Abstract:
:Copper (Cu) accumulating in a form bound to metallothionein (MT) in the liver of Long-Evans rats with a cinnamon-like coat color (LEC rats), an animal model of Wilson disease, was removed with ammonium tetrathiomolybdate (TTM), and the fate of the Cu complexed with TTM and mobilized from the liver was determined. TTM was injected intravenously as a single dose of 2, 10 or 50 mg TTM/kg body weight into LEC and Wistar (normal Cu metabolism) rats, and then the concentrations of Cu and molybdenum (Mo) in the bile and plasma were monitored with time after the injection. In Wistar rats, most of the Mo was excreted into the urine, only a small quantity being excreted into the bile, while Cu excreted into the urine decreased. However, in LEC rats, Cu and Mo were excreted into the bile and blood, and the bile is recognized for the first time as the major route of excretion. The Cu excreted into both the bile and plasma was accompanied by an equimolar amount of Mo. The relative ratio of the amounts of Cu excreted into the bile and plasma was 40/60 for the low and high dose groups, and 70/30 for the medium dose group. The systemic dispositions of the Cu mobilized from the liver and the Mo complexed with the Cu were also determined for the kidneys, spleen and brain together with their urinal excretion. Although Mo in the three organs and Cu in the kidneys and spleen were increased or showed a tendency to increase, Cu in the brain was not increased at all doses of TTM.
journal_name
Chem Biol Interactjournal_title
Chemico-biological interactionsauthors
Komatsu Y,Sadakata I,Ogra Y,Suzuki KTdoi
10.1016/s0009-2797(99)00159-3subject
Has Abstractpub_date
2000-02-01 00:00:00pages
217-31issue
3eissn
0009-2797issn
1872-7786pii
S0009279799001593journal_volume
124pub_type
杂志文章abstract::Cataract is the most frequent cause of blindness worldwide and is treated by surgical removal of the opaque lens to restore the light path to the retina. While cataract surgery is a safe procedure, some patients develop a complication of the surgery involving opacification and wrinkling of the posterior lens capsule. ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2017.01.017
更新日期:2017-10-01 00:00:00
abstract::At pH 7.35, N-(2-oxopropyl)-N-nitrosourea (OPNU) reacted with calf thymus DNA to yield O6-methylguanine, 7-methylguanine and 3-methyladenine. Kinetic measurements of the base catalyzed decomposition of OPNU and the extent of methylation of DNA by OPNU suggested that methylnitrosourea is not formed as an intermediate p...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(84)90118-2
更新日期:1984-02-01 00:00:00
abstract::The metabolic activation of benzo[a]pyrene (BP) was examined in six samples of human skin after topical application of the hydrocarbon to the skin in short-term organ culture. The results show that all of the samples were capable of metabolizing BP to water-soluble products and to ether-soluble products that included ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(83)90082-0
更新日期:1983-08-01 00:00:00
abstract::DL-2-Oxo-3-(2-mercaptoethyl)-5-phenylimidazolidine (OMPI) a sulfhydryl metabolite of levamisole, unlike the parent compound, is shown to interfere with the morphological and functional integrity of microtubules in cultured cells at high concentrations (1.6-10(-4) M). Lower concentrations do not affect the cell morphol...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(78)90041-8
更新日期:1978-10-01 00:00:00
abstract::The neuropathologic mechanisms after exposure to lethal doses of nerve agent are complex and involve multiple biochemical pathways. Effective treatment requires drugs that can simultaneously protect by reversible binding to the acetylcholinesterase (AChE) and blocking cascades of seizure related brain damage, inflamma...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2012.10.016
更新日期:2013-03-25 00:00:00
abstract::Our computer simulations of gamma glutamyl semialdehyde dehydrogenase (GGSALDH, pyrroline 5-carboxylate dehydrogenase, ALDH4) were initiated from the Thermus thermophilus crystal structures in an effort to understand the effects of a seemingly subtle mutation. In humans, a natural S352L mutation gives rise to type II ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2008.10.009
更新日期:2009-03-16 00:00:00
abstract::The AH receptor (AHR) mediates toxicity of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) as well as induction of three cytochrome P450 enzymes and certain Phase II enzymes. In laboratory animals, genetic variations in the AHR lead to substantial differences in sensitivity to biochemical and toxic effects of TCDD and rela...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/s0009-2797(02)00071-6
