Seasonal influences on childhood lead exposure.

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：BACKGROUND:Methylmercury (MeHg), a worldwide contaminant found in fish and seafood, has been linked to an increased risk of cardiovascular mortality. OBJECTIVE:We examined 42 Faroese whaling men (30-70 years of age) to assess possible adverse effects within a wide range of MeHg exposures from consumption of pilot whal...

journal_title：Environmental health perspectives

authors： Choi AL,Weihe P,Budtz-Jørgensen E,Jørgensen PJ,Salonen JT,Tuomainen TP,Murata K,Nielsen HP,Petersen MS,Askham J,Grandjean P

更新日期：2009-03-01 00:00:00

abstract：BACKGROUND:Methylmercury (MeHg) exposure assessments among average fish consumers in the United States may underestimate exposures among U.S. subpopulations with high intakes of regionally specific fish. OBJECTIVES:We examined relationships among fish consumption, estimated mercury (Hg) intake, and measured Hg exposur...

journal_title：Environmental health perspectives

authors： Lincoln RA,Shine JP,Chesney EJ,Vorhees DJ,Grandjean P,Senn DB

更新日期：2011-02-01 00:00:00

abstract：:The pneumoconioses are associated with chronic inflammatory processes during which increased amounts of reactive oxygen species are formed in the lower respiratory tract. To characterize the effect(s) of these processes on the defense system against free radicals, we studied 91 individuals with long-term occupational ...

journal_title：Environmental health perspectives

authors： Engelen JJ,Borm PJ,van Sprundel M,Leenaerts L

更新日期：1990-03-01 00:00:00

abstract：:High-dose boric acid (BA) exposure produces testicular lesions in adult rats characterized by inhibited spermiation (IS) that may progress to atrophy. In vivo and in vitro studies addressed possible mechanisms. In vivo, boron tissue disposition was examined, since no detailed data existed, and relevant boron concentra...

journal_title：Environmental health perspectives

authors： Ku WW,Chapin RE

更新日期：1994-11-01 00:00:00

abstract：:A system suitable for the detection of meiotic aneuploidy is described in which various different origins of the aneuploidy can be distinguished. Aneuploid meiotic products are detected as black disomic spores held in asci containing all the products of a single meiosis. Aneuploidy may result from nondisjunction or fr...

journal_title：Environmental health perspectives

authors： Bond DJ,McMillan L

更新日期：1979-08-01 00:00:00

abstract：:It has been previously established that lung cancer could be induced in rats by exposure to radon and radon daughters. Although the oat-cell carcinomas that are common in humans were not found in rats, other histological types of lung carcinomas, especially squamous cell carcinomas and primitive lung adenocarcinomas, ...

journal_title：Environmental health perspectives

authors： Monchaux G,Morlier JP,Morin M,Chameaud J,Lafuma J,Masse R

更新日期：1994-01-01 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：:An intercomparison exercise was conducted for the quantification of arsenic species in spiked human urine. The primary objective of the exercise was to determine the variance among laboratories in the analysis of arsenic species such as inorganic As (As+3 and As+5), monomethylarsonic acid (MMA), and dimethylarsinic ac...

journal_title：Environmental health perspectives

authors： Crecelius E,Yager J

更新日期：1997-06-01 00:00:00

abstract：:The risk assessment process is described with a focus on the hazard identification and dose-response components. Many of the scientific questions and uncertainties associated with these components are discussed, and the role for biomarkers and specimen banking in supporting these activities are assessed. Under hazard ...

journal_title：Environmental health perspectives

authors： Zenick H,Griffith J

更新日期：1995-04-01 00:00:00

abstract：:In 1998, the Helicobacter pylori [(13)C]urea breath test was offered to all school beginners (birth cohort 1991/1992) in the city of Leipzig and in Leipzig County, Germany, to determine the colonization prevalence and potential transmission pathways of the bacterium. A total of 3,347 school beginners participated in t...

journal_title：Environmental health perspectives

authors： Herbarth O,Krumbiegel P,Fritz GJ,Richter M,Schlink U,Müller DM,Richter T

