Abstract：
:The interaction of the potent tumor-promoting agent phorbol myristate acetate (PMA) with purified rat liver plasma membranes suspended in phosphate-buffered saline (PBS), pH 7.4, was studied by fluorescence spectrophotometry. Exposure of membranes to PMA caused up to 21% decrease of the native membrane emission, i.e. the fluorescence of both tryptophan and tyrosine, compared to non-treated membranes. The decrease in the membrane emission varied with both the PMA and the membrane concentration. Treatment of rat liver plasma membranes with biologically less active analogs of PMA, phorbolol myristate acetate (PHMA) and 4a alpha-phorbol didecanoate (4a alpha-PDD), resulted in a 5-10% decrease of the native membrane emission. These studies suggest that PMA causes alterations in membrane structure which are due, at least in part, to conformational changes in the membrane proteins.
journal_name
Chem Biol Interactjournal_title
Chemico-biological interactionsauthors
van Duuren BL,Banerjee S,Witz Gdoi
10.1016/0009-2797(76)90149-6subject
Has Abstractpub_date
1976-11-01 00:00:00pages
233-46issue
3eissn
0009-2797issn
1872-7786pii
0009-2797(76)90149-6journal_volume
15pub_type
杂志文章abstract：:Treatment of animals with hydrazine causes the accumulation of triglycerides in the liver but the mechanism remains unclear. Therefore, the effect of hydrazine on hepatic triglyceride synthesis and subsequent transport was studied in a hepatocyte model, in vitro in order to isolate liver cells from extrahepatic influe...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(97)00090-2
更新日期：1997-11-28 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：:Ultraviolet absorption data and thermal chromatography through hydroxyapatite (HAP) column revealed that furazolidone treatment of Vibrio cholerae cells produced more than 80% of DNA reversibly bihelical due to the formation of interstrand cross-links and the reaction obeyed a first order relation. Sensitivities of th...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(83)90078-9
更新日期：1983-08-01 00:00:00
abstract：:The dynamic development of metal-containing anticancer drugs has started since the discovery of cis-diamminedichloroplatinum(II). For many years it was believed that trans platinum(II) compounds were non-active as antitumour agents because trans-diamminedichloroplatinum is biologically inactive although it binds to DN...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2007.04.001
更新日期：2007-06-30 00:00:00
abstract：:Known spectroscopic and kinetic data are used to formulate pathways of the physiological and transfer reactions and the substrate inhibition of phenol sulfotransferase. Kinetic mechanisms indicate that release of PAP from enzyme complex is required for the physiological reaction but not for the transfer reaction. The ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(97)00127-0
更新日期：1998-02-20 00:00:00
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：:It was estimated, in a rat model of moderate and relatively high chronic human exposure to cadmium (Cd), whether enhanced zinc (Zn) consumption may prevent Cd-induced liver injury and if the possible protective effect of this bioelement depends on its intake. For this purpose, the structure and function of the liver o...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2011.05.008
更新日期：2011-09-30 00:00:00
abstract：:Genistein (4', 5, 7-trihydroxyisoflavone), a naturally occurring flavonoid characteristic of Leguminoseae plants, is a phyto-oestrogen exerting oestrogenic activity as both an agonist and an antagonist substance. A large body of evidence suggests that genistein possesses many physiological and pharmacological properti...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/j.cbi.2017.02.012
更新日期：2017-04-25 00:00:00
abstract：:To evaluate the protective role of cell glutathione (GSH) against the toxicity of cadmium, the effect of GSH depletion on the metal toxicity was investigated and the role of glutathione was compared with that of zinc-induced metallothioneins (MTs). A 6-h incubation of cultured Chinese hamster V79 cells with 0.2 mM L-b...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(88)90026-9
更新日期：1988-01-01 00:00:00
abstract：:The electrophilic metabolites of the polyaromatic hydrocarbon naphthalene have been shown to bind covalently to proteins and covalent adduct formation correlates with the cytotoxic effects of the chemical in the respiratory system. Although 1,2-naphthalene epoxide, naphthalene diol epoxide, 1,2-naphthoquinone, and 1,4...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2012.05.009
更新日期：2012-08-30 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：:The transformation of the hexachloro-1,3-butadiene metabolite S-(1,2,3,4,4-pentachlorobuta-1,3-dienyl)-L-cysteine (PCBC) by bacterial cysteine conjugate beta-lyase (beta-lyase) and by N-dodecylpyridoxal bromide (PLP-Br) was investigated using GC/MS to identify products formed. PCBC was transformed by both bacterial be...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(88)90093-2
更新日期：1988-01-01 00:00:00
abstract：:Human 17β-hydroxysteroid dehydrogenase (17β-HSD) type 1 is an enzyme that acts at the pre-receptor level. It catalyzes the NADPH-dependent reduction of the weak estrogen estrone into the most potent estrogen 17β-estradiol, which exerts proliferative effects via estrogen receptors. Overexpression of 17β-HSD type 1 in e...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2011.01.002
更新日期：2011-05-30 00:00:00
