DNA methylation and differentiation.

Abstract:

:The methylation of specific cytosine residues in DNA has been implicated in regulating gene expression and facilitating functional specialization of cellular phenotypes. Generally, the demethylation of certain CpG sites correlates with transcriptional activation of genes. 5-Azacytidine is an inhibitor of DNA methylation and has been widely used as a potent activator of suppressed genetic information. Treatment of cells with 5-azacytidine results in profound phenotypic alterations. The drug-induced hypomethylation of DNA apparently perturbs DNA-protein interactions that may consequently alter transcriptional activity and cell determination. The inhibitory effect of cytosine methylation may be exerted via altered DNA-protein interactions specifically or may be transduced by a change in the conformation of chromatin. Recent studies have demonstrated that cytosine methylation also plays a central role in parental imprinting, which in turn determines the differential expression of maternal and paternal genomes during embryogenesis. In other words, methylation is the mechanism whereby the embryo retains memory of the gametic origin of each component of genetic information. A memory of this type would probably persist during DNA replication and cell division as methylation patterns are stable and heritable.

authors

Michalowsky LA,Jones PA

doi

10.1289/ehp.8980189

subject

Has Abstract

pub_date

1989-03-01 00:00:00

pages

189-97

eissn

0091-6765

issn

1552-9924

journal_volume

80

pub_type

杂志文章
  • Utilization of DNA-protein cross-links as a biomarker of chromium exposure.

    abstract::Human exposure to carcinogenic Cr(VI) compounds is found among workers in a large number of professional groups, and it can also occur through environmental pollution. A significant number of toxic waste sites contain Cr as a major contaminant. In this paper we summarize our efforts to apply measurements of DNA-protei...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.98106s4969

    authors: Zhitkovich A,Voitkun V,Kluz T,Costa M

    更新日期:1998-08-01 00:00:00

  • Expanded operational concept of high risk groups and its role in standard setting.

    abstract::The role of the knowledge of high risk groups in the standard-setting process is examined. The overall conclusion is that many potential high risk segments of the population have not been studied adequately and that this deficiency in our knowledge markedly reduces the ability of decision makers to derive appropriate ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.8352257

    authors: Calabrese EJ

    更新日期:1983-10-01 00:00:00

  • Prostaglandin synthase-mediated metabolism of carcinogens and a potential role for peroxyl radicals as reactive intermediates.

    abstract::Prostaglandin-H synthase is unique among enzymes of the plant and animal kingdom in its ability to biosynthesize and metabolize hydroperoxides. Its cyclooxygenase activity oxygenates polyunsaturated fatty acids to hydroperoxy endoperoxides, and its peroxidase activity reduces the hydroperoxy group to hydroxy groups. H...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.90885

    authors: Marnett LJ

    更新日期:1990-08-01 00:00:00

  • Assessing the effects of endocrine disruptors in the National Children's Study.

    abstract::Children are uniquely vulnerable to toxic chemicals in the environment. Among the environmental toxicants to which children are at risk of exposure are endocrine disruptors (EDs)--chemicals that have the capacity to interfere with hormonal signaling systems. EDs may alter feedback loops in the brain, pituitary, gonads...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.5799

    authors: Landrigan P,Garg A,Droller DB

    更新日期:2003-10-01 00:00:00

  • Cancer mortality in U.S. counties with plastics and related industries.

    abstract::Counties in the United States have been identified with chemical establishments whose primary manufacturing processes use vinyl chloride. Site-specific cancer mortality comparisons have revealed an excess of multiple myeloma in males associated with two of the manufacturing categories, synthetic rubber and synthetic f...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.751179

    authors: Mason TJ

    更新日期:1975-06-01 00:00:00

  • Persistent organic pollutant residues in human fetal liver and placenta from Greater Montreal, Quebec: a longitudinal study from 1998 through 2006.

    abstract:BACKGROUND:There is general concern that persistent organic pollutants (POPs) found in the environment, wildlife, food, water, house dust, human tissues, and fluids may alter normal human physiologic activities (e.g., fetal development, immune and endocrine systems). Although the levels of some POPs [polychlorinated bi...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.0800205

    authors: Doucet J,Tague B,Arnold DL,Cooke GM,Hayward S,Goodyer CG

    更新日期:2009-04-01 00:00:00

  • Early-life cadmium exposure and child development in 5-year-old girls and boys: a cohort study in rural Bangladesh.

