Methods to identify and characterize developmental neurotoxicity for human health risk assessment. III: pharmacokinetic and pharmacodynamic considerations.

abstract：BACKGROUND:Organophosphate developmental neurotoxicity involves multiple mechanisms converging on neural cell replication and differentiation. OBJECTIVES:We evaluated mechanisms contributing to the adverse effects of chlorpyrifos (CPF) on DNA synthesis, cell number and size, and cell signaling mediated by adenylyl cyc...

journal_title：Environmental health perspectives

authors： Slotkin TA,MacKillop EA,Ryde IT,Seidler FJ

更新日期：2007-09-01 00:00:00

abstract：:In vivo bone lead measurement using K X-ray fluorescence (KXRF) has been used to estimate long-term lead exposure, especially in adults. Relatively few studies have been conducted on young subjects with this technique. To explore the measurement variability of KXRF bone lead measurements in young subjects, the tibiae ...

journal_title：Environmental health perspectives

authors： Hoppin JA,Aro A,Hu H,Ryan PB

更新日期：2000-03-01 00:00:00

abstract：BACKGROUND:Tungsten carbide nanoparticles are being explored for their use in the manufacture of hard metals. To develop nanoparticles for broad applications, potential risks to human health and the environment should be evaluated and taken into consideration. OBJECTIVE:We aimed to assess the toxicity of well-characte...

journal_title：Environmental health perspectives

authors： Bastian S,Busch W,Kühnel D,Springer A,Meissner T,Holke R,Scholz S,Iwe M,Pompe W,Gelinsky M,Potthoff A,Richter V,Ikonomidou C,Schirmer K

更新日期：2009-04-01 00:00:00

abstract：:This study was undertaken to explore the effects of chronic low-level cadmium ingestion in Dahl hypertension-resistant (R) and hypertension-sensitive (S) lines of rats. Groups of weanling female R and S rats were given 0 or 1 mg cadmium/1. in drinking water and fed either a low salt (0.4% NaCl) or a high salt (4% NaCl...

journal_title：Environmental health perspectives

authors： Ohanian EV,Iwai J

更新日期：1979-02-01 00:00:00

abstract：BACKGROUND:Modern toxicology is shifting from an observational to a mechanistic science. As part of this shift, high-throughput toxicity assays are being developed using alternative, nonmammalian species to prioritize chemicals and develop prediction models of human toxicity. METHODS:The nematode Caenorhabditis elegan...

journal_title：Environmental health perspectives

authors： Boyd WA,Smith MV,Co CA,Pirone JR,Rice JR,Shockley KR,Freedman JH

更新日期：2016-05-01 00:00:00

abstract：:Martineau et al. (2002) reported that St. Lawrence beluga (SLB) have high cancer rates. Unfortunately, errors in their interpretation of the data have led them to overstate the importance of cancer and its links to environmental sources. ...

journal_title：Environmental health perspectives

authors： Hammill MO,Lesage V,Kingsley MC

更新日期：2003-02-01 00:00:00

abstract：:As a result of the Leadership Conference on Biomedical Research and the Environment, the Facilities Committee focused its work on the development of best environmental practices at biomedical research facilities at the university and independent research facility level as well as consideration of potential involvement...

journal_title：Environmental health perspectives

authors： Medlin EL,Grupenhoff JT

更新日期：2000-12-01 00:00:00

abstract：BACKGROUND:In a changing climate, increasing temperatures are anticipated to have profound health impacts. These impacts could be mitigated if individuals and communities adapt to changing exposures; however, little is known about the extent to which the population may be adapting. OBJECTIVE:We investigated the hypoth...

journal_title：Environmental health perspectives

authors： Bobb JF,Peng RD,Bell ML,Dominici F

更新日期：2014-08-01 00:00:00

abstract：BACKGROUND:Many pesticides in current use have recently been revealed as in vitro androgen receptor (AR) antagonists, but information about their combined effects is lacking. OBJECTIVE:We investigated the combined effects and the competitive AR antagonism of pesticide mixtures. METHODS:We used the MDA-kb2 assay to te...

