Abstract：
:A chromatographic procedure for improved separation of deoxyribonucleosides and methylated deoxyribonucleosides is described. DNA was isolated from liver and small intestine of rats treated with [14C]dimethylnitrosamine ([14C]DMN) or N-[3H]methyl-N-nitrosourea ([3H]MNU), and the purified DNA was hydrolyzed enzymatically. The deoxyribonucleosides were chromatographed on an Aminex A-6 cation exchange column at 37 degrees C with 0.4 M ammonium formate, pH 4.5, as eluant. In addition to showing the presence of the expected alkylated products, N7-methyldeoxyguanosine (determined as N7-methylguanine) and O6-methyldeoxyguanosine, several other minor methylated products were found in liver and intestinal DNA of rats treated with DMN or MNU. Two of these products are believed to be N3-methylthymidine and O4-methylthymidine.
journal_name
Chem Biol Interactjournal_title
Chemico-biological interactionsauthors
Daoud AH,Irving CCdoi
10.1016/0009-2797(77)90123-5subject
Has Abstractpub_date
1977-02-01 00:00:00pages
135-43issue
2eissn
0009-2797issn
1872-7786pii
0009-2797(77)90123-5journal_volume
16pub_type
杂志文章abstract：:Metabolism of the tobacco specific nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) in rats was compared to metabolism in primary lung and liver cells. Untreated rats and rats pretreated with phenobarbital, acetone or phenethyl isothiocyanate (PEITC) were used for all experiments. Also the influence of...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(99)00083-6
更新日期：1999-04-15 00:00:00
abstract：:The effect of puromycin has been investigated on protein and glycoprotein synthesis and on ultrastructure of the Golgi complex from rat liver. Incorporation of [14C]leucine into protein in Golgi fractions and into serum proteins was depressed rapidly after puromycin treatment. In the serum proteins, incorporation retu...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(75)90100-3
更新日期：1975-09-01 00:00:00
abstract：:Exposure to perfluorocarboxylic acids, pthalate esters, and some hypolipidemic agents results in the proliferation of peroxisomes in the rodent liver. The structural diversity of these compounds suggests mechanistic diversity in their toxicity as well. To establish reliable biomarkers of peroxisome proliferation (PP) ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(95)03661-x
更新日期：1996-01-05 00:00:00
abstract：:Trans-4-acetylaminostilbene (trans-AAS) is a potent carcinogen and quite specifically produces sebaceous gland tumors, predominantly in the Zymbal's gland of rats. It is also acutely toxic to the rat glandular stomach. Recent results have shown that these target tissues are not notably exposed to reactive metabolites ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(85)80154-x
更新日期：1985-06-01 00:00:00
abstract：:The combined effects of ethanol and hypoxia on the conversion of xanthine dehydrogenase (D form) to xanthine oxidase (O form) and on the leakage of the enzyme from isolated rat hepatocytes was studied. Time-dependent death of cells occurred during incubation in hypoxic conditions. Ethanol (40 mM) had only a moderate e...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(92)90093-z
更新日期：1992-06-15 00:00:00
abstract：:The on-going pandemic of COVID-19 wreaked by a viral infection of SARS-CoV-2, has generated a catastrophic plight across the globe. Interestingly, one of the hallmarks of COVID-19 is the so-called 'cytokine storm' due to attack of SARS-Cov-2 in the lungs. Considering, mesenchymal stem cells (MSCs) therapy could contri...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/j.cbi.2020.109298
更新日期：2020-12-01 00:00:00
abstract：:Although the involvement of cholinesterases (ChEs) in the removal of acetylcholine (ACh) at cholinergic synapses is firmly established, there is evidence to suggest that acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) take part in several cellular processes. The early expression of ChE genes during embry...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2005.10.035
更新日期：2005-12-15 00:00:00
abstract：:Damage of cell membranes by reactive oxygen species results in the formation of toxic lipid peroxides which may ultimately lead to cell death. Among the best characterized intermediates of oxidative stress are the unsaturated aldehydes 4-hydroxynon-2-enal (4-HNE) and its oxidized counterpart 4-oxonon-2-enal (4-ONE). 4...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2008.10.021