    abstract:BACKGROUND:Cadmium is a commonly occurring toxic food contaminant, but health consequences of early-life exposure are poorly understood. OBJECTIVES:We evaluated the associations between cadmium exposure and neurobehavioral development in preschool children. METHODS:In our population-based mother-child cohort study in...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1104431

    authors: Kippler M,Tofail F,Hamadani JD,Gardner RM,Grantham-McGregor SM,Bottai M,Vahter M

    更新日期:2012-10-01 00:00:00

  • Role of TET Dioxygenases and DNA Hydroxymethylation in Bisphenols-Stimulated Proliferation of Breast Cancer Cells.

    abstract:BACKGROUND:Bisphenol A (BPA), a ubiquitous environmental endocrine disruptor targeting estrogen receptors (ERs), has been implicated in the promotion of breast cancer. Perinatal exposure of BPA could induce longitudinal alteration of DNA hydroxymethylation in imprinted loci of mouse blood cells. To date, no data has be...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/EHP5862

    authors: Li Z,Lyu C,Ren Y,Wang H

    更新日期:2020-02-01 00:00:00

  • An exploration of ethical issues in research in children's health and the environment.

    abstract::The consideration of ethical issues relating to pediatric environmental health is a recent phenomenon. Discussions of biomedical ethics, research on children, and environmental health research have a longer history. In the late 1990s, researchers at the Kennedy Krieger Institute in Baltimore, Maryland, undertook a stu...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.9000

    authors: Paulson JA

    更新日期:2006-10-01 00:00:00

  • Myeloid leukemia after hematotoxins.

    abstract::One of the most serious consequences of cancer therapy is the development of a second cancer, especially leukemia. Several distinct subsets of therapy-related leukemia can now be distinguished. Classic therapy-related myeloid leukemia typically occurs 5 to 7 years after exposure to alkylating agents and/or irradiation...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.961041303

    authors: Larson RA,LeBeau MM,Vardiman JW,Rowley JD

    更新日期:1996-12-01 00:00:00

  • Analysis of dietary intake of selected metals in the NHEXAS-Maryland investigation.

    abstract::As part of a large pilot investigation of multimedia exposure to several classes of environmental contaminants, the National Human Exposure Assessment Survey (NHEXAS)-Maryland study, we collected 388 semiquantitative food checklists and duplicate diet solid food samples, analyzed for arsenic, cadmium, chromium, and le...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.01109121

    authors: Ryan PB,Scanlon KA,MacIntosh DL

    更新日期:2001-02-01 00:00:00

  • Structural and functional changes in acute liver injury.

    abstract::Carbon tetrachloride produces liver cell injury in a variety of animal species. The first structurally recognizable changes occur in the endoplasmic reticulum, with alteration in ribosome-membrane interactions. Later there is an increase in intracellular fat, and the formation of tangled nets of the ergastoplasm. At n...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.761513

    authors: Smuckler EA

    更新日期:1976-06-01 00:00:00

  • Neurochemistry and toxicology: overview.

    abstract::We have witnessed a tremendous increase in our knowledge of the molecular and biochemical mechanisms which underly the activities of the nervous system. Such knowledge is essential in order to determine the basic mechanisms involved in neurotoxic events. An overview of how neurotoxins could conceivably interfere with ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.7826121

    authors: Damstra T

    更新日期:1978-10-01 00:00:00

  • Lessons from a Danish study on neuropsychological impairment related to lead exposure.

    abstract::Serious problems emerge when evaluating evidence on lead neurotoxicity in children. The extent of these problems and ways to control them were explored in a study of 1291 children from the first class in the schools of Aarhus municipality, Denmark. The lead retention in circumpulpal dentin in shed deciduous teeth was ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.94-1567959

    authors: Grandjean P,Lyngbye T,Hansen ON

    更新日期:1991-08-01 00:00:00

  • Concepts, labeling procedures, and design of cell proliferation studies relating to carcinogenesis.

