Chelation of cadmium.

Abstract:

:The toxicity of cadmium is determined by chelation reactions: in vivo, Cd2+ exists exclusively in coordination complexes with biological ligands, or with administered chelating agents. The Cd2+ ion has some soft character, but it is not a typical soft ion. It has a high degree of polarizability, and its complexes with soft ligands have predominantly covalent bond characteristics. Cd2+ forms the most stable complexes with soft donor atoms (S much greater than N greater than 0). The coordination stereochemistry of Cd2+ is unusually varied, including coordination numbers from 2 to 8. Even though the Cd2+ ion is a d10 ion, disturbed coordination geometries are often seen. Generally, the stability of complexes increases with the number of coordination groups contributed by the ligand; consequently, complexes of Cd2+ with polydentate ligands containing SH groups are very stable. Cd2+ in metallothionein (MT) is coordinated with 4 thiolate groups, and the log stability constant is estimated to 25.5. Complexes between Cd2+ and low molecular weight monodentate or bidentate ligands, e.g., free amino acids (LMW-Cd), seem to exist very briefly, and Cd2+ is rapidly bound to high molecular weight proteins, mainly serum albumin. These complexes (HMW-Cd) are rapidly scavenged from blood, mainly by the liver, and Cd2+ is redistributed to MT. After about 1 day the Cd-MT complex (MT-Cd) almost exclusively accounts for the total retained dose of Cd2+, independent of the route of exposure. MT-Cd is slowly transferred to and accumulated in kidney cortex. The acute toxicity and interorgan distribution of parenterally administered Cd2+ are strongly influenced by preceding MT induction, or decreased capacity for MT synthesis; however, the gastrointestinal (GI) uptake of Cd2+ seems unaffected by preceding MT induction resulting in considerable capacity for Cd2+ chelation in intestinal mucosa, and this finding indicates that endogenous MT is not involved in Cd2+ absorption. The toxicity of parenterally administered Cd2+ is strongly enhanced when administered as complexes with NTA or STPP , but it is much decreased when administered as a complex with EDTA. In chronic oral exposure the toxicity and GI uptake of Cd2+ is not changed when Cd2+ is administered as a complex with the detergent formula chelating agents NTA, EDTA and STPP . The uptake of Cd2+ from ligated intestine in vivo was not affected by administration of Cd2+ as complexes with CYS or GSH, but significantly reduced by complexation with EDTA or BAL. The acute toxicity of orally administered Cd2+ is reduced when Cd2+ is administered as a complex with EDTA.(ABSTRACT TRUNCATED AT 400 WORDS)

authors

Andersen O

doi

10.1289/ehp.8454249

subject

Has Abstract

pub_date

1984-03-01 00:00:00

pages

249-66

eissn

0091-6765

issn

1552-9924

journal_volume

54

pub_type

杂志文章
  • The fate of trenbolone acetate and melengestrol acetate after application as growth promoters in cattle: environmental studies.

    abstract::The steroids trenbolone acetate (TbA) and melengestrol acetate (MGA) are licensed as growth promoters for farm animals in several meat-exporting countries. Although many studies have explored their safety for both animals and consumers, little is known about their fate after excretion by the animal. Our study aimed to...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.011091145

    authors: Schiffer B,Daxenberger A,Meyer K,Meyer HH

    更新日期:2001-11-01 00:00:00

  • Role of proto-oncogene activation in carcinogenesis.

    abstract::The accumulation of genetic damage in the forms of activated proto-oncogenes and inactivated tumor-suppressor genes is the driving force in the evolution of a normal cell to a malignant cell. For example, both the activation of ras oncogenes and the inactivation of several suppressor genes, including p53, have been ob...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.929813

    authors: Anderson MW,Reynolds SH,You M,Maronpot RM

    更新日期:1992-11-01 00:00:00

  • The potential of exposure biomarkers in epidemiologic studies of reproductive health.

    abstract::To further the development and application of exposure markers in field investigations in reproductive epidemiology, we have synthesized recent examinations of the issues surrounding exposure measurements in reproductive epidemiology. The specific goals of this paper are to define exposure biomarkers and explore their...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.90-1519493

    authors: Hogue CJ,Brewster MA

    更新日期:1991-01-01 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

  • Plasma organochlorines and subsequent risk of prostate cancer in Japanese men: a nested case-control study.

    abstract:BACKGROUND:Although accumulating evidence suggests that exposure to organochlorine pesticides and polychlorinated biphenyls (PCBs) may contribute to the development of prostate cancer, few investigations have used biological samples to classify exposure to specific organochlorines. To our knowledge, this is the first p...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.0901214

    authors: Sawada N,Iwasaki M,Inoue M,Itoh H,Sasazuki S,Yamaji T,Shimazu T,Tsugane S,Japan Public Health Center Based Prospective (JPHC) Study Group.

