abstract：:To evaluate the effectiveness of mass screening for uterine cancer in Japan, we compared the changes in the age-adjusted rates of potential years of life lost (PYLL) due to uterine cancer between 1969 and 1972 to 1973 through 1977 between the high coverage-rate (intensively screened) areas and the comparable control a...

journal_title：Environmental health perspectives

authors： Kuroishi T,Hirose K,Tominaga S

更新日期：1990-07-01 00:00:00

abstract：:The N-oxidation of carcinogenic arylamines to form N-hydroxy arylamines has long been regarded as a necessary metabolic step for conversion to proximate carcinogenic derivatives. In contrast, arylamine ring-oxidation has been generally considered to be an important detoxification mechanism. Both enzymatic reactions ar...

journal_title：Environmental health perspectives

authors： Kadlubar FF,Fu PP,Jung H,Shaikh AU,Beland FA

更新日期：1990-07-01 00:00:00

abstract：:This paper concerns the testing for Hardy-Weinberg equilibrium and the estimation of gene frequency in the human leukocyte antigens (HLA) system. An extensive simulation study for both testing and estimation is given for investigating the performance of the projection method by Eguchi and Matsuura, which has a closed ...

journal_title：Environmental health perspectives

authors： Matsuura M,Eguchi S

更新日期：1990-07-01 00:00:00

abstract：:The formation of reactive oxygen species resulting from the interaction of silica dust particles with red blood cell membranes was investigated; particularly, the effect of surface hydroxyl (silanol) group concentration on the rate of formation of such reactive oxygen species was investigated. The rate of formation wa...

journal_title：Environmental health perspectives

authors： Razzaboni BL,Bolsaitis P

更新日期：1990-07-01 00:00:00

abstract：:Alveolar macrophages were treated with carbon blacks and adsorbates in order to evaluate the biologic effect of adsorbate, adsorbent and adsorbate-adsorbent complexes. Their capacity to phagocytize a subsequent challenge via the Fc-membrane receptor was quantified. Phagocytosis was suppressed in a dose-related manner ...

journal_title：Environmental health perspectives

authors： Jakab GJ,Risby TH,Sehnert SS,Hmieleski RR,Farrington JE

更新日期：1990-06-01 00:00:00

abstract：:Groundwater contamination is a serious problem that is growing in the United States, but its true extent is not known and it is difficult to determine because of the complexities of contaminants, their transformation, and fate in groundwater systems. It is also difficult to predict their movement in groundwater. Since...

journal_title：Environmental health perspectives

authors： Patrick R

更新日期：1990-06-01 00:00:00

abstract：:A cohort of 12,110 male workers employed 1 or more years in eight styrene-butadiene polymer (SBR) manufacturing plants in the United States and Canada has been followed for mortality over a 40-year period, 1943 to 1982. The all-cause mortality of these workers was low [standardized mortality ratio (SMR) = 0.81] compar...

journal_title：Environmental health perspectives

authors： Matanoski GM,Santos-Burgoa C,Schwartz L

更新日期：1990-06-01 00:00:00

abstract：:Surface IR (infrared) modes of crystalline and fumed (amorphous) silica particles, calcined at temperatures up to 1095 degrees C, have been studied by Fourier transform infrared spectroscopy. The ability of these same particles to lyse cells has been measured by a hemolysis protocol. The untreated crystalline and amor...

journal_title：Environmental health perspectives

authors： Pandurangi RS,Seehra MS,Razzaboni BL,Bolsaitis P

更新日期：1990-06-01 00:00:00

abstract：:Human health and aquatic animal health are organically related at three distinct interfaces. Aquatic animals serve as important contributors to the nutritional protein, lipid, and vitamin requirements of humans; as carriers and transmitters of many infectious and parasitic diseases to which humans are susceptible; and...