    abstract::Chemicals may induce cell proliferation directly as mitogens or indirectly via cell death with subsequent proliferation to replace lost cells. Chemically induced proliferation has been demonstrated to play a role in the carcinogenic process. A wide range of procedures and techniques are currently being used to define ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.93101s559

    authors: Goldsworthy TL,Butterworth BE,Maronpot RR

    更新日期:1993-12-01 00:00:00

  • Epidemiology of fine particulate air pollution and human health: biologic mechanisms and who's at risk?

    abstract::This article briefly summarizes the epidemiology of the health effects of fine particulate air pollution, provides an early, somewhat speculative, discussion of the contribution of epidemiology to evaluating biologic mechanisms, and evaluates who's at risk or is susceptible to adverse health effects. Based on prelimin...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.108-1637679

    authors: Pope CA 3rd

    更新日期:2000-08-01 00:00:00

  • Assessing potential health risks from microcystin toxins in blue-green algae dietary supplements.

    abstract::The presence of blue-green algae (BGA) toxins in surface waters used for drinking water sources and recreation is receiving increasing attention around the world as a public health concern. However, potential risks from exposure to these toxins in contaminated health food products that contain BGA have been largely ig...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.00108435

    authors: Gilroy DJ,Kauffman KW,Hall RA,Huang X,Chu FS

    更新日期:2000-05-01 00:00:00

  • Diet contributes significantly to the body burden of PBDEs in the general U.S. population.

    abstract:BACKGROUND:Exposure of the U.S. population to polybrominated diphenyl ethers (PBDEs) is thought to be via exposure to dust and diet. However, little work has been done to empirically link body burdens of these compounds to either route of exposure. OBJECTIVES:The primary goal of this research was to evaluate the dieta...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.0900817

    authors: Fraser AJ,Webster TF,McClean MD

    更新日期:2009-10-01 00:00:00

  • Outdoor Light at Night and Breast Cancer Incidence in the Nurses' Health Study II.

    abstract:BACKGROUND:Animal and epidemiologic studies suggest that exposure to light at night (LAN) may disrupt circadian patterns and decrease nocturnal secretion of melatonin, which may disturb estrogen regulation, leading to increased breast cancer risk. OBJECTIVES:We examined the association between residential outdoor LAN ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/EHP935

    authors: James P,Bertrand KA,Hart JE,Schernhammer ES,Tamimi RM,Laden F

    更新日期:2017-08-17 00:00:00

  • Instrumentation for negative ion detection.

    abstract::The instrumentation and practical circuitry required for the detection of negative ions exiting the mass analysis section of a mass spectrometer is examined. The potentials needed to bias the electron multiplier when detecting negative ions from a low ion-energy mass spectrometer, e.g., a quadrupole, are contrasted wi...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.803697

    authors: McKeown M

    更新日期:1980-06-01 00:00:00

  • May 2006 NEIHS News.

    abstract::Short articles on the following topics: *NIEHS Strategic Plan: New Frontiers in Environmental Sciences and Human Health; Beyond the Bench: Environmental Health Nursing: Putting Knowledge into Practice; Headliners: Inhibition of RLIP76 Causes Complete Regression of Melanoma in Mice. ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:

    authors: Hood E,Tillett T,Phelps J

    更新日期:2006-05-01 00:00:00

  • Within-Day, Between-Day, and Between-Week Variability of Urinary Concentrations of Phenol Biomarkers in Pregnant Women.

    abstract:BACKGROUND:Toxicology studies have shown adverse effects of developmental exposure to industrial phenols. Evaluation in humans is challenged by potentially marked within-subject variability of phenol biomarkers in pregnant women, which is poorly characterized. OBJECTIVES:We aimed to characterize within-day, between-da...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/EHP1994

    authors: Vernet C,Philippat C,Calafat AM,Ye X,Lyon-Caen S,Siroux V,Schisterman EF,Slama R

    更新日期:2018-03-16 00:00:00

  • Engineering and operating approaches for controlling asbestos fibers in drinking water.

    abstract::Techniques are available to minimize the concentration of asbestos fibers in drinking water. Filtration research conducted at locations on Lake Superior and in the Cascade Mountains in Washington has shown that amphibole and chrysotile fibers can be removed by granular media filtration. Removal percentages can exceed ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.8353169

    authors: Logsdon GS

    更新日期:1983-11-01 00:00:00

  • DNA adduct measurements and tumor incidence during chronic carcinogen exposure in rodents.