更新日期:2002-09-20 00:00:00
abstract::Repair synthesis has been followed in P388F cell DNA following treatment with N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) using 5-iodo-deoxyuridine (IUdR) and [3H] thymidine combination. A pattern of repair synthesis was obtained, similar in its timing to the initial and medial stages of single-strand break formation ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(76)90023-5
更新日期:1976-07-01 00:00:00
abstract::Covalent modification of NTE, a neuronal protein with serine esterase activity, by certain organophosphates (OP) initiates degeneration of long axons in the peripheral and central nervous system. Simple inhibition of NTE esterase activity does not initiate neuropathy; the latter requires aging of the OP bound to the c...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/s0009-2797(99)00065-4
更新日期:1999-05-14 00:00:00
abstract::Product yields have been determined after one-electron-induced reduction of CCl4 in aqueous solutions containing t-butanol and various concentrations of oxygen. It was shown that CCl3 radicals add oxygen to form CCl3O2 radicals, which eventually yield three chloride ions and CO2. A constant ratio of G(Cl-)/G(CO2) = 4 ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(83)90144-8
更新日期:1983-10-15 00:00:00
abstract::Iron and copper ions, in their unbound form, may lead to the generation of reactive oxygen species via Haber-Weiss and/or Fenton reactions. In addition, it has been shown that copper ions can irreversibly and non-specifically bind to thiol groups in proteins. This non-specific binding property has not been fully addre...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2010.06.013
更新日期:2010-10-06 00:00:00
abstract::Because of the inability to predict and quantify the risk of idiosyncratic adverse drug reactions (IADRs) and because reactive metabolites (RMs) as opposed to the parent molecules from which they are derived are thought to be responsible for the pathogenesis of some IADRs, procedures (RM trapping/covalent binding) are...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2010.09.003
更新日期:2011-06-30 00:00:00
abstract::The metabolism of radiolabelled benz(j)aceanthrylene (B(j)A) was studied by high performance liquid chromatography (HPLC) using suspensions of hepatocytes and liver microsomes from control- or Aroclor 1254 (PCB)-treated rats, or with human liver microsomes (five different donors) as activation systems. The major metab...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(98)00037-4
更新日期:1998-06-05 00:00:00
abstract::Herbal medicines are increasingly being utilized to treat a wide variety of disease processes. Evening primrose extract (EPE) is extracted from Oenothera biennis L., one species of evening primroses, which has been shown to have several pharmacological effects. However, anti-tumor activity in the extract of defatted s...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(03)00060-7
更新日期:2003-06-15 00:00:00
abstract::Aldo-keto reductase (AKR) 1C3 is a cytosolic enzyme that metabolizes steroids, prostaglandins, toxic aldehydes and drugs. Recently, some nonsynonymous single nucleotide polymorphisms of AKR1C3 have been suggested to impact steroid and drug metabolism. In this study, we examined the effects of C154Y and L159V variants ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2016.12.018
更新日期:2017-10-01 00:00:00
abstract::Acetylcholinesterase (AChE) is an enzyme which terminates the cholinergic neurotransmission, by hydrolyzing acetylcholine at the nerve and nerve-muscle junctions. The reversible inhibition of AChE was suggested as the pre-treatment option of the intoxications caused by nerve agents. Based on our derived 3D-QSAR model ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2019.06.027
更新日期:2019-08-25 00:00:00
abstract::Irinotecan is highly effective in the treatment of metastatic colorectal cancer as well as many other cancers. However, irinotecan is known to cause severe diarrhea, which pose significant problems in patients undergoing irinotecan based chemotherapy. Dietary and herbal components have shown promise in improving gastr...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2018.06.018
更新日期:2018-08-01 00:00:00
abstract::Balbisia peduncularis, also known as "Amancay", is a plant of the Ledocarpaceae family that can be found in the Atacama Desert in northern Chile. Infusions of the plant have long being used in traditional herbal medicine. Its chemical composition indicates the presence of flavonoids, which have antioxidant properties....