journal_title：Environmental health perspectives

authors： Dawe CJ

更新日期：1990-06-01 00:00:00

abstract：:Lipocortins are structurally related, glucocorticoid-inducible proteins that inhibit phospholipase A2 (PLA2), thereby reducing the liberation of arachidonic acid from phospholipids and so limiting the synthesis of eicosanoid inflammatory mediators. This study is the first demonstration of one lipocortin, lipocortin 1 ...

journal_title：Environmental health perspectives

authors： Smith SF,Tetley TD,Guz A,Flower RJ

更新日期：1990-04-01 00:00:00

abstract：:The development of inhalation toxicology as a distinct discipline can be traced back well over one hundred years. The technology has advanced in terms of materials and designs used to construct inhalation chambers and the equipment used to generate controlled test atmospheres of a wide variety of gases, vapors, dusts,...

journal_title：Environmental health perspectives

authors： Dorato MA

更新日期：1990-04-01 00:00:00

abstract：:The effects of inhaled zinc oxide/hexachloroethane smoke (11,580 mg x min/m3) and intratracheally instilled zinc chloride (2.5 mg/kg body weight) have been studied in rat lung. The effects of subsequent treatment with 70% oxygen have been studied after both procedures. Both the inhalation of the smoke and instillation...

journal_title：Environmental health perspectives

authors： Brown RF,Marrs TC,Rice P,Masek LC

更新日期：1990-04-01 00:00:00

abstract：:The mammalian respiratory tract is densely innervated by autonomic and sensory nerves around airways and blood vessels. Subsets of these nerves contain a number of putative neurotransmitter peptides, such as substance P and calcitonin gene-related peptide (CGRP) in sensory nerves and vasoactive intestinal polypeptide ...

journal_title：Environmental health perspectives

authors： Springall DR,Edginton JA,Price PN,Swanston DW,Noel C,Bloom SR,Polak JM

更新日期：1990-04-01 00:00:00

abstract：:The nasal cavity is susceptible to chemically induced injury as a result of exposure to inhaled irritants. Some responses of the nasal mucosa to inhaled toxicants are species specific. These species-related differences in response may be due to variations in structural, physiologic, and biochemical factors, such as gr...

journal_title：Environmental health perspectives

authors： Harkema JR

更新日期：1990-04-01 00:00:00

abstract：:All cells contain elaborate systems for the spatial and temporal regulation of the calcium ion, [Ca2+]i, and diverse Ca2+ receptor and biochemical response systems that are regulated by these changes in [Ca2+]i. Toxicants that perturb the mobilization or homeostasis of [Ca2+]i will place the regulation of these proces...

journal_title：Environmental health perspectives

authors： Pounds JG

更新日期：1990-03-01 00:00:00

abstract：:Calcium has been implicated as a regulatory factor in many physiological and pathophysiological processes in the renal cell. Under physiological conditions, the cytosolic free calcium concentration is maintained at approximately 100 nM. Most of the releasable cell Ca2+ resides in the nonmitochondrial compartments. In ...

journal_title：Environmental health perspectives

authors： Bonventre JV

更新日期：1990-03-01 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：:Groundwater pollution has become a worrisome phenomenon, mainly for aquifers underlying industrialized areas. In order to evaluate the risk of pollution, a model of the aquifer is needed. Herewith, we describe a quasi-tridimensional model, which we applied to a multilayered aquifer where a phreatic aquifer was coupled...

journal_title：Environmental health perspectives

authors： Ponzini G,Crosta G,Giudici M

更新日期：1989-11-01 00:00:00

abstract：:This paper examines recent risk assessments for benzene and observes a number of inconsistencies within the study and consistencies between studies that should effect the quantitative determination of the risk from benzene exposure. Comparisons across studies show that only acute myeloid leukemia (AML) is found to be ...

journal_title：Environmental health perspectives

authors： Lamm SH,Walters AS,Wilson R,Byrd DM,Grunwald H

更新日期：1989-07-01 00:00:00

abstract：:Studies conducted by the National Toxicology Program on the chronic toxicity of benzene indicated that B6C3F1 mice were more sensitive to the carcinogenic effects of benzene than were F344 rats. A physiological model was developed to describe the uptake and metabolism of benzene in rats and mice. Our objective was to ...

