Abstract：
:In comparison with the fluorescence emission spectra of 7-methylbenz[a]-anthracene-nucleoside adducts, the fluorescence emission spectra of hydrocarbon-deoxyribonucleoside adducts containing a methyl substituent in the "bay region" lack spectral resolution at room temperature and appear at substantially longer wavelength. This spectral resolution is improved when spectra are measured at 77 K and an irreversible spectral shift to shorter wavelength, accompanied by improved resolution, results from mild acid hydrolysis. These spectral properties peculiar to the "bay region-substituted" adducts presumably result from an intramolecular interaction between the hydrocarbon fluorophore and the attached nucleoside brought about, in the examples studied here, by the presence of the 12-methyl group in 7,12-dimethylbenz[awanthracene (DMBA) and in 7-hydroxymethyl-12-methylbenz[a]anthracene. This interaction suggests that the site of nucleoside attachment is in close proximity to the 12-methyl group and that binding occurs, therefore, through the intermediacy of a 3,4-diol-1,2-oxide, i.e. a "bay region" diol-epoxide in each case.
journal_name
Chem Biol Interactjournal_title
Chemico-biological interactionsauthors
Moschel RC,Hudgins WR,Dipple Adoi
10.1016/0009-2797(79)90150-9subject
Has Abstractpub_date
1979-09-01 00:00:00pages
69-79issue
1eissn
0009-2797issn
1872-7786pii
0009-2797(79)90150-9journal_volume
27pub_type
杂志文章abstract：:Two aldehyde dehydrogenases (ALDH) were purified from the liver of black seabream (Acanthopagrus schlegeli). Chromatography of the liver homogenate on an alpha-cyanocinnamate-Sepharose affinity column results in two activity peaks using acetaldehyde as the substrate. The eluate was subjected to another affinity chroma...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(02)00200-4
更新日期：2003-02-01 00:00:00
abstract：:The current experimental work deals with the immunomodulatory studies on the extract of Withania somnifera (L.) Dunal root powder against benzo(a)pyrene induced lung cancer in male Swiss albino mice. In our previous study, we reported the antioxidant and anticarcinogenic effect of W. somnifera (L.) Dunal along with pa...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2005.11.003
更新日期：2006-02-25 00:00:00
abstract：:The lethal effects of linoleic acid and its hydroperoxide on human diploid fibroblasts were quite similar, and that of the reaction mixture from the autoxidation of the hydroperoxide was considerable. Some unsaturated aliphatic aldehydes, the secondary products of the hydroperoxide autoxidation, were identified and th...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(87)90093-7
更新日期：1987-01-01 00:00:00
abstract：:Phenazines, naturally produced by bacteria and archaeal Methanosarcina species are nitrogen-containing tricyclic molecules with antibiotic, antitumoral, and antiparasitic activities. Phenazines are used as electron acceptors-donors in wide range of fields including environmental biosensors. In this study, the inhibito...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2019.108845
更新日期：2019-12-01 00:00:00
abstract：:Lactosyl-Sepharose binding proteins (LSBPs) were recently described in human pancreatic ductal adenocarcinoma (PDAC) Suit2-007 cells regarding their lectin-like properties and role in metastasis. This study further investigated how calcium and galactose influence the binding of LSBPs to the lactosyl resin as well as t...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2020.109354
更新日期：2021-01-25 00:00:00
abstract：:Oral administration of O,O,S-trimethyl phosphorothioate (OOS), an impurity present in widely used organophosphorus insecticides, causes delayed toxicity in rats, i.e., death occurring as late as 28 days after the treatment. The signs of toxicity include body weight loss (maximum on day 3), red staining around the nose...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(83)90042-x
更新日期：1983-07-01 00:00:00
abstract：:Treatment of isolated mitochondria from rat hepatoma tumor cells (AS-30D) with the oxidant, t-butyl hydroperoxide (tBuOOH, 1 or 5 mumol/ml) resulted in the oxidation of glutathione (GSH to GSSG) and the formation of protein-glutathione mixed disulfides (ProSSG). The GSSG was retained inside of the hepatoma mitochondri...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(92)90073-t
更新日期：1992-09-28 00:00:00
