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Personalized epigenetics

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https://www.readbyqxmd.com/read/29149222/personalized-medicine-and-hispanic-health-improving-health-outcomes-and-reducing-health-disparities-a-national-heart-lung-and-blood-institute-workshop-report
#1
M Larissa Avilés-Santa, John Heintzman, Nangel M Lindberg, Rafael Guerrero-Preston, Kenneth Ramos, Ana L Abraído-Lanza, Jonca Bull, Adolph Falcón, Mary Ann McBurnie, Ernest Moy, George Papanicolaou, Ileana L Piña, Jennifer Popovic, Shakira F Suglia, Miguel A Vázquez
Persons of Hispanic/Latino descent may represent different ancestries, ethnic and cultural groups and countries of birth. In the U.S., the Hispanic/Latino population is projected to constitute 29% of the population by 2060. A personalized approach focusing on individual variability in genetics, environment, lifestyle and socioeconomic determinants of health may advance the understanding of some of the major factors contributing to the health disparities experienced by Hispanics/Latinos and other groups in the U...
2017: BMC Proceedings
https://www.readbyqxmd.com/read/29143892/update-in-the-therapy-of-advanced-neuroendocrine-tumors
#2
REVIEW
Inbal Uri, Shani Avniel-Polak, David J Gross, Simona Grozinsky-Glasberg
Neuroendocrine tumors (NETs) are rare neoplasms, with an estimated annual incidence of ~ 6.9/100,000. NETs arise throughout the body from cells of the diffuse endocrine system. More than half originate from endocrine cells of the gastrointestinal tract and the pancreas, thus being referred to as gastroenteropancreatic NETs (GEP-NETs). The only treatment that offers a cure is surgery; however, most patients are diagnosed with metastatic disease, and curative surgery is usually not an option. These patients can be offered long-term systemic treatment, for both symptomatic relief and tumor growth suppression...
November 16, 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29138870/insig2-rs7566605-single-nucleotide-variant-and-global-dna-methylation-index-levels-are-associated-with-weight-loss-in-a-personalized-weight-reduction-program
#3
Francesca Pirini, Sebastian Rodriguez-Torres, Bola Grace Ayandibu, María Orera-Clemente, Alberto Gonzalez-de la Vega, Fahcina Lawson, Roland J Thorpe, David Sidransky, Rafael Guerrero-Preston
Single nucleotide polymorphisms associated with lipid metabolism and energy balance are implicated in the weight loss response caused by nutritional interventions. Diet‑induced weight loss is also associated with differential global DNA methylation. DNA methylation has been proposed as a predictive biomarker for weight loss response. Personalized biomarkers for successful weight loss may inform clinical decisions when deciding between behavioral and surgical weight loss interventions. The aim of the present study was to investigate the association between global DNA methylation, genetic variants associated with energy balance and lipid metabolism, and weight loss following a non‑surgical weight loss regimen...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29135687/environmental-and-epigenetic-regulation-of-postprandial-lipemia
#4
Laurence D Parnell, Jose M Ordovas, Chao-Qiang Lai
PURPOSE OF REVIEW: Postprandial lipemia (PPL), the prolonged increase in plasma triglyceride-rich lipoproteins following food consumption, is an independent risk factor for cardiovascular disease. Genetic variation, environment and the interplay between these direct an individual's postprandial lipid response. From such interplay, inducible and reversible epigenetic changes arise. Increasing evidence suggests epigenetic variation contributes to postprandial response in lipids and risk...
November 11, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/29132949/redefining-neuroendocrinology-epigenetics-of-brain-body-communication-over-the-life-course
#5
REVIEW
Bruce S McEwen
The brain is the central organ of stress and adaptation to stress that perceives and determines what is threatening, as well as the behavioral and physiological responses to the stressor, and it does so somewhat differently in males and females. The expression of steroid hormone receptors throughout the brain has broadened the definition of 'neuroendocrinology' to include the reciprocal communication between the entire brain and body via hormonal and neural pathways. Mediated in part via systemic hormonal influences, the adult and developing brain possess remarkable structural and functional plasticity in response to stress, including neuronal replacement, dendritic remodeling, and synapse turnover...
