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Personalized epigenetics

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https://www.readbyqxmd.com/read/28719907/tumor-heterogeneity-in-lymphomas-a-different-breed
#1
Christian M Schürch, Birgit Federmann, Leticia Quintanilla-Martinez, Falko Fend
The facts that cancer represents tissues consisting of heterogeneous neoplastic, as well as reactive, cell populations and that cancers of the same histotype may show profound differences in clinical behavior have long been recognized. With the advent of new technologies and the demands of precision medicine, the investigation of tumor heterogeneity has gained much interest. An understanding of intertumoral heterogeneity in patients with the same disease entity is necessary to optimally guide personalized treatment...
July 19, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28712426/negative-affect-is-unrelated-to-fluctuations-in-hormone-levels-across-the-menstrual-cycle-evidence-from-a-multisite-observational-study-across-two-successive-cycles
#2
Michael P Hengartner, Tillmann H C Kruger, Kirsten Geraedts, Enrico Tronci, Toni Mancini, Fabian Ille, Marcel Egli, Susanna Röblitz, Rainald Ehrig, Lanja Saleh, Katharina Spanaus, Cordula Schippert, Yuanyuan Zhang, Brigitte Leeners
BACKGROUND: Female sex hormones may play a crucial role in the occurrence of cycle-related mood disorders. However, the literature is inconsistent and methodologically stringent observational studies on the relationship between sex hormones and negative affect are lacking. METHODS: In this longitudinal multisite study from Hannover, Germany, and Zurich, Switzerland, we examined oestrogen, progesterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone serum levels in association with negative affect as measured with the Positive and Negative Affect Schedule (PANAS)...
August 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28708104/fruit-and-juice-epigenetic-signatures-are-associated-with-independent-immunoregulatory-pathways
#3
Jessie Nicodemus-Johnson, Robert A Sinnott
Epidemiological evidence strongly suggests that fruit consumption promotes many health benefits. Despite the general consensus that fruit and juice are nutritionally similar, epidemiological results for juice consumption are conflicting. Our objective was to use DNA methylation marks to characterize fruit and juice epigenetic signatures within PBMCs and identify shared and independent signatures associated with these groups. Genome-wide DNA methylation marks (Illumina Human Methylation 450k chip) for 2,148 individuals that participated in the Framingham Offspring exam 8 were analyzed for correlations between fruit or juice consumption using standard linear regression...
July 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28697338/hdac-inhibitors-finally-open-up-chromatin-accessibility-signatures-of-ctcl
#4
Christopher J Ott, Catherine J Wu
In this issue of Cancer Cell, Qu et al. describe the chromatin accessibility profiles of cutaneous T cell lymphoma, with dynamic assessments of response and resistance to histone deacetylase inhibitor therapy. Their "personal regulome" analysis framework reveals chromatin features that may be predictive of clinical response to epigenetic therapy.
July 10, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28696430/neuropathology-of-suicide-recent-findings-and-future-directions
#5
P-E Lutz, N Mechawar, G Turecki
Suicide is a major public health concern and a leading cause of death in most societies. Suicidal behaviour is complex and heterogeneous, likely resulting from several causes. It associates with multiple factors, including psychopathology, personality traits, early-life adversity and stressful life events, among others. Over the past decades, studies in fields ranging from neuroanatomy, genetics and molecular psychiatry have led to a model whereby behavioural dysregulation, including suicidal behaviour (SB), develops as a function of biological adaptations in key brain systems...
July 11, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28693974/the-added-value-of-type-i-interferons-to-cytotoxic-treatments-of-cancer
#6
Laura Bracci, Antonella Sistigu, Enrico Proietti, Federica Moschella
Type I interferons (IFNs) exert anti-proliferative, antiviral and immunomodulatory activities. They are also involved in cell differentiation and anti-tumor defense processes. A growing body of literature indicates that the success of conventional chemotherapeutics, epigenetic drugs, targeted anticancer agents and radiotherapy (RT) relies, at least in part, on the induction of type I IFN signaling in malignant cells, tumor-infiltrating antigen presenting cells or other immune cells within lymphoid organs or blood...
