Abstract：
:The reduction of 20 microM hexavalent chromium [chromium(VI)] by L-ascorbic acid (AsA) (0.06-2 mM) and/or glutathione (GSH) (2-15 mM) in buffer solutions, cell-free bronchoalveolar lavage fluids or soluble fractions of rat lungs was investigated at physiological pH (37 degrees C). The reduction in AsA solution was pseudo-first-order in a single phase with respect to chromium(VI), but that in GSH solution showed a two-phase process. The half-life of chromium(IV) ranged from seconds to hours. The reducing ability of AsA was markedly higher than that of GSH. Coexistence of equimolar GSH with AsA accelerated the reduction rate slightly, in comparison with that in the corresponding AsA solution. Lavage fluids containing 0.06 mM AsA showed pH-dependent reactions similar to those of the corresponding AsA solutions. The lung-soluble fractions reduced chromium(VI) in a process composed of phase I and phase II, characterized by the reducing ability of AsA-GSH cooperation and of AsA alone, respectively. Reduction in the former was 30-40% more rapid than in the latter. The biological half-life of chromium(VI) in the lung was estimated to be 0.6 min, on the basis of the reducing activity in the first phase. However, the apparent biological half-life of chromium(VI) was about 2 min in rat lungs after intratracheal injection of chromate, involving depletion of AsA, but no significant changes in GSH. The difference is discussed in terms of AsA-induced initiative reduction in the alveolar lining fluid and subsequent obstructive effects of the resulting trivalent species on trans-membrane permeability of chromate anions.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Arch Toxicoljournal_title
Archives of toxicologyauthors
Suzuki Y,Fukuda Kdoi
10.1007/BF02010721subject
Has Abstractpub_date
1990-01-01 00:00:00pages
169-76issue
3eissn
0340-5761issn
1432-0738journal_volume
64pub_type
杂志文章abstract：:The goal of the present study was to obtain an in vivo relevant prioritization method for the endocrine potencies of different polycarbonate monomers, by combining in vitro bioassay data with physiologically based kinetic (PBK) modelling. PBK models were developed for a selection of monomers, including bisphenol A (BP...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-019-02479-6
更新日期：2019-07-01 00:00:00
abstract：:Cyclic AMP (c-AMP), added on its own to rat hepatocyte cultures, caused a marked accumulation of coproporphyrin III. The results obtained by comparing the effect of c-AMP to that of exogenous 5-aminolevulinate (ALA), and from adding c-AMP and ALA together, indicated that the coproporphyrinogen III metabolism was block...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-004-0637-1
更新日期：2005-07-01 00:00:00
abstract：:Free radical processes are proposed to play a crucial role in the development of procainamide adverse effects. Therefore, selenium, as a potent antioxidant, may modified procainamide toxicity. To test this hypothesis plasma and liver thiobarbituric acid-reacting substances (TBARS), plasma antioxidant activity (AOA), e...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF01973693
更新日期：1993-01-01 00:00:00
abstract：:Aciclovir (synonym: acyclovir) causes abnormal thymus development in rats. After treatment on day 10 of gestation a weight reduction of the organ is obvious in 21-day-old fetuses which persists postnatally. Adult male rats exposed in utero to one or three injections of 100 mg aciclovir/kg body wt given to the dam on d...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF01973385
更新日期：1992-01-01 00:00:00
abstract：:Aspergillus versicolor and A. flavus are primary colonizers in damp dwellings, and they produce sterigmatocystin (ST) and aflatoxin B1 (AFB(1)), respectively. These hepatotoxic and carcinogenic mycotoxins and their precursors and derivates possess a furofuran ring, which has proven responsible for their toxicity. The ...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-012-0871-x
更新日期：2012-10-01 00:00:00
abstract：:Epoxide hydrolases (EH) are ubiquitously expressed in all living organisms and in almost all organs and tissues. They are mainly subdivided into microsomal and soluble EH and catalyze the hydration of epoxides, three-membered-cyclic ethers, to their corresponding dihydrodiols. Owning to the high chemical reactivity of...
journal_title：Archives of toxicology
pub_type： 杂志文章,评审
doi：10.1007/s00204-014-1371-y
更新日期：2014-11-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF01968966
更新日期：1991-01-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章,评审
doi：10.1007/BF02284256
更新日期：1991-01-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00296955
更新日期：1987-01-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050298
更新日期：1996-01-01 00:00:00
abstract：:Previous studies in our laboratory identified retinoid-induced defects that are mediated by RAR-RXR heterodimerization using interaction of synthetic ligands selective for the retinoid receptors RAR and RXR in mice (Elmazar et al. 1997, Toxicol Appl Pharmacol 146:21-28; Elmazar et al. 2001, Toxicol Appl Pharmacol 170:...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-004-0586-8
更新日期：2004-11-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章,评审
doi：10.1007/s00204-013-1160-z
更新日期：2014-03-01 00:00:00
abstract：:Milacemide (2-n-pentylaminoacetamide) hydrochloride was administered by continuous i.v. infusion for up to 7 days, at 300 and 600 mg/kg per day to male Sprague-Dawley rats. This was intended to provide high and sustained exposure to evaluate the effect of a preterminal 24-h fast on liver lipid content. Liver lipid con...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050067
更新日期：1994-01-01 00:00:00
abstract：:Treatment of tuberculosis (TB) has been a therapeutic challenge because of not only the naturally high resistance level of Mycobacterium tuberculosis to antibiotics but also the newly acquired mutations that confer further resistance. Currently standardized regimens require patients to daily ingest up to four drugs un...