November 10, 2017: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29132028/dna-methylation-and-genetic-variation-of-the-angiotensin-converting-enzyme-ace-in-depression
#6
Dilys Lam, Marie-Laure Ancelin, Karen Ritchie, Richard Saffery, Joanne Ryan
BACKGROUND: Depression is one of the most prevalent psychiatric disorders, and in older persons is associated with high levels of comorbidity and under-treatment. Dysfunction of the hypothalamic-pituitary-adrenal (HPA) stress axis is consistently observed in the older population as well as depressed patients, with the angiotensin converting enzyme (ACE) a key regulator of the stress response. Epigenetic regulation of ACE may play an important role in HPA axis (dys)regulation. OBJECTIVE: To investigate ACE promoter methylation as a biomarker of late-life depression, and its association with genetic variation and cortisol secretion...
November 8, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29113150/aberrant-chromatin-remodeling-in-gynecological-cancer
#7
Ryuichiro Okawa, Kouji Banno, Miho Iida, Megumi Yanokura, Takashi Takeda, Moito Iijima, Haruko Kunitomi-Irie, Kanako Nakamura, Masataka Adachi, Kiyoko Umene, Yuya Nogami, Kenta Masuda, Yusuke Kobayashi, Eiichiro Tominaga, Daisuke Aoki
Epigenetic regulatory mechanisms are a current focus in studies investigating cancer. Chromatin remodeling alters chromatin structure and regulates gene expression, and aberrant chromatin remodeling is involved in carcinogenesis. AT-rich interactive domain-containing protein 1A (ARID1A) and SWItch/sucrose non-fermentable-related, matrix-associated, actin-dependent regulator of chromatin, subfamily a, member 4 are remodeling factors that are mutated in numerous types of cancer. In gynecological cancer, ARID1A mutations have been identified in 46-57% of clear cell carcinoma and 30% of endometrioid carcinoma...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29109526/genome-wide-genetic-and-epigenetic-analyses-of-pancreatic-acinar-cell-carcinomas-reveal-aberrations-in-genome-stability
#8
Cornelia Jäkel, Frank Bergmann, Reka Toth, Yassen Assenov, Daniel van der Duin, Oliver Strobel, Thomas Hank, Günter Klöppel, Craig Dorrell, Markus Grompe, Joshua Moss, Yuval Dor, Peter Schirmacher, Christoph Plass, Odilia Popanda, Peter Schmezer
Pancreatic acinar cell carcinoma (ACC) is an aggressive exocrine tumor with largely unknown biology. Here, to identify potential targets for personalized treatment, we perform integrative genome-wide and epigenome-wide analyses. The results show frequently aberrant DNA methylation, abundant chromosomal amplifications and deletions, and mutational signatures suggesting defective DNA repair. In contrast to pancreatic ductal adenocarcinoma, no recurrent point mutations are detected. The tumor suppressors ID3, ARID1A, APC, and CDKN2A are frequently impaired also on the protein level and thus potentially affect ACC tumorigenesis...
November 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/29106308/sleep-quality-and-methylation-status-of-core-circadian-rhythm-genes-among-nurses-and-midwives
#9
Agnieszka Bukowska-Damska, Edyta Reszka, Pawel Kaluzny, Edyta Wieczorek, Monika Przybek, Shanbeh Zienolddiny, Beata Peplonska
ABSTARCT Poor sleep quality or sleep restriction is associated with sleepiness and concentration problems. Moreover, chronic sleep restriction may affect metabolism, hormone secretion patterns and inflammatory responses. Limited recent reports suggest a potential link between sleep deprivation and epigenetic effects such as changes in DNA methylation profiles. The aim of the present study was to assess the potential association between poor sleep quality or sleep duration and the levels of 5-methylcytosine in the promoter regions of PER1, PER2, PER3, BMAL1, CLOCK, CRY1 CRY2 and NPAS2 genes, taking into account rotating night work and chronotype as potential confounders or modifiers...
November 6, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29094968/a-complex-dynamic-systems-perspective-on-identity-and-its-development-the-dynamic-systems-model-of-role-identity
#10
Avi Kaplan, Joanna K Garner
Current prominent models of identity face challenges in bridging across divergent perspectives and apparent dichotomies such as personal or social-collective, conscious or unconscious, and epigenetic or discursive-relational, and affording pursuit of research questions that allows integrative answers. This article presents a coherent theoretical perspective on the integrative nature of identity and its developmental mechanisms. Adopting the contextual social role as a primary unit of analysis, the Dynamic Systems Model of Role Identity (DSMRI) conceptualizes role identity as a Complex Dynamic System (CDS) anchored in action that comprises the actor's ontological and epistemological beliefs, purpose and goals, self-perceptions and self-definitions, and perceived action possibilities in the role...
