Metabolic activation of toxins: tissue-specific expression and metabolism in target organs.

abstract：BACKGROUND:Previous studies indicate that the design of streets and sidewalks can influence physical activity among residents. Park features also influence park use and park-based physical activity. Although individuals can walk on streets and sidewalks, walking loops in parks offer a setting to walk in nature and to a...

journal_title：Environmental health perspectives

authors： Cohen DA,Han B,Evenson KR,Nagel C,McKenzie TL,Marsh T,Williamson S,Harnik P

更新日期：2017-02-01 00:00:00

abstract：:Metals have been mined and used since ancient times. The industrial era has seen a sharp increase in both the amounts and variety of metals that find applications in industry. The inadvertent release of metals, such as from fossil fuel consumption, also adds to the global burden. A number of catastrophic outbreaks hav...

journal_title：Environmental health perspectives

authors： Clarkson T

更新日期：1995-02-01 00:00:00

abstract：:An association between human illness and exposure to Pfiesteria was first observed among laboratory personnel working with the microorganism. In 1997, in the setting of Pfiesteria activity on the Pocomoke River in Maryland, difficulties with learning and memory were epidemiologically associated with high-level exposur...

journal_title：Environmental health perspectives

authors： Morris JG Jr

更新日期：2001-10-01 00:00:00

abstract：:Perinatal exposure to carcinogens may contribute to the determination of susceptibility to cancer in two situations: a) exposure in utero of embryonal or fetal somatic cells to carcinogens, and b) prezygotic exposure of the germ cells of one or both parents to carcinogens. Epidemiological as well as experimental studi...

journal_title：Environmental health perspectives

authors： Yamasaki H,Loktionov A,Tomatis L

更新日期：1992-11-01 00:00:00

abstract：:The discovery of the potent mutagenicity of AF-2, which was once used in Japan as a food preservative, has exerted a great influence not only on screening procedures for carcinogenic compounds but also on legislative approaches to mutagenic substances. It promoted the synthesis of exceedingly sensitive and reliable te...

journal_title：Environmental health perspectives

authors： Tazima Y

更新日期：1979-04-01 00:00:00

abstract：:Impairment of any of the major components of the immune system (T-cells, B-cells phagocytes, complement) may result in clinical immunodeficiency. Immune defects can arise from intrinsic or heritable defects of lymphoid elements, failure of normal cellular differentiation, viral infection or other acquired causes. Clin...

journal_title：Environmental health perspectives

authors： Heise ER

更新日期：1982-02-01 00:00:00

abstract：BACKGROUND:The 2008 Beijing Olympic Games provided a unique case study to investigate the effect of source control measures on the reduction in air pollution, and associated inhalation cancer risk, in a Chinese megacity. OBJECTIVES:We measured 17 carcinogenic polycyclic aromatic hydrocarbons (PAHs) and estimated the l...

journal_title：Environmental health perspectives

authors： Jia Y,Stone D,Wang W,Schrlau J,Tao S,Simonich SL

更新日期：2011-06-01 00:00:00

abstract：BACKGROUND:Although many studies have examined the effects of air pollution on mortality, data limitations have resulted in fewer studies of both particulate matter with an aerodynamic diameter of 2.5 and < 10 mi...

journal_title：Environmental health perspectives

authors： Zanobetti A,Schwartz J

更新日期：2009-06-01 00:00:00

abstract：BACKGROUND:Prostaglandins (PGs) play key roles in development and maintenance of homeostasis of the adult body. Despite these important roles, it remains unclear whether the PG pathway is a target for endocrine disruption. However, several known endocrine-disrupting compounds (EDCs) share a high degree of structural si...

journal_title：Environmental health perspectives

authors： Kristensen DM,Skalkam ML,Audouze K,Lesné L,Desdoits-Lethimonier C,Frederiksen H,Brunak S,Skakkebæk NE,Jégou B,Hansen JB,Junker S,Leffers H

更新日期：2011-04-01 00:00:00

abstract：:The in vivo micronucleus assay can be analyzed by comparing the number of micronuclei (MN) of several dose groups with those of a control group. In several publications, difficulties arose in estimating a suitable distribution for MN, even in the untreated historical control groups. Mitchell et al. described the prese...

journal_title：Environmental health perspectives

authors： Hothorn L

更新日期：1994-01-01 00:00:00

abstract：:The effects of chrysotile on DNA synthesis in the gastrointestinal tract of the rat were studied by measuring the uptake of tritium-labeled thymidine; whole stomach, small intestine, colon liver were removed, cleaned, and homogenized and the DNA was isolated and assayed for tritium label.A dose-response study indicate...