更新日期：2001-06-01 00:00:00

abstract：:Of 240 pesticides screened for carcinogenicity by the U.S. Environmental Protection Agency Office of Pesticide Programs, at least 24 (10%) produce thyroid follicular cell tumors in rodents. Thirteen of the thyroid carcinogens also induce liver tumors, mainly in mice, and 9 chemicals produce tumors at other sites. Some...

journal_title：Environmental health perspectives

authors： Hurley PM

更新日期：1998-08-01 00:00:00

abstract：:Several examples of categorized data from epidemiological studies are analyzed to illustrate that more informative analysis than tests of independence can be performed by fitting models. All of the analyses fit into a unified conceptual framework that can be performed by weighted least squares. The methods presented s...

journal_title：Environmental health perspectives

authors： Grizzle JE,Koch GG

更新日期：1979-10-01 00:00:00

abstract：:In this article we summarize the results of a series of studies that measured the relative bioavailability (RBA) of lead in a variety of soil and soil-like test materials. Reference material (Pb acetate) or Pb-contaminated soils were administered orally to juvenile swine twice a day for 15 days. Blood samples were col...

journal_title：Environmental health perspectives

authors： Casteel SW,Weis CP,Henningsen GM,Brattin WJ

更新日期：2006-08-01 00:00:00

abstract：:Exposure of the scallop Placopecten magellanicus to 20 ppb Cd2+ in seawater for 7 weeks results in a 7-fold increase in the kidney cytosol content of Cd and 5-fold increase in Zn. Sephadex G-75 column chromatography of the kidney cytosol showed that most of the Cd and Zn were bound to a protein complex with an estimat...

journal_title：Environmental health perspectives

authors： Fowler BA,Megginson MM

更新日期：1986-03-01 00:00:00

abstract：:Pheromones are substances emitted by one individual of a species and eliciting a specific response in a second individual of the same species. In moths (Lepidoptera) generally females lure males for mating by emission of a sex attractant pheromone comprised of either one or more components. Since 1966 the identificati...

journal_title：Environmental health perspectives

authors： Cardé RT

更新日期：1976-04-01 00:00:00

abstract：:Interleukin-3 (IL-3) and granulocyte/macrophage-colony-stimulating factor (GM-CSF) are responsible for maintaining survival and stimulating growth of early dormant hematopoietic progenitor cells (HPC). These cytokines exhibit extensive overlap, with GM-CSF supporting growth and differentiation of myeloid HPC. A charac...

journal_title：Environmental health perspectives

authors： Irons RD,Stillman WS

更新日期：1996-12-01 00:00:00

abstract：:Mineral fibers and particulates represent one of the best documented, economically important, and ubiquitously occurring categories of human carcinogens. Yet, while a wealth of information exists concerning the mechanism of action of physical, chemical, and viral carcinogens, virtually nothing is known relative to the...

journal_title：Environmental health perspectives

authors： Hart RW,Daniel FB,Kindig OR,Beach CA,Joseph LB,Wells RC

更新日期：1980-02-01 00:00:00

abstract：:A comprehensive effort was undertaken to identify articles demonstrating chemical hormesis. Nearly 4000 potentially relevant articles were retrieved from preliminary computer database searches by using various key word descriptors and extensive cross-referencing. A priori evaluation criteria were established including...

journal_title：Environmental health perspectives

authors： Calabrese EJ,Baldwin LA

更新日期：1998-02-01 00:00:00

abstract：:Human milk is a repository for certain classes of long-lived, fat-soluble environmental contaminant chemicals. Some members of this class, such as the chlorinated pesticides and the chlorinated biphenyls, can be expected to be present at chemical waste disposal sites. Analysis of samples of breast milk obtained from w...

journal_title：Environmental health perspectives

authors： Rogan W,Gladen B

更新日期：1983-02-01 00:00:00

abstract：:Cofactors involved in respiratory tract carcinogenesis were studied in Syrian golden hamsters or in rats using benzo(a)pyrene as the carcinogenic agent. These factors included severe tissue damage induced by electro-coagulation, glass fibers administered by intratracheal instillation, acetaldehyde as irritant vapor, f...

