Abstract:
:To determine correlations between the biological action pattern and chemical reactivity of alkylating agents, the rate constants for reactions of 1,3-propane sultone and 1,4-butane sultone with a series of nucleophiles at 37 degrees C have been determined. Previously published data on the mutagenicity of the two sultones and of some alkyl methanesulfonates and dialkyl sulfates towards Schizosaccharomyces pombe have been used in the evaluation of the dependence of mutagenic effectiveness on chemical reactivity. It is of interest to note that the mutagenic effectiveness of the two sultones, if expressed per alkylating event at a certain low nucleophilicity is the same as that of e.g. methyl methanesulfonate and ethyl methanesulfonate.
journal_name
Chem Biol Interactjournal_title
Chemico-biological interactionsauthors
Osterman-Golkar S,Wachtmeister CAdoi
10.1016/0009-2797(76)90036-3subject
Has Abstractpub_date
1976-07-01 00:00:00pages
195-202issue
1-2eissn
0009-2797issn
1872-7786pii
0009-2797(76)90036-3journal_volume
14pub_type
杂志文章abstract::ALDH1L1 (cytosolic 10-formyltetrahydrofolate dehydrogenase) is the enzyme in folate metabolism commonly downregulated in human cancers. One of the mechanisms of the enzyme downregulation is methylation of the promoter of the ALDH1L1 gene. Recent studies underscored ALDH1L1 as a candidate tumor suppressor and potential...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/j.cbi.2019.02.013
更新日期:2019-04-01 00:00:00
abstract::Despite the great progress made in setting the basis for the molecular diversity of acetylcholinesterase (AChE), an explanation for the existence of two types of amphiphilic subunits, with and without glicosylphosphatidylinositol (GPI) (Types I and II), has not been provided yet. In searching whether, as for the defic...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2008.04.018
更新日期:2008-09-25 00:00:00
abstract::Acetylcholinesterase (AChE) inhibitors increase the availability of acetylcholine in central cholinergic synapses and are the most promising drugs currently available for the treatment of Alzheimer's disease (AD). Our screening study indicated that the water fraction of the methanolic extract of Lycopodiella cernua (L...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2015.07.008
更新日期:2015-10-05 00:00:00
abstract::Oxidative stress induced by Reactive Oxygen Species (ROS) was shown to be involved in the pathogenesis of chronic diseases such as cardiovascular pathologies. Particularly, oxidative stress has proved to mediate abnormal platelet function and dysfunctional endothelium-dependent vasodilatation representing a key factor...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/j.cbi.2017.11.012
更新日期:2018-01-05 00:00:00
abstract::The degradation in alkali of normal DNA and DNA alkylated with dimethyl sulphate (DMS), N-methyl-N-nitrosourea (MNUA) and N-ethyl-N-nitrosourea (ENUA) has been investigated using analytical ultracentrifugation techniques. For control T7-DNA (w.st. denatured form 12.5 - 10(6) daltons) the rate of degradation at 37 degr...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(76)90004-1
更新日期:1976-05-01 00:00:00
abstract::Pineal hormone melatonin is an important regulator of endocrine and circadian rhythms in vertebrates. Since liver is assumed to be the major organ in the metabolism of this indole hormone, we investigated the effect of the known Ah-receptor agonist, 2,3,7, 8-tetrachlorodibenzo-p-dioxin (TCDD) on melatonin metabolism i...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(00)00153-8
更新日期:2000-06-01 00:00:00
abstract::Recently, it has been shown that drimane-type sesquiterpenoids isolated from Zygogynum pancheri, a species native to New Caledonia, possessed significant α-amylase inhibitory activities. To further explore their antidiabetic potential, we investigated the effect of 1β-O-(E-cinnamoyl)-6α-hydroxy-9epi-polygodial (D) and...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2020.109167
更新日期:2020-10-01 00:00:00
abstract::Glycidyl ethers are used in epoxy resins. Epoxy resins are widely used in adhesives and coatings, as well as in electronics and structural composites, thus there is a potential of human exposure to glycidyl ethers. The aim of the present investigation was to explore the utility of haemoglobin adducts for biomonitoring...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(96)03744-1
更新日期:1997-01-24 00:00:00
abstract::The ochratoxin A (OTA) metabolite (4R)-4-hydroxyochratoxin A [4R)-OTA) inhibits the aminoacylation of phenylalanine tRNA catalyzed by phenylalanyl-tRNA synthetase (PheRS) with a Ki-value of 0.9 mM as compared to 1.3 mM for OTA. It also inhibits protein synthesis and cell growth in the same manner as OTA. Ochratoxin al...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(83)90160-6
更新日期:1983-11-01 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::Inhibition of CYP enzymes is thought to be the most common cause of drug-drug and/or herb-drug interactions. To characterize the inhibition of CYP enzymes activities by chemicals, enzyme inhibition kinetic experiments are usually carried out. The purpose of this letter is to call attention to evaluate the enzyme inhib...