journal_title：Environmental health perspectives

authors： Amacher DE,Alarif A,Epstein SS

更新日期：1974-12-01 00:00:00

abstract：BACKGROUND:Phthalates comprise a large class of chemicals used in a variety of consumer products. Several have anti-androgenic properties, and in rodents prenatal exposure has been associated with reduced anogenital distance (AGD)-the distance from the anus to the genitals in male offspring. Few human studies have been...

journal_title：Environmental health perspectives

authors： Jensen TK,Frederiksen H,Kyhl HB,Lassen TH,Swan SH,Bornehag CG,Skakkebaek NE,Main KM,Lind DV,Husby S,Andersson AM

更新日期：2016-07-01 00:00:00

abstract：:Asthma and lead poisoning are prevalent among urban children in the United States. Lead exposure may be associated with excessive production of immunoglobulin E, possibly increasing asthma risk and contributing to racial disparities. The objective of this study was to examine racial differences in the association of b...

journal_title：Environmental health perspectives

authors： Joseph CL,Havstad S,Ownby DR,Peterson EL,Maliarik M,McCabe MJ Jr,Barone C,Johnson CC

更新日期：2005-07-01 00:00:00

abstract：:Although para-nonylphenol (NP) is known as an endocrine disruptor, the immunologic effect of NP has been poorly analyzed. We found that NP from 5 to 50 microM caused a dose-dependent stimulatory effect on the generation of reactive oxygen species (ROS) in human blood neutrophils, which was measured by using a chemilum...

journal_title：Environmental health perspectives

authors： Okai Y,Sato EF,Higashi-Okai K,Inoue M

更新日期：2004-04-01 00:00:00

abstract：:The potential danger of natural mercury accumulation in the diet of the Eskimo is evaluated through mercury levels determined in cord blood, placenta, maternal blood, hair, and milk of 38 maternal-infant pairs from Anchorage and the Yukon-Kuskokwim Delta. Although mercury levels are not discernably dangerous, trends t...

journal_title：Environmental health perspectives

authors： Galster WA

更新日期：1976-06-01 00:00:00

abstract：:Molecular epidemiology has significant potential in preventing cancer and other diseases caused by environmental exposures (related to lifestyle, occupation, or ambient pollution). This approach attempts to prevent cancer by incorporating laboratory methods to document the molecular dose and preclinical effects of car...

journal_title：Environmental health perspectives

authors： Perera FP,Mooney LA,Dickey CP,Santella RM,Bell D,Blaner W,Tang D,Whyatt RM

更新日期：1996-05-01 00:00:00

abstract：:Lead is a male reproductive toxicant. Data suggest that rats dosed with relatively high levels of lead acetate for short periods of time induced changes in the hypothalamic gonadotropin-releasing hormone (GnRH) at the molecular level, but these changes were attenuated with increased concentration of exposure. The curr...

journal_title：Environmental health perspectives

authors： Sokol RZ,Wang S,Wan YJ,Stanczyk FZ,Gentzschein E,Chapin RE

更新日期：2002-09-01 00:00:00

abstract：:Exposure of rats to quartz (or various other particles) can lead to the development of lung tumors. At the moment, the mechanisms involved in particle-induced tumor formation are not clarified. However, it is suggested that inflammation, in conjunction with the production of reactive oxygen species (ROS) and an enhanc...

journal_title：Environmental health perspectives

authors： Nehls P,Seiler F,Rehn B,Greferath R,Bruch J

更新日期：1997-09-01 00:00:00

abstract：OBJECTIVE:Daily adult human exposure to bisphenol A (BPA) has been estimated at <1 µg/kg, with virtually complete first-pass conjugation in the liver in primates but not in mice. We measured unconjugated and conjugated BPA levels in serum from adult female rhesus monkeys and adult female mice after oral administration ...

journal_title：Environmental health perspectives

authors： Taylor JA,Vom Saal FS,Welshons WV,Drury B,Rottinghaus G,Hunt PA,Toutain PL,Laffont CM,VandeVoort CA

更新日期：2011-04-01 00:00:00

abstract：:Our work has focused on the determination of physiological traits that may facilitate in situ degradation of xenobiotic compounds by indigenous microorganisms. For this our interests center on the following questions: What are the ambient conditions in a benzene, toluene, ethylbenzene, and xylene (BTEX)-contaminated a...

journal_title：Environmental health perspectives

authors： Olsen RH,Mikesell MD,Kukor JJ,Byrne AM

更新日期：1995-06-01 00:00:00

abstract：BACKGROUND:Agricultural use of antimicrobials in subtherapeutic concentrations is increasing in response to the rising demand for food animal products worldwide. In India, the use of antimicrobials in food animal production is unregulated. Research suggests that many clinically important antimicrobials are used indiscr...