November 2017: Developmental Psychology
https://www.readbyqxmd.com/read/29094313/progress-in-elucidating-biomarkers-of-antidepressant-pharmacological-treatment-response-a-systematic-review-and-meta-analysis-of-the-last-15-years
#11
REVIEW
G Voegeli, M L Cléry-Melin, N Ramoz, P Gorwood
BACKGROUND: Antidepressant drugs are widely prescribed, but response rates after 3 months are only around one-third, explaining the importance of the search of objectively measurable markers predicting positive treatment response. These markers are being developed in different fields, with different techniques, sample sizes, costs, and efficiency. It is therefore difficult to know which ones are the most promising. OBJECTIVE: Our purpose was to compute comparable (i...
November 2, 2017: Drugs
https://www.readbyqxmd.com/read/29080876/-a-cryobank-as-an-attribute-of-omics-technologies
#12
A A Sazanov, Kh Kh Erganokov, E Pfeifer
Biobanks are systematic and annotated collections of biological samples based on the system of standard operating procedures (SOP) and corresponding to the recommendations of the International Society for Biological and Environmental Repositories (ISBER). Standardization of conditions of obtaining, processing, storage of samples and providing to an end user are crucial in the activities of the biobank. The attributes of biobanks include common principles of labeling and annotation of biological samples using specialized software, an automated monitoring system of storage conditions, and registration of biosamples...
October 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/29069286/dna-hydroxymethylation-levels-are-altered-in-blood-cells-from-down-syndrome-persons-enrolled-in-the-mark-age-project
#13
Fabio Ciccarone, Elisabetta Valentini, Marco Malavolta, Michele Zampieri, Maria Giulia Bacalini, Roberta Calabrese, Tiziana Guastafierro, Anna Reale, Claudio Franceschi, Miriam Capri, Nicolle Breusing, Tilman Grune, María Moreno-Villanueva, Alexander Bürkle, Paola Caiafa
Down syndrome (DS) is caused by the presence of part or an entire extra copy of chromosome 21, a phenomenon that can cause a wide spectrum of clinically defined phenotypes of the disease. Most of the clinical signs of DS are typical of the ageing process including dysregulation of immune system. Beyond the causative genetic defect, DS persons display epigenetic alterations, particularly aberrant DNA methylation patterns that can contribute to the heterogeneity of the disease. In the present work we investigated the levels of 5-hydroxymethylcytosine (5hmC) and of the TET dioxygenase enzymes, which are involved in DNA demethylation processes and are often deregulated in pathological conditions as well as in ageing...
October 21, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29058990/introduction-to-the-theme-new-approaches-for-studying-drug-and-toxicant-action-applications-to-drug-discovery-and-development
#14
Paul A Insel, Susan G Amara, Terrence F Blaschke, Urs A Meyer
The theme "New Approaches for Studying Drug and Toxicant Action: Applications to Drug Discovery and Development" links 13 articles in this volume of the Annual Review of Pharmacology and Toxicology (ARPT). The engaging prefatory articles by Arthur Cho and Robert Lefkowitz set the stage for this theme and for the reviews that insightfully describe new approaches that advance research and discovery in pharmacology and toxicology. Examples include the progress being made in developing Organson- Chips/microphysiological systems and human induced pluripotent stem cell (iPSC)-derived cells to aid in understanding cell and tissue pharmacokinetics, action, and toxicity; the recognition of the importance of circadian rhythm, the microbiome, and epigenetics in drug and toxicant responses; and the application of results from new types of patient-derived information to create personalized/precision medicine, including therapeutics for pain, which may perhaps provide help in dealing with the opioid epidemic in the United States...
October 20, 2017: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/29057387/toward-solving-the-etiological-mystery-of-primary-biliary-cholangitis
#15
Atsushi Tanakaa, Patrick Sc Leung, Howard A Young, M Eric Gershwin
Primary biliary cholangitis (PBC) is considered a model autoimmune disease due to its signature AMA autoantibody, female predominance and relatively specific portal infiltration and cholestasis. The identification and cloning of the major mitochondrial autoantigens, recognized by AMA, have served as an immunologic platform to identify the earliest events involved in loss of tolerance. Despite the relative high concordance rate in identical twins, genome wide association studies have not proven clinically useful and have led to suggestions of epigenetic events...