June 19, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/28693800/review-of-sequencing-platforms-and-their-applications-in-phaeochromocytoma-and-paragangliomas
#7
REVIEW
Suja Pillai, Vinod Gopalan, Alfred King-Yin Lam
Genetic testing is recommended for patients with phaeochromocytoma (PCC) and paraganglioma (PGL) because of their genetic heterogeneity and heritability. Due to the large number of susceptibility genes associated with PCC/PGL, next-generation sequencing (NGS) technology is ideally suited for carrying out genetic screening of these individuals. New generations of DNA sequencing technologies facilitate the development of comprehensive genetic testing in PCC/PGL at a lower cost. Whole-exome sequencing and targeted NGS are the preferred methods for screening of PCC/PGL, both having precise mutation detection methods and low costs...
August 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28689206/guide-for-current-nutrigenetic-nutrigenomic-and-nutriepigenetic-approaches-for-precision-nutrition-involving-the-prevention-and-management-of-chronic-diseases-associated-with-obesity
#8
Omar Ramos-Lopez, Fermín I Milagro, Hooman Allayee, Agata Chmurzynska, Myung Sook Choi, Rui Curi, Raffaele De Caterina, Lynnette R Ferguson, Leticia Goni, Jing X Kang, Martin Kohlmeier, Amelia Marti, Luis A Moreno, Louis Pérusse, Chandan Prasad, Lu Qi, Ram Reifen, Jose I Riezu-Boj, Rodrigo San-Cristobal, Jose Luis Santos, J Alfredo Martínez
Chronic diseases, including obesity, are major causes of morbidity and mortality in most countries. The adverse impacts of obesity and associated comorbidities on health remain a major concern due to the lack of effective interventions for prevention and management. Precision nutrition is an emerging therapeutic approach that takes into account an individual's genetic and epigenetic information, as well as age, gender, or particular physiopathological status. Advances in genomic sciences are contributing to a better understanding of the role of genetic variants and epigenetic signatures as well as gene expression patterns in the development of diverse chronic conditions, and how they may modify therapeutic responses...
July 8, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28673261/paternal-personality-and-social-status-influence-offspring-activity-in-zebrafish
#9
Susanne Zajitschek, James E Herbert-Read, Nasir M Abbasi, Felix Zajitschek, Simone Immler
BACKGROUND: Evidence for the transmission of non-genetic information from father to offspring is rapidly accumulating. While the impact of chemical and physical factors such as toxins or diet on the fitness of the parents and their offspring have been studied extensively, the importance of behavioural and social circumstances has only recently been recognised. Behavioural traits such as personality characteristics can be relatively stable, and partly comprise a genetic component but we know little about the non-genetic transmission of plastic behavioural traits from parents to offspring...
July 3, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28669403/a-genetic-variant-ameliorates-%C3%AE-thalassemia-severity-by-epigenetic-mediated-elevation-of-human-fetal-hemoglobin-expression
#10
Diyu Chen, Yangjin Zuo, Xinhua Zhang, Yuhua Ye, Xiuqin Bao, Haiyan Huang, Wanicha Tepakhan, Lijuan Wang, Junyi Ju, Guangfu Chen, Mincui Zheng, Dun Liu, Shuodan Huang, Lu Zong, Changgang Li, Yajun Chen, Chenguang Zheng, Lihong Shi, Quan Zhao, Qiang Wu, Supan Fucharoen, Cunyou Zhao, Xiangmin Xu
A delayed fetal-to-adult hemoglobin (Hb) switch ameliorates the severity of β-thalassemia and sickle cell disease. The molecular mechanism underlying the epigenetic dysregulation of the switch is unclear. To explore the potential cis-variants responsible for the Hb switching, we systematically analyzed an 80-kb region spanning the β-globin cluster using capture-based next-generation sequencing of 1142 Chinese β-thalassemia persons and identified 31 fetal hemoglobin (HbF)-associated haplotypes of the selected 28 tag regulatory single-nucleotide polymorphisms (rSNPs) in seven linkage disequilibrium (LD) blocks...