abstract：:The effects of dietary treatment with clofibrate (0.5% w/w for 10 days) on the livers of selenium-deficient male rats were examined. The peroxisome proliferation (as determined by electron microscopy) in the livers of selenium-deficient animals was much less pronounced than in the case of selenium-adequate rats and no...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(92)90052-m
更新日期：1992-11-30 00:00:00
abstract：:Mice were given an oral dose of glutathione (GSH) (100 mg/kg) and concentrations of GSH were measured at 30, 45 and 60 min in blood plasma and after 1 h in liver, kidney, heart, lung, brain, small intestine and skin. In control mice, GSH concentrations in plasma increased from 30 microM to 75 microM within 30 min of o...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(91)90033-4
更新日期：1991-01-01 00:00:00
abstract：:Penicillamine (I) and certain related compounds are known to reduce the skin tensile strength (sts) of rat dorsal skin when they are given in the diet. This effect seems significant to studies of the biochemistry of collagen and of diseases of collagen, perhaps including the arthritides. The reduction of sts appears t...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(78)90024-8
更新日期：1978-06-01 00:00:00
abstract：:Esophageal squamous cell carcinoma (ESCC), the main subtype of esophageal cancer, is the eighth most common cancer worldwide. Cell adhesion molecule 2 (CADM2) has been reported to be a tumor suppressor and is usually downregulated in several cancers. However, the role of CADM2 in ESCC remains unknown. The aim of the p...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2018.04.021
更新日期：2018-05-25 00:00:00
abstract：:Butyrylcholinesterase (BChE) is the leading pretreatment candidate against exposure to organophosphates (OPs), which pose an ever increasing public and military health. Since respiratory failure is the primary cause of death following acute OP poisoning, an inhaled BChE therapeutic could prove highly efficacious in pr...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2012.11.004
更新日期：2013-03-25 00:00:00
abstract：:Methylglyoxal (2-oxopropanal) is a cytotoxic compound that can be formed endogenously as a by-product of glycolytic pathway; so its concentration is expected to increase when glycolysis activity increases such as during embryo development. In this work we study the effect of exogenous methylglyoxal on development and ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(98)00048-9
更新日期：1998-07-24 00:00:00
abstract：:The hypolipidemic fibrates have been identified as agonists of the peroxisome proliferator-activated receptor alpha (PPARalpha), which plays a critical role in the regulation of cardiac fatty acid metabolism. Despite the widespread clinical use of fibrates, their role in myocardial oxidative stress and fatty acid comp...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2006.02.003
更新日期：2006-04-15 00:00:00
abstract：:Since aldose reductase is localized primarily in lens epithelial cells, osmotic insults induced by the accumulation of sugar alcohols occur first in these cells. To determine whether the accumulation of sugar alcohols can induce lens epithelial cell death, galactose-induced apoptosis has been investigated in dog lens ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(00)00289-1
更新日期：2001-01-30 00:00:00
abstract：:Depression is a common neuropsychiatric disorder whose pathophysiology has been associated with glutamatergic excitotoxicity. Thus, the research for new antidepressant strategies with the ability to mitigate glutamate toxicity has received growing attention. Given this background, the present study sought to investiga...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2019.108843
更新日期：2019-12-01 00:00:00
abstract：:Posterior salivary gland (PSG) toxins are high molecular weight toxins secreted by cephalopods and gastropods which possess immense potentials in biomedical applications. In the present study, the biomedical potentials of the PSG toxin from the cuttlefish, S. pharaonis was determined in vitro and in vivo. The cytostat...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2017.04.002
更新日期：2017-06-25 00:00:00
abstract：:This study assessed the effect of the combination of anethole and ibuprofen in comparison with monotherapy by either drug alone, using two in vivo inflammatory models, namely the pleurisy and paw edema in rats. We also measured the levels of the TNF protein in plasma, and the ability of anethole to inhibit, in vitro, ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2015.10.013
更新日期：2015-12-05 00:00:00