June 2017: Hepatol Commun
https://www.readbyqxmd.com/read/29055387/the-colon-revisited-or-the-key-to-wellness-health-and-disease
#16
C A Gonzalez-Correa, E Mulett-Vásquez, D A Miranda, C H Gonzalez-Correa, P A Gómez-Buitrago
The hypothesis being advanced in this paper is that there is a new medical paradigm emerging from the biomedical research carried out in this century, mainly due to the explosion of the so called "omics" and associated techniques. The main idea is that there is a common pathway from wellbeing and health to chronic disease ("chronopathy") and even to death, which comprises following steps: 1) unhealthy diet, sedentary life style and permanent exposition to xenobiotics and all kinds of noxious stimuli;→2) intestinal dysbiosis;→3) alteration of the intestinal mucus layer (especially that of the colon);→4) disruption of the endothelial tight junctions;→5) metabolic endotoxemia+bacterial translocation;→6) inflammation;→7) exacerbation of the enteric nervous system (ENS) and consequent maladaptation and malfunctioning of the colon;→8) epigenetic manifestations;→9) "chronopathy" and premature death...
October 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29032046/past-present-and-future-of-genetic-research-in-borderline-personality-disorder
#17
REVIEW
Anahita Bassir Nia, Matthew C Eveleth, Jonathan M Gabbay, Yonis J Hassan, Bosi Zhang, M Mercedes Perez-Rodriguez
Borderline Personality Disorder (BPD) is a major mental illness with a lifetime prevalence of approximately 1-3%, characterized by a persistent pattern of instability in relationships, mood, impulse regulation, and sense of self. This results in impulsive self-damaging behavior, high suicide rates, and severe functional impairment. BPD has a complex, multifactorial etiology, resulting from an interaction among genetic and environmental substrates, and has moderate to high heritability based on twin and family studies...
September 12, 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/29020142/acute-inflammation-following-personal-exposure-to-fine-particulate-air-pollution
#18
Cuicui Wang, Renjie Chen, Min Shi, Jing Cai, Jingjin Shi, Changyuan Yang, Huichu Li, Zhijing Lin, Xia Meng, Cong Liu, Yue Niu, Yongjie Xia, Zhuohui Zhao, Haidong Kan, Clarice R Weinberg
Air pollution may increase cardiovascular and respiratory risk through inflammatory pathways, but evidence for acute effects has been weak and indirect. We enrolled 36 healthy nonsmoking college students for a panel study in Shanghai, China, a city with highly variable levels of air pollution, between December 2014 and July 2015. We measured personal exposure to fine particulate matter (PM2.5) continuously for 72-hour preceding each of four clinical visits that included phlebotomy. We measured four inflammation proteins and DNA methylation at nearby regulatory CpG loci...
August 17, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28992739/pharmacogenetic-and-pharmacogenomic-considerations-of-asthma-treatment
#19
REVIEW
Maria Gabriella Matera, Barbara Rinaldi, Luigino Calzetta, Mario Cazzola
Pharmacogenetic and pharmacogenomic approaches are already utilized in some areas, such as oncology and cardiovascular disease, for selecting appropriate patients and/or establishing treatment and dosing guidelines. This is not true in asthma although many patients have different responses to drug treatment due to genetic factors. Areas covered: Several genetic factors that affect the pharmacotherapeutic responses to asthma medications, such as β2-AR agonists, corticosteroids, and leukotriene modifiers and could contribute to significant between-person variability in response are described...
November 2017: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/28956810/challenges-for-super-resolution-localization-microscopy-and-biomolecular-fluorescent-nano-probing-in-cancer-research
#20
Michael Hausmann, Nataša Ilić, Götz Pilarczyk, Jin-Ho Lee, Abiramy Logeswaran, Aurora Paola Borroni, Matthias Krufczik, Franziska Theda, Nadine Waltrich, Felix Bestvater, Georg Hildenbrand, Christoph Cremer, Michael Blank
Understanding molecular interactions and regulatory mechanisms in tumor initiation, progression, and treatment response are key requirements towards advanced cancer diagnosis and novel treatment procedures in personalized medicine. Beyond decoding the gene expression, malfunctioning and cancer-related epigenetic pathways, investigations of the spatial receptor arrangements in membranes and genome organization in cell nuclei, on the nano-scale, contribute to elucidating complex molecular mechanisms in cells and tissues...
September 28, 2017: International Journal of Molecular Sciences
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