July 6, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28666525/untangling-genetic-risk-for-alzheimer-s-disease
#11
REVIEW
Anna A Pimenova, Towfique Raj, Alison M Goate
Alzheimer's disease (AD) is a genetically heterogeneous neurodegenerative disorder caused by fully penetrant single gene mutations in a minority of cases, while the majority of cases are sporadic or show modest familial clustering. These cases are of late onset and likely result from the interaction of many genes and the environment. More than 30 loci have been implicated in AD by a combination of linkage, genome-wide association, and whole genome/exome sequencing. We have learned from these studies that perturbations in endolysosomal, lipid metabolism, and immune response pathways substantially contribute to sporadic AD pathogenesis...
May 22, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28664328/timeline-of-intergenerational-child-maltreatment-the-mind-brain-body-interplay
#12
REVIEW
Marija Mitkovic Voncina, Milica Pejovic Milovancevic, Vanja Mandic Maravic, Dusica Lecic Tosevski
PURPOSE OF REVIEW: Still obscure mechanisms of intergenerational child maltreatment (ITCM) have been investigated partially, from various psychological and biological perspectives and from various time perspectives. This review is aimed at integrating the findings on different temporal ITCM pathways, emphasizing the mind-brain-body interplay. RECENT FINDINGS: Psychological mediators of ITCM involve attachment, mentalization, dissociation, social information processing, personality traits, and psychiatric disorders...
August 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28654914/an-epigenetic-signature-of-adhesion-molecules-predicts-poor-prognosis-of-ovarian-cancer-patients
#13
Ping-Ying Chang, Yu-Ping Liao, Hui-Chen Wang, Yu-Chih Chen, Rui-Lan Huang, Yu-Chi Wang, Chiou-Chung Yuan, Hung-Cheng Lai
DNA methylation is a promising biomarker for cancer. The epigenetic effects of cell adhesion molecules may affect the therapeutic outcome and the present study examined their effects on survival in ovarian cancer. We integrated methylomics and genomics datasets in The Cancer Genome Atlas (n = 391) and identified 106 highly methylated adhesion-related genes in ovarian cancer tissues. Univariate analysis revealed the methylation status of eight genes related to progression-free survival. In multivariate Cox regression analysis, four highly methylated genes (CD97, CTNNA1, DLC1, HAPLN2) and three genes (LAMA4, LPP, MFAP4) with low methylation were significantly associated with poor progression-free survival...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28654205/driving-toward-precision-medicine-for-acute-leukemias-are-we-there-yet
#14
Clement Chung, Hilary Ma
Despite recent progress in the understanding of the molecular basis of acute leukemias, treatment options for these diseases have not shown significant changes over the last few decades. In this review, we present a nonexhaustive key summary of the current cytogenetic and molecular changes associated with acute leukemias in disease prognostication and potential targeted therapies. An emerging paradigm is that many genetic or molecular alterations target similar signal transduction, transcriptional, and epigenetic pathways...