    更新日期:2010-05-01 00:00:00

  • An extensive new literature concerning low-dose effects of bisphenol A shows the need for a new risk assessment.

    abstract::Bisphenol A (BPA) is the monomer used to manufacture polycarbonate plastic, the resin lining of cans, and other products, with global capacity in excess of 6.4 billion lb/year. Because the ester bonds in these BPA-based polymers are subject to hydrolysis, leaching of BPA has led to widespread human exposure. A recent ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.7713

    authors: vom Saal FS,Hughes C

    更新日期:2005-08-01 00:00:00

  • Airborne particles of the california central valley alter the lungs of healthy adult rats.

    abstract::Epidemiologic studies have shown that airborne particulate matter (PM) with a mass median aerodynamic diameter < 10 microm (PM10) is associated with an increase in respiratory-related disease. However, there is a growing consensus that particles < 2.5 microm (PM2.5), including many in the ultrafine (< 0.1 microm) size...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.5964

    authors: Smith KR,Kim S,Recendez JJ,Teague SV,Ménache MG,Grubbs DE,Sioutas C,Pinkerton KE

    更新日期:2003-06-01 00:00:00

  • Effects of Inorganic Arsenic, Methylated Arsenicals, and Arsenobetaine on Atherosclerosis in the Mouse Model and the Role of As3mt-Mediated Methylation.

    abstract:BACKGROUND:Arsenic is metabolized through a series of oxidative methylation reactions by arsenic (3) methyltransferase (As3MT) to yield methylated intermediates. Although arsenic exposure is known to increase the risk of atherosclerosis, the contribution of arsenic methylation and As3MT remains undefined. OBJECTIVES:O...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/EHP806

    authors: Negro Silva LF,Lemaire M,Lemarié CA,Plourde D,Bolt AM,Chiavatti C,Bohle DS,Slavkovich V,Graziano JH,Lehoux S,Mann KK

    更新日期:2017-07-05 00:00:00

  • Occupational cancer in Spain.

    abstract::The knowledge of specific problems of occupational cancer in Spain is scarce. The environment of the workplace has improved over the last few years after a long period distinguished by bad working conditions, incomplete legislation, and insufficient safety measures and control. It has been estimated that 3,083,479 wor...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.107-1566267

    authors: González CA,Agudo A

    更新日期:1999-05-01 00:00:00

  • The U.S. EPA Conference on Preventable Causes of Cancer in Children: a research agenda.

    abstract::On 15-16 September 1997, the U.S. Environmental Protection Agency sponsored the Conference on Preventable Causes of Cancer in Children. The conference was convened to examine rising trends in reported incidence of childhood cancer and the association of these trends with environmental exposures. This paper summarizes ...

    journal_title:Environmental health perspectives

    pub_type:

    doi:10.1289/ehp.98106867

    authors: Carroquino MJ,Galson SK,Licht J,Amler RW,Perera FP,Claxton LD,Landrigan PJ

    更新日期:1998-06-01 00:00:00

  • Summary of papers and research recommendations of Working Group on Tropospheric Ozone, Health Effects Institute environmental epidemiology planning project.

    abstract::This paper summarizes the themes and recommendations that emerge from the papers presented by the Working Group on Tropospheric Ozone. In terms of current knowledge, the following are considered of particular importance: a) lack of clear evidence for a human analogue of the terminal bronchiolar and proximal acinar cha...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.93101s4237

    authors: Tager IB

    更新日期:1993-12-01 00:00:00

  • A Combined Morphometric and Statistical Approach to Assess Nonmonotonicity in the Developing Mammary Gland of Rats in the CLARITY-BPA Study.

    abstract:BACKGROUND:The Consortium Linking Academic and Regulatory Insights on Bisphenol-A (CLARITY-BPA) is a rare collaboration of guideline-compliant (core) studies and academic hypothesis-based studies to assess the effects of bisphenol A (BPA). OBJECTIVES:We aimed to a) determine whether BPA showed effects on the developin...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/EHP6301

    authors: Montévil M,Acevedo N,Schaeberle CM,Bharadwaj M,Fenton SE,Soto AM

    更新日期:2020-05-01 00:00:00

  • Prenatal polybrominated diphenyl ether exposures and neurodevelopment in U.S. children through 5 years of age: the HOME study.