    abstract::In an attempt to elucidate the relationship between DNA adduct formation and tumorigenesis, DNA adducts were measured in the livers and bladders of mice during chronic exposure to several different doses of 2-acetylaminofluorene (2-AAF) and 4-aminobiphenyl (4-ABP). Continuous oral administration of these compounds for...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.94102s6161

    authors: Poirier MC,Beland FA

    更新日期:1994-10-01 00:00:00

  • GSTP1 and TNF Gene variants and associations between air pollution and incident childhood asthma: the traffic, asthma and genetics (TAG) study.

    abstract:BACKGROUND:Genetics may partially explain observed heterogeneity in associations between traffic-related air pollution and incident asthma. OBJECTIVE:Our aim was to investigate the impact of gene variants associated with oxidative stress and inflammation on associations between air pollution and incident childhood ast...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1307459

    authors: MacIntyre EA,Brauer M,Melén E,Bauer CP,Bauer M,Berdel D,Bergström A,Brunekreef B,Chan-Yeung M,Klümper C,Fuertes E,Gehring U,Gref A,Heinrich J,Herbarth O,Kerkhof M,Koppelman GH,Kozyrskyj AL,Pershagen G,Postma DS,Th

    更新日期:2014-04-01 00:00:00

  • Effects of noise and electromagnetic fields on reproductive outcomes.

    abstract::Much public health research has been directed to studies of cancer risks due to chemical agents. Recently, increasing attention has been given to adverse reproductive outcomes as another, shorter-term biologic indicator of public health impact. Further, several low-level ubiquitous physical agents have been implicated...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.8981193

    authors: Meyer RE,Aldrich TE,Easterly CE

    更新日期:1989-05-01 00:00:00

  • Factors affecting Sertoli cell function in the testis.

    abstract::The Sertoli cell is the primary target for FSH action in the mammalian testis. These cells contain the majority of testicular plasma membrane receptors for this hormone. Receptor occupancy is directly correlated with a stimulation of adenylyl cyclase and a decrease in the activity of a cytoplasmic Ca++-sensitive cAMP ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.81385

    authors: Tindall DJ,Tash JS,Means AR

    更新日期:1981-04-01 00:00:00

  • p53 Plays an important role in cell fate determination after exposure to microcystin-LR.

    abstract:BACKGROUND:Microcystin-LR, a cyclic heptapeptide, possesses the ability to inhibit the serine/threonine protein phosphatases PP1 and PP2A and, consequently, exhibits acute hepatocytotoxicity. Moreover, microcystin-LR induces cellular proliferation, resulting in tumor-promoting activity in hepatocytes. However, mechanis...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1001899

    authors: Takumi S,Komatsu M,Furukawa T,Ikeda R,Sumizawa T,Akenaga H,Maeda Y,Aoyama K,Arizono K,Ando S,Takeuchi T

    更新日期:2010-09-01 00:00:00

  • Occupational Pesticide Use and Risk of Renal Cell Carcinoma in the Agricultural Health Study.

    abstract:BACKGROUND:Agricultural work and occupational pesticide use have been associated with increased risk of renal cell carcinoma (RCC), the most common form of kidney cancer. However, few prospective studies have investigated links to specific pesticides. OBJECTIVE:We evaluated the lifetime use of individual pesticides an...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/EHP6334

    authors: Andreotti G,Beane Freeman LE,Shearer JJ,Lerro CC,Koutros S,Parks CG,Blair A,Lynch CF,Lubin JH,Sandler DP,Hofmann JN

    更新日期:2020-06-01 00:00:00

  • Polychlorinated biphenyls, lead, and mercury are associated with liver disease in American adults: NHANES 2003-2004.

    abstract:BACKGROUND:High-level occupational exposures to some industrial chemicals have been associated with liver diseases, including nonalcoholic fatty liver disease (NAFLD). However, the potential role of low-level environmental pollution on liver disease in the general population has not been evaluated. OBJECTIVE:We determ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1002720

    authors: Cave M,Appana S,Patel M,Falkner KC,McClain CJ,Brock G

    更新日期:2010-12-01 00:00:00