journal_title:Chemico-biological interactions
pub_type: 评论,信件
doi:10.1016/j.cbi.2014.10.010
更新日期:2014-10-05 00:00:00
abstract::Risperidone has been used in some stress disorders and may be potentially protective against stress-induced gastric lesions. Thus, the aim of the present study is to investigate, whether risperidone, a D(2) receptor and 5-HT(2A) receptor antagonist, would be able to result in gastroprotective effect in stress-induced ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2011.02.002
更新日期:2011-04-25 00:00:00
abstract::Epigallocatechin-3-gallate (EGCG), a tea polyphenol, inhibits the proliferation of many cancer cell lines; however, the antiproliferative mechanism(s) are not well-characterized. The objective of this study is to identify the cellular signaling mechanism(s) responsible for the antiproliferative effects of EGCG in the ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2007.09.001
更新日期:2008-01-10 00:00:00
abstract::The five 5-nitroimidazole derivatives and the four glyoxylic compounds tested in this paper for their interaction with DNA with and without irradiation had previously been reported to act as radiosensitizers at a cellular level. Our aim was to find if the radiosensitizing activity of these products could be due to the...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(89)90038-0
更新日期:1989-01-01 00:00:00
abstract::6-Shogaol, a potent bioactive compound in ginger (Zingiber officinale Roscoe), has been reported for anti-inflammatory and anti-cancer activity. In this study, we investigated the effect of 6-shogaol to enhance tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-mediated apoptosis. The combined treatment w...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2015.01.020
更新日期:2015-02-25 00:00:00
abstract::A single dose of the carcinogen aflatoxin B1 (7 mg/kg body weight) to male Wistar rats significantly enhanced the hepatic activity of protein kinase C in the particulate and nuclear fractions. The particulate fraction showed stimulation at 4 and 7 h, while the nuclear activity was increased at 17 h following administr...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(96)03698-8
更新日期:1996-03-25 00:00:00
abstract::The metabolism of [3H]benzo[a]pyrene (BP) and (-)-trans-[14C]7,8-dihydroxy-7,8-dihydrobenzo[a]pyrene (BP-7,8-diol) was studied in freshly isolated hepatocytes of the wild benthic fish, brown bullhead (Ictalurus nebulosus). Bullhead hepatocytes incubated with 40 microM [3H]BP for 1 h metabolized BP to water soluble met...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(90)90063-s
更新日期:1990-01-01 00:00:00
abstract::It was aimed to identify the cytochrome(s) P450 (CYPs) involved in the N-demethylation and N-oxidation of clozapine (CLZ) by various approaches using human liver microsomes or microsomes from human B-lymphoblastoid cell lines. The maximum rates of formation were measured in the microsomal fraction of human livers and ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/s0009-2797(99)00006-x
更新日期:1999-04-01 00:00:00
abstract::Over the last few years, several laboratories have focused their attention on elucidating the molecular events that control the expression and localization of acetylcholinesterase (AChE) in neurons and skeletal muscle cells. In this context, results from a number of studies have clearly shown the important contributio...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2005.10.004
更新日期:2005-12-15 00:00:00
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journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(91)90083-j
更新日期:1991-01-01 00:00:00