journal_title：Environmental health perspectives

authors： Medinsky MA,Sabourin PJ,Henderson RF,Lucier G,Birnbaum LS

更新日期：1989-07-01 00:00:00

abstract：:To assess quantitatively the association between benzene and leukemia, we evaluated the rate of mortality experienced by a cohort occupationally exposed to benzene. Using data from historical air sampling surveys, we estimated the daily benzene exposure for each member of the cohort. The expected number of leukemia de...

journal_title：Environmental health perspectives

authors： Rinsky RA

更新日期：1989-07-01 00:00:00

abstract：:The dose-response relationship of the benzene covalent interaction with biological macromolecules from rat organs was studied. The administered dose range was 3.6 x 10(7) starting from the highest dosage employed, 486 mg/kg, which is oncogenic for rodents, and included low and very low dosages. The present study was i...

journal_title：Environmental health perspectives

authors： Mazzullo M,Bartoli S,Bonora B,Colacci A,Grilli S,Lattanzi G,Niero A,Turina MP,Parodi S

更新日期：1989-07-01 00:00:00

abstract：:Using data from published studies, lung concentrations of nickel were compare for persons with and without occupational exposure to nickel. As expected, the concentrations were much higher for persons with occupational exposure. To estimate the effects of nickel-containing tobacco smoke and nickel in the ambient air o...

journal_title：Environmental health perspectives

authors： Edelman DA,Roggli VL

更新日期：1989-05-01 00:00:00

abstract：:Asbestos and other mineral fibers are carcinogenic to humans and animals but differ from many carcinogens in that they do not induce gene mutations. An understanding of these interesting human carcinogens, therefore, is an important problem in cancer research. Asbestos and other fibers induce predominantly two types o...

journal_title：Environmental health perspectives

authors： Barrett JC,Lamb PW,Wiseman RW

更新日期：1989-05-01 00:00:00

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

authors： Meyer RE,Aldrich TE,Easterly CE

更新日期：1989-05-01 00:00:00

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 methylati...

journal_title：Environmental health perspectives

authors： Michalowsky LA,Jones PA

更新日期：1989-03-01 00:00:00

abstract：:The central feature of hemopoiesis is life-long, stable cell renewal. This process is supported by hemopoietic stem cells which, in the steady state, appear to be dormant in cell cycling. The entry into cell cycle of the dormant stem cells may be promoted by such factors as interleukin-1, interleukin-6 (IL-6), and gra...

journal_title：Environmental health perspectives

authors： Ogawa M

更新日期：1989-03-01 00:00:00

abstract：:Embryonal carcinoma (EC) cells offer an interesting model system for evaluating differentiation because the cells are pluripotent, thus resembling germ cells and embryonic stem cells, and because a number of agents have been defined that are capable of promoting the differentiation of these cells. This chapter examine...

journal_title：Environmental health perspectives

authors： Astigiano S,Sherman MI,Abarzúa P

更新日期：1989-03-01 00:00:00

abstract：:There is concern about the human health effects of inhalation of acid compounds found in urban air pollution. It was the purpose of this study to investigate three of these acid compounds, sulfur dioxide (SO2), sulfuric acid (H2SO4), and nitric acid (HNO3) in a group of allergic adolescent subjects. Subjects were expo...

journal_title：Environmental health perspectives

authors： Koenig JQ,Covert DS,Pierson WE

更新日期：1989-02-01 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：:Effects of respirable aerosols of sulfuric acid, ammonium sulfate, sodium sulfite, and ammonium persulfate on lungs of rats are reviewed. The literature regarding interactions between ozone or nitrogen dioxide and acidic aerosols (ammonium sulfate, sulfuric acid) is discussed. An unexpected interaction between nitroge...