    abstract:BACKGROUND:Polybrominated diphenyl ethers (PBDEs) are persistent chemicals that have been widely used as flame retardants in furniture, carpet padding, car seats, and other consumer products during the past three decades. OBJECTIVE:We examined whether in utero exposure to PBDEs is associated with child cognitive funct...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1307562

    authors: Chen A,Yolton K,Rauch SA,Webster GM,Hornung R,Sjödin A,Dietrich KN,Lanphear BP

    更新日期:2014-08-01 00:00:00

  • Disruption of thyroid hormone receptor-mediated transcription and thyroid hormone-induced Purkinje cell dendrite arborization by polybrominated diphenyl ethers.

    abstract:BACKGROUND:Polybrominated diphenyl ethers (PBDEs) have been used as flame retardants and are becoming a ubiquitous environmental contaminant. Adverse effects in the developing brain are of great health concern. OBJECTIVE:We investigated the effect of PBDEs/hydroxylated PBDEs (OH-PBDEs) on thyroid hormone (TH) receptor...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1002065

    authors: Ibhazehiebo K,Iwasaki T,Kimura-Kuroda J,Miyazaki W,Shimokawa N,Koibuchi N

    更新日期:2011-02-01 00:00:00

  • Asthma symptoms in Hispanic children and daily ambient exposures to toxic and criteria air pollutants.

    abstract::Although acute adverse effects on asthma have been frequently found for the U.S. Environmental Protection Agency's principal criteria air pollutants, there is little epidemiologic information on specific hydrocarbons from toxic emission sources. We conducted a panel study of 22 Hispanic children with asthma who were 1...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.5992

    authors: Delfino RJ,Gong H Jr,Linn WS,Pellizzari ED,Hu Y

    更新日期:2003-04-01 00:00:00

  • Climate change, crop yields, and undernutrition: development of a model to quantify the impact of climate scenarios on child undernutrition.

    abstract:BACKGROUND:Global climate change is anticipated to reduce future cereal yields and threaten food security, thus potentially increasing the risk of undernutrition. The causation of undernutrition is complex, and there is a need to develop models that better quantify the potential impacts of climate change on population ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.1003311

    authors: Lloyd SJ,Kovats RS,Chalabi Z

    更新日期:2011-12-01 00:00:00

  • Biostatistical analysis of the micronucleus mutagenicity assay based on the assumption of a mixing distribution.

    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

    pub_type: 杂志文章

    doi:10.1289/ehp.94102s1121

    authors: Hothorn L

    更新日期:1994-01-01 00:00:00

  • Some reactions and properties of nitro radical-anions important in biology and medicine.

    abstract::Nitroaromatic compounds, ArNO2 have widespread actual or potential use in medicine and cancer therapy. There is direct proof that free-radical metabolites are involved in many applications, and an appreciation of the conceptual basis for their therapeutic differential; however, an understanding of the detailed mechani...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.8564309

    authors: Wardman P

    更新日期:1985-12-01 00:00:00

  • Associations between arsenic in drinking water and pterygium in southwestern Taiwan.

    abstract:BACKGROUND:Pterygium is a fibrovascular growth of the bulbar conjunctiva and underlying subconjunctival tissue that may cause blindness. The mechanism of pterygium formation is not yet fully understood, but pterygium has some tumorlike features. OBJECTIVES:The objective of this study was to evaluate the association be...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.11111

    authors: Lin W,Wang SL,Wu HJ,Chang KH,Yeh P,Chen CJ,Guo HR

    更新日期:2008-07-01 00:00:00

  • Fetal lead exposure at each stage of pregnancy as a predictor of infant mental development.

    abstract:BACKGROUND:The impact of prenatal lead exposure on neurodevelopment remains unclear in terms of consistency, the trimester of greatest vulnerability, and the best method for estimating fetal lead exposure. OBJECTIVE:We studied prenatal lead exposure's impact on neurodevelopment using repeated measures of fetal dose as...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.9067

    authors: Hu H,Téllez-Rojo MM,Bellinger D,Smith D,Ettinger AS,Lamadrid-Figueroa H,Schwartz J,Schnaas L,Mercado-García A,Hernández-Avila M

    更新日期:2006-11-01 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

  • Alveolar macrophage kinetics after inhalation of 239PuO2 by CBA/Ca mice: changes in synthesis of DNA.

