori) eradication may have a role in gastric carcinogenesis. We examined the association between morphologic features and promoter methylation status of non-neoplastic gastric mucosa especially after H. pylori eradication. A total of 140 gastric specimens from 99 participants who had at least 6 months of post-eradication period were examined. The magnifying narrow-band imaging (NBI) endoscopic feature of gastric mucosa was divided into two types: restored-small, round pits, accompanied with honeycomb-like subepithelial capillary networks; atrophic-well-demarcated oval or tubulovillous pits with clearly visible coiled or wavy vessels...
July 2017: Cancer Medicine
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