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2008.12.011
更新日期:2009-05-15 00:00:00
abstract::2-Nitropropane (2-NP) is a genotoxicant and hepatocarcinogen in rodents. Conversion to propane 2-nitronate (P2N), the anion of the tautomeric aci form of 2-NP, seems to be a pivotal part of the mechanism by which 2-NP causes its toxicity. We tested the hypothesis that the tautomeric equilibrium is influenced by enzyme...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(95)03671-7
更新日期:1996-01-05 00:00:00
abstract::Treatment of rats with the aminonucleoside of puromycin, which increases the incorporation of labelled phenylalanyl-tRNA into polypeptide chains in liver ribosome preparations studied in vitro, did not change the factor-dependent binding of fMet-tRNA f Met to ribosomes nor the peptidyl transferase function of the ribo...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(75)90010-1
更新日期:1975-11-01 00:00:00
abstract::Increased oxidative stress and impaired antioxidant defense mechanism are important factors in the pathogenesis and progression of diabetes mellitus and other oxidant-related diseases. The present study was undertaken to evaluate the possible protective effects of S-allyl cysteine (SAC) against oxidative stress in str...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2010.10.001
更新日期:2011-01-15 00:00:00
abstract::A variety of substances of diverse structure have been shown to affect the activity of protein kinase C. Many of the agents which affect protein kinase C activity also markedly shift the bilayer to hexagonal phase transition temperature of phosphatidylethanolamines. Although one of the more potent activators of protei...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(87)90044-5
更新日期:1987-01-01 00:00:00
abstract::The microsomal metabolism of pentachlorophenol (PCP) was investigated, with special attention to the conversion dependent covalent binding to protein and DNA. The two metabolites detected were tetrachloro-1,2- and tetrachloro-1,4-hydroquinone. Microsomes from isosafrole (ISF)-induced rats were by far the most effectiv...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(86)90013-x
更新日期:1986-10-15 00:00:00
abstract::The hydroquinone and catechol like metabolites, NCQ344 and NCQ436 respectively, of the antipsychotic remoxipride have recently been demonstrated to induce apoptosis in myeloperoxidase (MPO)-rich human bone marrow progenitor and HL-60 cells [S.M. McGuinness, R. Johansson, J. Lundstrom, D. Ross, Induction of apoptosis b...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(00)00188-5
更新日期:2000-08-15 00:00:00
abstract::A single intravenous injection of methylazoxymethanol (MAM) acetate in doses of either 20 or 35 mg/kg body weight to male Sprague-Dawley rats induced altered liver cell foci and later, liver neoplasms in a dose related manner. Sequential observations in the rats given 35 mg/kg and thereafter fed an iron-loading diet r...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(86)80083-7
更新日期:1986-04-01 00:00:00
abstract::This paper describes the powerful cytotoxic action exerted by strychnopentamine (SP), a dimeric indole alkaloid extracted from Strychnos usambarensis Gilg, on B16 melanoma cells and on non-cancer human fibroblasts cultured in vitro. SP strongly inhibits cell proliferation and induces cell death at a relatively low con...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(91)90025-3
更新日期:1991-01-01 00:00:00
abstract::Neutrophils from asymptomatic HIV-infected patients have an increased Nitroblue tetrazolium (NBT) reduction, that is an increased production of oxygen radicals. Plasma from these patients can activate normal neutrophils to an increased NBT-reduction and the neutrophil activating factor thus seems to be mainly plasma b...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/0009-2797(94)90034-5
更新日期:1994-06-01 00:00:00
abstract::Notwithstanding ongoing progress in anticancer therapeutics development, the persistent problem remains to selectively target tumors while sparing normal tissues. This is confounding largely because the differences between normal and tumor cells are often subtle and part of a gradient, where a gene product may be more...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/s0009-2797(97)00166-x
更新日期:1998-04-24 00:00:00
abstract::Plant-based systems continue to play an essential role in healthcare, and their use by different cultures has been extensively documented. Baccharis trimera, popularly known as carqueja, is a plant widely distributed in South America and has been traditionally used for treating several diseases particularly associated...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/j.cbi.2018.09.002
更新日期:2018-12-25 00:00:00
abstract::This paper reports on time-resolved microfluorimetric measurements on hematoporphyrin-derivative (HpD)-treated lymphocytes. HpD is at present widely used as a tumor-locating and photosensitizing drug. It is therefore of great importance to study the extent to which the HpD uptake process depends on cell functional and...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(84)90090-5
更新日期:1984-07-01 00:00:00