journal_title：Environmental health perspectives

authors： Orton F,Rosivatz E,Scholze M,Kortenkamp A

更新日期：2012-11-01 00:00:00

abstract：:Humans are exposed to a large number of environmental chemicals: Some of these may be toxic, and many others have unknown or poorly characterized health effects. There is intense interest in determining the impact of exposure to environmental chemical mixtures on human health. As the study of mixtures continues to evo...

journal_title：Environmental health perspectives

authors： Braun JM,Gennings C,Hauser R,Webster TF

更新日期：2016-01-01 00:00:00

abstract：:Previously, we found that exposure of neonatal rats to chlorpyrifos (CPF) produced brain cell damage and loss, with resultant abnormalities of synaptic development. We used the same biomarkers to examine prenatal CPF treatment so as to define the critical period of vulnerability. One group of pregnant rats received CP...

journal_title：Environmental health perspectives

authors： Qiao D,Seidler FJ,Padilla S,Slotkin TA

更新日期：2002-11-01 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：:Restriction-fragment-length polymorphism analysis was performed on several different types of human cancers, including carcinoma of the uterine cervix, neuroblastoma, hepatocellular carcinoma, pheochromocytoma, stomach cancer, and small-cell lung carcinoma (SCLC), to determine the chromosomal loci of putative tumor-su...

journal_title：Environmental health perspectives

authors： Yokota J,Sugimura T,Terada M

更新日期：1991-06-01 00:00:00

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

authors： McKeown M

更新日期：1980-06-01 00:00:00

abstract：:Toxicity testing in AS52 cells (24-hr exposures) gave LC50 values of 2 to 130 micrograms Ni/ml for particulate nickel compounds and 45 to 60 micrograms Ni/ml for water-soluble salts (NiCl2, NiSO4, Ni(CH3COO)2). The Ni(OH)2, NiCO3, and sulfides (Ni3S2, Ni7S6, "amorphous NiS") exhibited similar toxicities (LC50's of 2 t...

journal_title：Environmental health perspectives

authors： Fletcher GG,Rossetto FE,Turnbull JD,Nieboer E

更新日期：1994-09-01 00:00:00

abstract：BACKGROUND:Environmental heat exposure is a public health concern. The impacts of environmental heat on mortality and morbidity at the population scale are well documented, but little is known about specific exposures that individuals experience. OBJECTIVES:The first objective of this work was to catalyze discussion o...

journal_title：Environmental health perspectives

authors： Kuras ER,Richardson MB,Calkins MM,Ebi KL,Hess JJ,Kintziger KW,Jagger MA,Middel A,Scott AA,Spector JT,Uejio CK,Vanos JK,Zaitchik BF,Gohlke JM,Hondula DM

更新日期：2017-08-01 00:00:00

abstract：:It has been hypothesized that environmental exposure to synthetic estrogenic chemicals and related endocrine-active compounds may be responsible for a global decrease in sperm counts, decreased male reproductive capacity, and breast cancer in women. Results of recent studies show that there are large demographic varia...

journal_title：Environmental health perspectives

authors： Safe SH

更新日期：2000-06-01 00:00:00

abstract：BACKGROUND:Environmental air pollutants are inhaled as complex mixtures, but the long dominant focus of monitoring and research on individual pollutants has provided modest insight into pollutant interactions that may be important to health. Trends toward managing multiple pollutants to maximize aggregate health gains ...

journal_title：Environmental health perspectives

authors： Mauderly JL,Samet JM

更新日期：2009-01-01 00:00:00

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

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

abstract：:Studies have shown that female mosquitofish living downstream of a paper mill located on the Fenholloway River, Florida, have masculinized secondary sex characteristics, including altered anal fin development and reproductive behavior. Masculinization can be caused by exposure to androgens in the water or from an alte...

journal_title：Environmental health perspectives

authors： Orlando EF,Davis WP,Guillette LJ Jr

更新日期：2002-06-01 00:00:00

abstract：:Ambient monitoring of acid aerosols in four U.S. cities and in a rural region of southern Ontario clearly show distinct periods of strong acidity. Measurements made in Kingston, TN, and Steubenville, OH, resulted in 24-hr H+ ion concentrations exceeding 100 nmole/m3 more than 10 times during summer months. Periods of ...