更新日期：2009-03-16 00:00:00
abstract：:L-Xylulose reductase (XR) catalyzes the oxidoreduction between xylitol and L-xylulose in the uronate cycle. The enzyme has been shown to be identical to diacetyl reductase, an enzyme that reduces alpha-dicarbonyl compounds. XR belongs to the short-chain dehydrogenase/reductase family, and shows high sequence identity ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(02)00217-x
更新日期：2003-02-01 00:00:00
abstract：:Drug induced liver injury (DILI), a major cause of pre- and post-approval failure, is challenging to predict pre-clinically due to varied underlying direct and indirect mechanisms. Nevirapine, a non-nucleoside reverse transcriptase inhibitor (NNRTI) and Ritonavir, a protease inhibitor, are antiviral drugs that cause c...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2015.11.023
更新日期：2016-08-05 00:00:00
abstract：:We examined and compared enantioselectivity in the oxidation of propranolol (PL) by liver microsomes from humans and Japanese monkeys (Macaca fuscata). PL was oxidized at the naphthalene ring to 4-hydroxypropranolol, 5-hydroxypropranolol and side chain N-desisopropylpropranolol by human liver microsomes with enantiose...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(00)00174-5
更新日期：2000-06-15 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：:Wild-type human butyrylcholinesterase (BuChE) has proven to be an efficient bioscavenger for protection against nerve agent toxicity. Human acetylcholinesterase (AChE) has a similar potential. A limitation to their usefulness is that both cholinesterases (ChEs) react stoichiometrically with organophosphosphorus (OP) e...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2008.04.005
更新日期：2008-09-25 00:00:00
abstract：:It has been detected that hepatic adenosine A(2A) receptors play an active role in the pathogenesis of hepatic fibrosis and suggest a novel therapeutic target in the treatment and prevention of hepatic cirrhosis. In this paper we examined if our new triazine derivative (IMT) can inhibit ethanol-induced activation of H...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2011.10.004
更新日期：2012-01-05 00:00:00
abstract：:Mitochondrial dysfunction appears to contribute to some of the loss of function accompanying ageing. Mitochondria from aged tissue use oxygen inefficiently impairing ATP synthesis and results in increased oxidant production. A high flux of oxidants not only damages mitochondria, but other important cell biomolecules a...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(01)00268-x
更新日期：2001-11-28 00:00:00
abstract：:20(S)-protopanaxadiol (PPD) possesses various biological properties, including anti-inflammatory, antitumor and anti-fatigue properties. Recent studies found that PPD functioned as a neurotrophic agent to ameliorate the sensory deficit caused by glutamate-induced excitotoxicity through its antioxidant effects and exhi...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2017.11.008
更新日期：2018-01-05 00:00:00
abstract：:The present study aims to explore the effects of astaxanthin on the semen quality of diabetes mellitus (DM) KKAy mice. A total of 60 DM KKAy mice with similar body weights and initial blood glucose and serum lipid levels were assigned to four groups, namely, one control and three astaxanthin treatments (10, 50, or 100...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2020.109303
更新日期：2020-12-01 00:00:00
abstract：:Gentamicin-induced nephrotoxicity has been well documented, although the causing mechanisms and preventative measures need further investigation. The current study aimed to explore the potential protective impacts of celecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor, on gentamicin-induced nephrotoxicity and th...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2019.108863
更新日期：2020-01-05 00:00:00
abstract：:Selenium compounds such as methylseleninic acid (MSA) and sodium selenite (SS) have been widely evaluated as potential anti-cancer agents in the clinical setting. Primary effusion lymphoma (PEL) is a non-Hodgkin's B-cell lymphoma, associated with immunosuppressed individuals, such as post-transplant or AIDS patients. ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2017.01.027