journal_title：Environmental health perspectives

authors： Brower CH,Mandal S,Hayer S,Sran M,Zehra A,Patel SJ,Kaur R,Chatterjee L,Mishra S,Das BR,Singh P,Singh R,Gill JPS,Laxminarayan R

更新日期：2017-07-20 00:00:00

abstract：:The purpose of the investigation is to study whether an increased mortality from certain causes exists in an area around the Rönnskärsverken smelter works in northern Sweden. Founded in 1928, this metallurgical plant processing mainly nonferrous metals has since its initial operations been using ore with a high arseni...

journal_title：Environmental health perspectives

authors： Pershagen G,Elinder CG,Bolander AM

更新日期：1977-08-01 00:00:00

abstract：:In this study, we determined the biologic activity of dichloromethane-extracted particulate matter < 10 micro m in aerodynamic diameter (PM10) obtained from filters at three sites in the Paso del Norte airshed, which includes El Paso, Texas, USA; Juarez, Chihuahua, Mexico, and Sunland Park, New Mexico, USA. The extrac...

journal_title：Environmental health perspectives

authors： Arrieta DE,Ontiveros CC,Li WW,Garcia JH,Denison MS,McDonald JD,Burchiel SW,Washburn BS

更新日期：2003-08-01 00:00:00

abstract：:We assessed the reproducibility of X-ray fluorescence-based lead measurements from multiple measurements made on a low-concentration plaster of paris phantom and in five subjects measured five times on two occasions. Over a 6-month period, 220 measurements of the same phantom were obtained and showed a standard deviat...

journal_title：Environmental health perspectives

authors： Gordon CL,Webber CE,Chettle DR

更新日期：1994-08-01 00:00:00

abstract：OBJECTIVE:Animal feeding practices in the United States have changed considerably over the past century. As large-scale, concentrated production methods have become the predominant model for animal husbandry, animal feeds have been modified to include ingredients ranging from rendered animals and animal waste to antibi...

journal_title：Environmental health perspectives

authors： Sapkota AR,Lefferts LY,McKenzie S,Walker P

更新日期：2007-05-01 00:00:00

abstract：BACKGROUND:The relationship of fine particulate matter < 2.5 microm in diameter (PM(2.5)) air pollution with mortality and cardiovascular disease is well established, with more recent long-term studies reporting larger effect sizes than earlier long-term studies. Some studies have suggested the coarse fraction, particl...

journal_title：Environmental health perspectives

authors： Puett RC,Hart JE,Yanosky JD,Paciorek C,Schwartz J,Suh H,Speizer FE,Laden F

更新日期：2009-11-01 00:00:00

abstract：:In these studies the effects of ingested arsenic (As(+5)) on hepatic heme biosynthetic capability and hemoprotein function in adult male rats were investigated. Animals exposed for 6 weeks to 0, 20, 40, or 85 ppm sodium arsenate in the drinking water suffered depression of hepatic delta-aminolevulinic acid (ALA) synth...

journal_title：Environmental health perspectives

authors： Woods JS,Fowler BA

更新日期：1977-08-01 00:00:00

abstract：:Environmental estrogens are of particular concern when exposure occurs during embryonic development. Although there are good models to study estrogenic activity of chemicals in adult animals, developmental exposure is much more difficult to test. The weak estrogenic activity of the environmental estrogen bisphenol A (...

journal_title：Environmental health perspectives

authors： Lemmen JG,Arends RJ,van der Saag PT,van der Burg B

更新日期：2004-11-01 00:00:00

abstract：:Because of rampant concern that estrogenic chemicals in the environment may be adversely affecting the health of humans and wildlife, reliable methods for detecting and characterizing estrogenic chemicals are needed. It is important that general agreement be reached on which tests to use and that these tests then be a...

journal_title：Environmental health perspectives

authors： Shelby MD,Newbold RR,Tully DB,Chae K,Davis VL

更新日期：1996-12-01 00:00:00

abstract：:This paper reports on the prevalence of lead poisoning in children between 1 and 5 years of age living in a marginal area to the north of Mexico City and also includes an evaluation of sources of exposure to this metal in the same area. The results show that 67.5% of the children studied have blood lead (PbB) levels >...

journal_title：Environmental health perspectives

authors： López-Carrillo L,Torres-Sánchez L,Garrido F,Papaqui-Hernández J,Palazuelos-Rendón E,López-Cervantes M

更新日期：1996-11-01 00:00:00