journal_title：Archives of toxicology
pub_type： 杂志文章,评审
doi：10.1007/s00204-016-1727-6
更新日期：2016-07-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00661377
更新日期：1987-12-01 00:00:00
abstract：:In order to clarify the possible mechanism of hepatocarcinogenesis induced by piperonyl butoxide, we attempted to identify the transcription factor activated by piperonyl butoxide in the male ICR mouse liver. Administration of 0.6% piperonyl butoxide for 24 h elevated the level of liver nuclear proteins that bind to a...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-008-0283-0
更新日期：2008-10-01 00:00:00
abstract：:Cholestasis underlies one of the major manifestations of drug-induced liver injury. Drug-induced cholestatic liver toxicity is a complex process, as it can be triggered by a variety of factors that induce 2 types of biological responses, namely a deteriorative response, caused by bile acid accumulation, and an adaptiv...
journal_title：Archives of toxicology
pub_type： 杂志文章,评审
doi：10.1007/s00204-019-02437-2
更新日期：2019-05-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050146
更新日期：1994-01-01 00:00:00
abstract：:This discussion of the NEL presents some thoughts how toxicologists could be encouraged to use more sophisticated modern techniques for the study of various environmental chemicals. It is proposed to use the concept of the NEL only for data obtained by conventional techniques in routine toxicity experiments. Informati...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00695868
更新日期：1979-10-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050001
更新日期：2000-01-01 00:00:00
abstract：:Bolesatine, a glycoprotein from Boletus satanas Lenz, has previously been shown to be mitogenic to rat and human lymphocytes at very low concentrations, whereas higher concentrations inhibit protein synthesis in vitro and in several in vivo systems. The mechanism whereby this mitogenic activity occurs was previously u...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050223
更新日期：1995-01-01 00:00:00
abstract：:Cyclin-dependent kinases (CDKs) are a family of kinases associated predominantly with cell cycle control, making CDK inhibitors interesting candidates for anti-cancer therapeutics. However, retinal toxicity (loss of photoreceptors) has been associated with CDK inhibitors, including the pan-CDK inhibitor AG-012896. The...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-018-2376-8
更新日期：2019-03-01 00:00:00
abstract：:The involvement of oxidative stress has been suggested as a mechanism for neurotoxicity caused by methylmercury (MeHg), but the mechanism for MeHg selective toxicity in the central nervous system is still unclear. In this research, to clarify the mechanism of selective neurotoxicity caused by MeHg, the oxygen consumpt...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-007-0209-2
更新日期：2007-11-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-003-0457-8
更新日期：2003-07-01 00:00:00
abstract：:Microsomal and soluble epoxide hydrolase (mEH and sEH) fulfill apparently distinct roles: Whereas mEH detoxifies xenobiotics, sEH hydrolyzes fatty acid (FA) signaling molecules and is thus implicated in a variety of physiological functions. These epoxy FAs comprise epoxyeicosatrienoic acids (EETs) and epoxy-octadeceno...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-017-2060-4
更新日期：2017-11-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050613
更新日期：1999-06-01 00:00:00
abstract：:Perfluorooctanoic acid (PFOA) has been shown to cause hepatotoxicity and other toxicological effects. Though PPARα activation by PFOA in the liver has been well accepted as an important mechanism of PFOA-induced hepatotoxicity, several pieces of evidence have shown that the hepatotoxic effects of PFOA may not be fully...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-016-1675-1
更新日期：2017-01-01 00:00:00
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journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00316211
更新日期：1987-04-01 00:00:00
abstract：:HCB was detected in all preparations of human placenta, maternal blood, milk, and cord blood. It was confirmed that HCB transferred from mother to fetus through the placenta. A significant linear correlation exists between the HCB concentration in placenta and that in cord blood. Therefore, the placental concentration...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00333426
更新日期：1985-01-01 00:00:00
abstract：:Perfluoroalkyl acids are widely used in numerous industrial and commercial applications due to their unique physical and chemical characteristics. Although perfluorooctanoic acid (PFOA) is associated with hepatomegaly through peroxisome proliferator-activated receptor α (PPARα) activation, liver fat accumulation and c...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-014-1322-7
更新日期：2015-09-01 00:00:00