journal_title：Environmental health perspectives

authors： Spengler JD,Keeler GJ,Koutrakis P,Ryan PB,Raizenne M,Franklin CA

更新日期：1989-02-01 00:00:00

abstract：:The types of reactive intermediates generated upon reduction of chromium(VI) by glutathione or hydrogen peroxide and the resulting DNA damage have been determined. In vitro, reaction of chromium(VI) with glutathione led to formation of two chromium(V) complexes and the glutathione thiyl radical. When chromium(VI) was ...

journal_title：Environmental health perspectives

authors： Aiyar J,Berkovits HJ,Floyd RA,Wetterhahn KE

更新日期：1991-05-01 00:00:00

abstract：:Whole blood oxygen equilibrium curves (O2 ECs), blood buffer lines, and several hematologic properties were determined for adult guinea pigs exposed to 700 ppm methyl isocyanate (MIC) for 15 min. MIC inhalation effected a significant reduction of blood O2 affinity; the half-saturation pressure (P50) at 38 degrees C in...

journal_title：Environmental health perspectives

authors： Maginniss LA,Szewczak JM,Troup CM

更新日期：1987-06-01 00:00:00

abstract：:In this study we investigated the potential impact of climate change in Portugal on heat-related mortality, air pollution-related health effects, and selected vectorborne diseases. The assessment used climate scenarios from two regional climate models for a range of future time periods. The annual heat-related death r...

journal_title：Environmental health perspectives

authors： Casimiro E,Calheiros J,Santos FD,Kovats S

更新日期：2006-12-01 00:00:00

abstract：:Relative advantages and disadvantages and important design criteria for various exposure methods are presented. Five types of exposures are discussed: whole-body chambers, head-only exposures, nose or mouth-only methods, lung-only exposures, and partial-lung exposures. Design considerations covered include: air cleani...

journal_title：Environmental health perspectives

authors： Phalen RF

更新日期：1976-08-01 00:00:00

abstract：:This review presents a brief overview of the health effects and exposures of two criteria pollutants--ozone and particulate matter--and two toxic air pollutants--benzene and formaldehyde. These pollutants were selected from the six criteria pollutants and from the 189 toxic air pollutants on the basis of their prevale...

journal_title：Environmental health perspectives

authors： Suh HH,Bahadori T,Vallarino J,Spengler JD

更新日期：2000-08-01 00:00:00

abstract：:In this paper we report DNA binding of butadiene monoepoxide, a first metabolite of 1,3-butadiene catalyzed by monooxygenases. We prepared alkylated purines as marker compounds for 32-P-postlabeling and electrochemical analysis and developed methods to measure the corresponding products. The traditional postlabeling a...

journal_title：Environmental health perspectives

authors： Koivisto P,Adler ID,Sorsa M,Peltonen K

更新日期：1996-05-01 00:00:00

abstract：:Recent data from deep uranium mines in Czechoslovakia indicated that mines are exposed to other mutagenic factors in addition to radon daughter products. Mycotoxins were identified as a possible source of mutagens in these mines. Mycotoxins were examined in 38 samples from mines and in throat swabs taken from 116 mine...

journal_title：Environmental health perspectives

authors： Srám RJ,Dobiás L,Rössner P,Veselá D,Veselý D,Rakusová R,Rericha V

更新日期：1993-10-01 00:00:00

abstract：:Dysmenorrhea is a common gynecologic disorder in women of reproductive age. Previous studies have found an association between current cigarette smoking and prevalence of dysmenorrhea. This study investigated the association between exposure to environmental tobacco smoke (ETS) and the occurrence of dysmenorrhea among...

journal_title：Environmental health perspectives

authors： Chen C,Cho SI,Damokosh AI,Chen D,Li G,Wang X,Xu X

更新日期：2000-11-01 00:00:00

abstract：:Airway mucus is a complex airway secretion whose primary function as part of the mucociliary transport mechanism is to to serve as renewable and transportable barrier against inhaled particulates and toxic agents. The rheologic properties necessary for this function are imparted by glycoproteins, or mucins. Some respi...

journal_title：Environmental health perspectives

authors： Samet JM,Cheng PW

更新日期：1994-06-01 00:00:00