    abstract::For workers in the nuclear industry, the primary route for the entry of radioactive materials into the body is by inhalation, and the rate of clearance of particles from the pulmonary region of the lung is an important factor in determining radiation dose. It is the function of alveolar macrophages (AM) to maintain th...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.929769

    authors: Kellington JP,Gibson K,Buckle TM,Talbot RJ,Hornby SB

    更新日期:1992-07-01 00:00:00

  • Exocrine pancreatic pathology in female Harlan Sprague-Dawley rats after chronic treatment with 2,3,7,8-tetrachlorodibenzo-p-dioxin and dioxin-like compounds.

    abstract::We evaluated the effect of chronic exposure to dioxin and dioxin-like compounds on the pancreas in female Harlan Sprague-Dawley rats. This investigation represents part of an ongoing National Toxicology Program initiative to determine the relative potency of chronic toxicity and carcinogenicity of polychlorinated diox...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.6869

    authors: Nyska A,Jokinen MP,Brix AE,Sells DM,Wyde ME,Orzech D,Haseman JK,Flake G,Walker NJ

    更新日期:2004-06-01 00:00:00

  • Predictors of plasma concentrations of DDE and PCBs in a group of U.S. women.

    abstract::We evaluated predictors of plasma concentrations of dichlorodiphenyldichloroethylene (DDE), a metabolite of dichlorodiphenyltrichloroethane (DDT), and polychlorinated biphenyls (PCBs) in a group of 240 women, controls from a breast cancer case-control study nested in the Nurses' Health Study. We considered personal at...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.9910775

    authors: Laden F,Neas LM,Spiegelman D,Hankinson SE,Willett WC,Ireland K,Wolff MS,Hunter DJ

    更新日期:1999-01-01 00:00:00

  • The role of plants and plant/microbial systems in the reduction of exposure.

    abstract::The activities of plants and plant/microbial associations may offer a viable means of accomplishing the in situ remediation of contaminated soils. Two uses of plants for phytoremediation are reported here. In one set of studies, the ability of plants to foster degradative microorganisms was investigated. Results indic...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.95103s413

    authors: Shann JR

    更新日期:1995-06-01 00:00:00

  • Free-radical-mediated DNA binding.

    abstract::Free-radical metabolites can be generated metabolically by a one-electron reductase-catalyzed reaction or a "peroxidase" catalyzed oxidation or by photoactivation of a wide variety of aromatic xenobiotics. Radicals may also be generated during lipid peroxidation. Some radicals can react with DNA or bind covalently or ...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.8564219

    authors: O'Brien PJ

    更新日期:1985-12-01 00:00:00

  • The conceptual structure of the integrated exposure uptake biokinetic model for lead in children.

    abstract::The integrated exposure uptake biokinetic model for lead in children was developed to provide plausible blood lead distributions corresponding to particular combinations of multimedia lead exposure. The model is based on a set of equations that convert lead exposure (expressed as micrograms per day) to blood lead conc...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章,评审

    doi:10.1289/ehp.98106s61513

    authors: White PD,Van Leeuwen P,Davis BD,Maddaloni M,Hogan KA,Marcus AH,Elias RW

    更新日期:1998-12-01 00:00:00

  • Mapping health in the Great Lakes areas of concern: a user-friendly tool for policy and decision makers.

    abstract::The role of the physical environment as a determinant of health is a major concern reported by the general public as well as by many policymakers. However, it remains one of the health determinants for which few available measures or indicators are readily available. This lack of data is compounded by the fact that ev...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.01109s6817

    authors: Elliott SJ,Eyles J,DeLuca P

    更新日期:2001-12-01 00:00:00

  • Municipal solid wastes and their disposal.

    abstract::A brief overview is given of the sources, characteristics, and toxic constituents of municipal solid wastes. Several methods are presented for handling, treating, and disposal of solid wastes. Monitoring the landfill site is necessary; there has been a trend to recognize that municipal solid wastes may be hazardous an...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.7827239

    authors: Stone R

    更新日期:1978-12-01 00:00:00

  • Structure-activity relationships for ulcerogenic and adrenocorticolytic effects of alkyl nitriles, amines, and thiols.

    abstract::In rats, a single administration of acrylonitrile (vinyl cyanide) produces a rapidly occurring bilateral adrenal apoplexy. Structure-activity studies have shown that a close derivative, propionitrile (ethyl cyanide), causes duodenal ulcer without markedly affecting the adrenal glands. Prolonging the two-carbon chain o...

    journal_title:Environmental health perspectives

    pub_type: 杂志文章

    doi:10.1289/ehp.7511135

    authors: Szabo S,Reynolds ES

    更新日期:1975-06-01 00:00:00