June 27, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28643915/preface-to-coast-2016-innovators-workshop-on-personalized-and-precision-orthodontic-therapy
#15
J C Nickel, D A Covell, S A Frazier-Bowers, S Kapila, S S Huja, L R Iwasaki
OBJECTIVE: A second focused workshop explored how to transfer novel findings into clinical orthodontic practice. SETTING AND SAMPLE POPULATION: Participants met in West Palm Beach (Florida, USA), on 9-11 September 2016 for the Consortium for Orthodontic Advances in Science and Technology 2016 Innovators' Workshop (COAST). Approximately 65 registered attendees considered and discussed information from 27 to 34 speakers, 8 to 15 poster presenters and four lunch-hour focus group leaders...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28625481/chromatin-accessibility-landscape-of-cutaneous-t-cell-lymphoma-and-dynamic-response-to-hdac-inhibitors
#16
Kun Qu, Lisa C Zaba, Ansuman T Satpathy, Paul G Giresi, Rui Li, Yonghao Jin, Randall Armstrong, Chen Jin, Nathalie Schmitt, Ziba Rahbar, Hideki Ueno, William J Greenleaf, Youn H Kim, Howard Y Chang
Here, we define the landscape and dynamics of active regulatory DNA in cutaneous T cell lymphoma (CTCL) by ATAC-seq. Analysis of 111 human CTCL and control samples revealed extensive chromatin signatures that distinguished leukemic, host, and normal CD4(+) T cells. We identify three dominant patterns of transcription factor (TF) activation that drive leukemia regulomes, as well as TF deactivations that alter host T cells in CTCL patients. Clinical response to histone deacetylase inhibitors (HDACi) is strongly associated with a concurrent gain in chromatin accessibility...
July 10, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28625302/pharmacogenetics-in-obstetric-anesthesia
#17
REVIEW
Ruth Landau, Richard Smiley
The 21st century has been billed as the era of "precision/personalized medicine." Genetic investigation of clinical syndromes may guide therapy as well as reveal previously unknown biological or pharmacological pathways that may result in novel drug therapies. Several clinical issues in obstetrics and obstetric anesthesiology have been targets for genetic investigations. These include evaluation of the genetic effects on preterm labor and the progression of labor, spinal anesthesia-induced hypotension and the response to medications used to treat hypotension, and the effect of gene variants on pain and analgesic responses...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28619017/borderline-personality-disorder-and-childhood-trauma-exploring-the-affected-biological-systems-and-mechanisms
#18
Nadia Cattane, Roberta Rossi, Mariangela Lanfredi, Annamaria Cattaneo
BACKGROUND: According to several studies, the onset of the Borderline Personality Disorder (BPD) depends on the combination between genetic and environmental factors (GxE), in particular between biological vulnerabilities and the exposure to traumatic experiences during childhood. We have searched for studies reporting possible alterations in several biological processes and brain morphological features in relation to childhood trauma experiences and to BPD. We have also looked for epigenetic mechanisms as they could be mediators of the effects of childhood trauma in BPD vulnerability...
June 15, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28612750/genetic-and-epigenetic-profile-of-patients-with-alcoholic-liver-disease
#19
Luigi Boccuto, Ludovico Abenavoli
Alcoholic liver disease (ALD) is a definition encompassing a spectrum of disorders ranging from simple steatosis to cirrhosis and hepatocellular carcinoma. Excessive alcohol consumption triggers a series of metabolic reactions that affect the liver by inducing lipogenesis, increasing oxidative stress, and causing abnormal inflammatory responses. The metabolic pathways regulating lipids, reactive oxygen species (ROS), and immune system are closely related and in some cases cross-regulate each other. Therefore, it must be taken into account that major genetic and epigenetic abnormalities affecting enzymes involved in one of such pathways can play a pivotal role in ALD pathogenesis...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28611656/dissecting-the-molecular-mechanisms-of-neurodegenerative-diseases-through-network-biology
#20
Jose A Santiago, Virginie Bottero, Judith A Potashkin
Neurodegenerative diseases are rarely caused by a mutation in a single gene but rather influenced by a combination of genetic, epigenetic and environmental factors. Emerging high-throughput technologies such as RNA sequencing have been instrumental in deciphering the molecular landscape of neurodegenerative diseases, however, the interpretation of such large amounts of data remains a challenge. Network biology has become a powerful platform to integrate multiple omics data to comprehensively explore the molecular networks in the context of health and disease...
2017: Frontiers in Aging Neuroscience
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