journal_title：Environmental health perspectives

authors： Last JA

更新日期：1989-02-01 00:00:00

abstract：:Studies performed earlier have shown a positive relation between blood lead (a parameter for lead body burden) and blood pressure, whereas such a relation between urine cadmium (a parameter for cadmium body burden) and blood pressure could not be shown. Median (i.e., 50th percentile, P50) blood levels in the general p...

journal_title：Environmental health perspectives

authors： de Kort WL,Zwennis WC

更新日期：1988-06-01 00:00:00

abstract：:The relationship between blood lead concentration and blood pressure is examined in a survey of 7371 men aged 40 to 59 from 24 British towns. After allowance for relevant confounding variables, including town of residence and alcohol consumption, there exists a very weak but statistically significant positive associat...

journal_title：Environmental health perspectives

authors： Pocock SJ,Shaper AG,Ashby D,Delves HT,Clayton BE

更新日期：1988-06-01 00:00:00

abstract：:The relationship between blood pressure and blood lead was examined in two population samples. One of these consisted of 1137 men aged 49 to 65 years, the other of 865 men and 856 women aged 18 to 64 years. Neither population had any known important exposure to lead, and the 95% ranges of blood lead levels were 6 to 2...

journal_title：Environmental health perspectives

authors： Elwood PC,Davey-Smith G,Oldham PD,Toothill C

更新日期：1988-06-01 00:00:00

abstract：:Inoculation of tumorigenic prostatic stroma and nontumorigenic prostatic epithelia into the subcutaneous space of syngeneic rats induced the development of carcinosarcoma. The induced tumors, which were composed of a mixture of adenocarcinoma and fibrosarcoma, were androgen responsive. This model offers a novel mechan...

journal_title：Environmental health perspectives

authors： Chung LW,Chang SM,Bell C,Zhau H,Ro JY,von Eschenbach AC

更新日期：1988-04-01 00:00:00

abstract：:The many anatomical, physiological, and biochemical differences among various mammalian species make it difficult to extrapolate carcinogenic potency data from animals to humans. The process is further complicated by the multistep origin of most malignant tumors in animals and humans due to the interaction of target c...

journal_title：Environmental health perspectives

authors： Slaga TJ

更新日期：1988-04-01 00:00:00

abstract：:The tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA) has highly pleiotropic effects on cells in culture and on tissues in vivo, including effects on protein kinase C (PKC) activation and gene expression. In order to determine the mechanism of activation of gene transcription by TPA, DNA sequences whose transc...

journal_title：Environmental health perspectives

authors： Johnson MD,Housey GM,O'Brian CA,Kirschmeier PT,Weinstein IB

更新日期：1987-12-01 00:00:00

abstract：:The carcinogenic activities of sodium chlorite in B6C3F1 mice were examined. Sodium chlorite was given at concentrations of 0 (control), 0.025% (low dose), or 0.05% (high dose) in the drinking water of 150 female and 150 male mice for 80 weeks, after which time the animals were returned to distilled water without sodi...

journal_title：Environmental health perspectives

authors： Yokose Y,Uchida K,Nakae D,Shiraiwa K,Yamamoto K,Konishi Y

更新日期：1987-12-01 00:00:00

abstract：:Some of the statistical properties of a simple two-stage model of carcinogenesis are explored. The implications of additive treatment effects versus independent treatment effects on the shape of the dose-response curve are considered. Response that is low-dose linear results in the cases where the mutation rates are a...

journal_title：Environmental health perspectives

authors： Portier CJ

更新日期：1987-12-01 00:00:00

abstract：:Proto-oncogenes are cellular genes that are expressed during normal growth and developmental processes. Altered versions of normal proto-oncogenes have been implicated in the development of human neoplasia. In this report, we show the detection of activated proto-oncogenes in various spontaneous and chemically induced...

journal_title：Environmental health perspectives

authors： Stowers SJ,Maronpot RR,Reynolds SH,Anderson MW

更新日期：1987-11-01 00:00:00