abstract::Cholinesterases (ChEs) are classified as acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) according to their substrate specificity and sensitivity to selected inhibitors. The activities of AChE in red blood cells (RBC-AChE) and BChE in serum can be used as potential biomarkers of suppressed and/or heighten...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2005.10.031
更新日期:2005-12-15 00:00:00
abstract::Punarnavine, a quinolizidine alkaloid isolated from Boerhaavia diffusa is known to possess analgesic, anti-inflammatory, hepato-protective, immunomodulatory and anti-proliferative properties. However, its roles in tumor angiogenesis and the involved molecular mechanism are still unknown. Therefore, we examined its ant...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2013.09.007
更新日期:2013-11-25 00:00:00
abstract::The in vivo metabolite patterns of 2,5-difluoroaminobenzene and of its nitrobenzene analogue, 2,5-difluoronitrobenzene, were determined using 19F NMR analysis of urine samples. Results obtained demonstrate significant differences between the biotransformation patterns of these two analogues. For the aminobenzene, cyto...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(94)03317-2
更新日期:1995-01-01 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::Locoism threatens the sustainable development of animal husbandry in areas around the world with intensified desertification, especially in the western United States, western China, Canada, and Mexico, among other countries. This study was conducted to discover potential serum biomarkers in locoweed-poisoned rabbits a...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2017.02.022
更新日期:2017-04-25 00:00:00
abstract::We have studied the effect of muscular dystrophy by merosin deficiency on mouse thymus acetyl- (AChE) and butyrylcholinesterase (BuChE). The organ contains AChE and BuChE activities. Merosin deficiency causes an important decrease (46%) in AChE specific activity. Thymus produces dimers, monomers and tetramers of AChE,...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2005.10.092
更新日期:2005-12-15 00:00:00
abstract::The effects of pH on access to the cytochrome P-450 active site, N-demethylation and formation of the cytochrome P-450 Fe(II)-RNO metabolite complex for a series of erythromycin derivatives were examined. Studies were performed with dexamethasone-treated rat liver microsomes containing large amounts of cytochrome P-45...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(92)90063-q
更新日期:1992-12-01 00:00:00
abstract::Stearoyl-CoA desaturase (SCD) generates monounsaturated fatty acids (MUFAs) which contribute to cell growth, survival, differentiation, metabolic regulation and signal transduction. Overexpression of SCD is evident and implicated in metabolic diseases such as diabetes and non-alcoholic fatty liver disease. SCD also st...
journal_title:Chemico-biological interactions
pub_type: 杂志文章,评审
doi:10.1016/j.cbi.2019.108917
更新日期:2020-01-25 00:00:00
abstract::Thalidomide has anti-inflammatory, immunomodulatory, and anti-angiogenic properties. It has been used to treat a variety of cancers and autoimmune diseases. This study aimed to characterize anti-inflammatory activities of novel thalidomide analogs by exploring their effects on splenocytes proliferation and macrophage ...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/j.cbi.2015.05.017
更新日期:2015-08-05 00:00:00
abstract::Chrysotile asbestos permeabilizes the plasma membrane of rabbit polymorphonuclear leukocytes (PMNs) which is evident from the release of the cytoplasmic enzyme lactate dehydrogenase (LDH) from the cell. When Ca2+ is present in the medium exocytosis is observed, evident from the release of the granule associated enzyme...
journal_title:Chemico-biological interactions
pub_type: 杂志文章
doi:10.1016/0009-2797(89)90029-x
更新日期:1989-01-01 00:00:00