journal_title：Environmental health perspectives

authors： Reuzel PG,Feron VJ,Spit BJ,Beems RB,Kroes R

更新日期：1983-04-01 00:00:00

abstract：:In numerous in vivo systems it has been shown that diets high in menhaden oil (a fish oil high in omega-3 fatty acids) can inhibit the carcinogenic process. In the present study, we have assessed the effects of a diet containing menhaden oil on 2-amino-3-methylimidazo[4,5-f]quinoline (IQ)-DNA adduct formation in targe...

journal_title：Environmental health perspectives

authors： Schut HA

更新日期：1994-10-01 00:00:00

abstract：:In this study we investigated the risk of hearing loss among workers exposed to both toluene and noise. We recruited 58 workers at an adhesive materials manufacturing plant who were exposured to both toluene and noise [78.6-87.1 A-weighted decibels; dB(A)], 58 workers exposed to noise only [83.5-90.1 dB(A)], and 58 ad...

journal_title：Environmental health perspectives

authors： Chang SJ,Chen CJ,Lien CH,Sung FC

更新日期：2006-08-01 00:00:00

abstract：:The gas phase reactions of carbanions with molecular oxygen in both its ground state (X3 sigma g-) and first electronically excited state (a1 delta g) have been studied by the flowing afterglow technique. Reactions include cleavage processes, charge transfer, hydride transfer, formation of hydroxide ion and processes ...

journal_title：Environmental health perspectives

authors： Bierbaum VM,Schmitt RJ,DePuy CH

更新日期：1980-06-01 00:00:00

abstract：:The lungs may be exposed to potentially toxic metabolites that are either formed in situ or which are present in the circulation. Therefore, pulmonary injury may be a prominent effect of certain classes of chemicals that undergo bioactivation in the body. The specific types of lung cells damaged may depend upon factor...

journal_title：Environmental health perspectives

authors： Boyd MR

更新日期：1984-04-01 00:00:00

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

authors： Goldsworthy TL,Butterworth BE,Maronpot RR

更新日期：1993-12-01 00:00:00

abstract：:We assessed chlorinated hydrocarbon contamination of mink and river otters on the Columbia and Fraser River systems of northwestern North America, in relation to morphological measures of condition. We obtained carcasses of mink and river otters from commercial trappers during the winters 1994-1995 and 1995-1996. Necr...

journal_title：Environmental health perspectives

authors： Harding LE,Harris ML,Stephen CR,Elliott JE

更新日期：1999-02-01 00:00:00

abstract：:In August 1997 we performed a follow-up survey of 146 lead-poisoned children from a community near a previously active auto battery recycling smelter in Haina near Santo Domingo, Dominican Republic. Our follow-up survey confirmed a severe incidence of elevated blood lead (BPb) and erythrocyte protoporphyrin/zinc proto...

journal_title：Environmental health perspectives

authors： Kaul B,Sandhu RS,Depratt C,Reyes F

更新日期：1999-11-01 00:00:00

abstract：BACKGROUND:C60 fullerenes and single-walled carbon nanotubes (SWCNT) are projected to be used in medicine and consumer products with potential human exposure. The hazardous effects of these particles are expected to involve oxidative stress with generation of oxidatively damaged DNA that might be the initiating event i...

journal_title：Environmental health perspectives

authors： Folkmann JK,Risom L,Jacobsen NR,Wallin H,Loft S,Møller P

更新日期：2009-05-01 00:00:00

abstract：:Chemicals, including commonly used drugs (e.g., penicillin, meprobamate, pyridium, and mercaptomerin) penetrate and persist for some time in the ovarian follicular fluid at concentrations approximately similar to that of the serum. Information as to the penetration of chemicals into the granulosa cells and into the oo...

journal_title：Environmental health perspectives

authors： Fabro S

更新日期：1978-06-01 00:00:00