abstract：:The glutathione-S-transferases (GST) are a major contributor to the eukaryotic cell's defences against chemical and oxidative stress. However, the role of individual GST isoenzymes in conferring resistance to xenobiotics has not been fully determined. We have examined the effect of the rat GSTA5 isoenzyme in the detox...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(02)00023-6
更新日期：2002-05-20 00:00:00
abstract：:Cisplatin induces acute renal failure in humans and mice.Tubular apoptosis, necrosis and inflammation are the primary pathogenesis of cisplatin-induced acute kidney injury(AKI). We previously reported that the depletion of Numb from proximal tubules exacerbates tubular cells apoptosis in cisplatin-induced AKI, however...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2020.109251
更新日期：2020-10-01 00:00:00
abstract：:Sulfation and sulfate conjugate hydrolysis play an important role in metabolism, and are catalysed by members of the sulfotransferase and sulfatase enzyme super-families. In general, sulfation is a deactivating, detoxication pathway, but for some chemicals the sulfate conjugates are much more reactive than the parent ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/s0009-2797(97)00117-8
更新日期：1998-02-20 00:00:00
abstract：:We report here for the first time that germanium oxide (GeO(2)) blocks cell progression. GeO(2) is not genotoxic to Chinese hamster ovary (CHO) cells and has limited cytotoxicity. However, GeO(2) arrests cells at G2/M phase. The proportion of cells stopped at G2/M phase increased dose-dependently up to 5 mM GeO(2) whe...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(02)00072-8
更新日期：2002-10-20 00:00:00
abstract：:Caffeine was found to potentiate the cytotoxic effect of misonidazole (1-(2-nitroimidazol-1-yl)-3-methoxy-2-propanol) towards mammalian cells in vitro. This enhancement of toxicity is shown to occur under both aerobic and hypoxic conditions. Split dose experiments indicate that the general shape of the hypoxic surviva...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(82)90089-8
更新日期：1982-08-01 00:00:00
abstract：:We examined radiosensitizing properties of two novel platinum complexes (ethylenediamine(L-malato)platinum(II)), Pt1 and bis(1-ethylimidazole(L-malato)platinum(II)), Pt4. Initial double strand break (DSB) level and DSB rejoining were measured, using pulse field gel electrophoresis (PFGE) in human G1 phase lymphocytes ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(03)00106-6
更新日期：2003-10-25 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：:The conditions for alternating current (a.c.) voltammetric DNA determinations have been investigated with respect to its use with alkaline filter elution techniques at low DNA concentrations. In inorganic electrolyte solutions three current peaks can be distinguished: peak I around -1.1 V caused by the reorientation o...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(90)90038-o
更新日期：1990-01-01 00:00:00
abstract：:The renin-angiotensin-aldosterone system (RAAS) is a hormonal system that has a critical role in maintaining the normotensive state and electrolyte balance of the organism. The RAAS also has an important influence in the development of various pathophysiological conditions especially those concerning the renal system,...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/j.cbi.2020.109145
更新日期：2020-08-01 00:00:00
abstract：:Rabbit bone marrow mitochondria, stripped of their outer membrane (mitoplasts), have been shown to carry out the NADPH-dependent bioactivation of radiolabelled benzene in vitro to metabolites capable of covalently binding to mtDNA, thereby inhibiting transcription. The metabolites of benzene produced in bone marrow ce...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(84)90057-7
更新日期：1984-04-01 00:00:00
abstract：:Montelukast is a cysteinyl leukotriene (CysLT) receptor antagonist with efficacy against a variety of diseases, including asthma and inflammation-related conditions. However, various neuropsychiatric events (NEs) suspected to be related to montelukast have been reported recently, with limited understanding on their as...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2020.109134
更新日期：2020-08-01 00:00:00
abstract：:A novel post-addition method, based on the trapping of ABTS-radicals, is applied for studying the total antioxidant capacity of seminal plasma. A remarkable profile is observed, in which seminal plasma quenches radicals in a continuous, relatively slow fashion. Five putative antioxidants present in seminal plasma were...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(00)00179-4
更新日期：2000-07-03 00:00:00