更新日期：2017-03-25 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：:In a preliminary study screening anti-proliferative natural alkaloids, a very potent benzophenanthridine, chelidonine showed strong cytotoxicity in cancer cells. While several modes of death have been identified, most of anti-cancer attempts have focused on stimulation of cells to undergo apoptosis. Chelidonine seems ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2014.09.013
更新日期：2014-11-05 00:00:00
abstract：:The genome of Escherichia coli K12 contains 9 open reading frames encoding aldo/keto reductases (AKRs) that are differentially regulated and sequence diverse. A significant amount of data is available for the E. coli AKRs through the availability of gene knockouts and gene expression studies, which adds to the biochem...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2012.10.008
更新日期：2013-02-25 00:00:00
abstract：:We are investigating treatments for cocaine abuse based on viral gene transfer of a cocaine hydrolase (CocH) derived from human butyrylcholinesterase, which can reduce cocaine-stimulated locomotion and cocaine-primed reinstatement of drug-seeking behavior in rats for many months. Here, in mice, we explored the possibi...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2012.08.015
更新日期：2013-03-25 00:00:00
abstract：:Sophoricoside (SOPH) is an isoflavone glycoside isolated from the fruits of Sophora japonica. Since its first isolation in 1961, there are rare findings about the effects of SOPH on reproductive system. In the present study, the pregnant mice administrated by different doses of SOPH were used to explore the effect of ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2014.05.009
更新日期：2014-08-05 00:00:00
abstract：:Mammalian steroid 5β-reductases belong to the Aldo-Keto Reductase 1D sub-family and are essential for the formation of A-ring 5β-reduced steroids. Steroid 5β-reduction is required for the biosynthesis of bile-acids and the metabolism of all steroid hormones that contain a Δ4-3-ketosteroid functionally to yield the 5β-...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2019.03.025
更新日期：2019-05-25 00:00:00
abstract：:In the series of tetraalkylammonium ions from tetramethylammonium to tetra-n-heptylammonium, tetra-n-pentylammonium ion was a potent protector of both murine L1210 leukemia and bone marrow progenitor cells against mechlorethamine cytotoxicity. It was also a non-competitive inhibitor of choline uptake. Phosphonium anal...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(82)90095-3
更新日期：1982-06-01 00:00:00
abstract：:Excessive osteoclast leads to the imbalance in bone reconstruction and results in osteolytic diseases, such as osteoporosis and rheumatic arthritis. Integrin αvβ3 abundantly expresses on osteoclast and plays a critical role in the formation and function of osteoclast, therefore, blockage of αvβ3 has become an attracti...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2020.109179
更新日期：2020-08-25 00:00:00
abstract：:The pyrimidine analog, 5-azacytidine (AZA-CR), has been shown to increase the expression of the metallothionein (MT) gene and to induce tolerance to cadmium toxicity. Since incorporation into DNA of AZA-CR appears to be required for this effect, the deoxynucleoside of AZA-CR should also be effective. Therefore, this s...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(88)90071-3
更新日期：1988-01-01 00:00:00
abstract：:The present study was designed to investigate the potential therapeutic effect of trikatu, an herbal compound and its underlying molecular mechanism in rats with adjuvant-induced arthritis (AIA). Our results indicate that trikatu (1000 mg/kg/b.wt. oral) administration suppressed the production of pro-inflammatory cyto...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2016.09.003
更新日期：2016-10-25 00:00:00
abstract：:Addition of the tumor promoter phorbol myristate acetate to polymorphonuclear leukocytes results in the oxidation of the arylamine carcinogens; [14C]benzidine, N-[14C]methylaminoazobenzene and [14C]aminofluorene to reactive intermediate(s) that bind irreversibly to the leukocyte DNA. The binding was dependent on oxyge...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(85)80081-8
更新日期：1985-02-01 00:00:00