abstract：:The cytochrome P450 isoforms responsible for the regio-selective metabolism of benz[a]anthracene (BA) are poorly defined but as with other polycyclic aromatic hydrocarbons (PAHs) may include members of the CYP2C sub-family. Since the expression of some of these is regulated in a gender-specific manner and may be alter...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(00)00147-2
更新日期：2000-03-15 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：: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：:Endometriosis is a frequent benign gynecological disease characterized by endometrial tissue outside the uterine cavity. The estimated prevalence in the general population is 6-10%, but this reaches 30-50% in women with infertility and/or pain. As ectopic tissue within the pelvic cavity provokes inflammation, endometr...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2014.11.009
更新日期：2015-06-05 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：:Pretreatment of secondary cultures of Syrian hamster embryo cells with 7,8-benzoflavone (7,8-BF) inhibited both the metabolism of 7,12-dimethylbenz[alpha] anthracene (DMBA) and the formation of DMBA-DNA adducts. The DMBA-deoxyribonucleoside adducts from 7,8-BF-treated cultures had the same elution profiles on Sephadex...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(78)90052-2
更新日期：1978-02-01 00:00:00
abstract：:11beta-Hydroxysteroid dehydrogenase type 1 (11beta-HSD 1) physiologically catalyzes the interconversion of receptor-active 11-hydroxy glucocorticoids (cortisol) to their receptor-inactive 11-oxo metabolites (cortisone), thereby acting as important pre-receptor control device in regulating access of glucocorticoid horm...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(02)00180-1
更新日期：2003-02-01 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：:The glyoxalase system is a metabolic pathway that catalyses the detoxification of alpha-oxoaldehydes RCOCHO to corresponding aldonic acids RCH(OH)CO2H. It thereby protects cells from alpha-oxoaldehyde-mediated formation of advanced glycation endproducts (AGEs). It is comprised of two enzymes, glyoxalase I and glyoxala...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/s0009-2797(97)00157-9
更新日期：1998-04-24 00:00:00
abstract：:This laboratory has described the azoreduction of p-dimethylaminoazobenzene (1c) by rat liver microsomal cytochrome P-450. To elucidate the mechanisms involved, the reduction of structurally related azobenzenes by hepatic microsomes was investigated. High substrate reactivity was observed for 1c, its corresponding sec...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(89)90099-9
更新日期：1989-01-01 00:00:00
abstract：:2-Hydroxy-3',5,5'-trimethoxychalcone (named DK-139) is a synthetic chalcone derivative that has anti-inflammatory, anti-tumor, and endoplasmic reticulum-mediated apoptosis activities. However, the mode of action of DK-139 on reactive oxygen species (ROS)-induced apoptosis remains unknown. In this study, we found that ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2018.11.003
更新日期：2019-01-25 00:00:00
abstract：:Examination of the high pressure liquid chromatographic profiles of ethyl acetate extractable benzo [a] pyrene (B(a)P)-metabolites from human lung fibroblast and type II epithelial cells after S phase entry indicated that B(a)P-7,8-diol and 9,10-diol species were produced following the oxygenation of B(a)P. These meta...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(85)90009-2
更新日期：1985-12-31 00:00:00
abstract：:Dietary flavonoid quercetin has been suggested as a cancer chemopreventive agent, but the mechanisms of action remain unclear. This study investigated the influence of quercetin on p38-MAPK and the potential regulation of the nuclear transcription factor erythroid-2p45-related factor (Nrf2) and the cellular antioxidan...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2011.12.005
更新日期：2012-01-25 00:00:00
abstract：:Little is known about the roles of aldehyde dehydrogenases in non-vertebrate animals. We recently showed that in Drosophila melanogaster, an enzyme with ∼70% amino acid identity to mammalian ALDH2 is necessary for detoxification of dietary ethanol. To investigate other functions of this enzyme, DmALDH, encoded by the ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2011.01.031
更新日期：2011-05-30 00:00:00
abstract：:Phagocytic cells, especially neutrophils (PMNs) are specialized in the production of reactive oxygen species (ROS) to kill pathogenic agents, but an excessive ROS production is associated with tissue damages and inflammatory diseases. Phagocytes are thus prime therapeutic targets to control inflammatory events associa...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2012.12.010
更新日期：2013-01-25 00:00:00
abstract：:The Nuclear Factor-kappa B (NF-κB) pathway is vital for immune system regulation and pro-inflammatory signaling. Many inflammatory disorders and diseases, including cancer, are linked to dysregulation of NF-κB signaling. When macrophages recognize the presence of a pathogen, the signaling pathway is activated, resulti...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2017.12.019
更新日期：2018-01-25 00:00:00
abstract：:High content of hydroxyflavones in fruits, vegetables, cereals and herbs makes them a common component of the human diet. Because of their antioxidant, antiviral, antibacterial, anti-inflammatory, anticancer properties they still pay an attention of many scientific centers. Hydroxyflavones may form complexes with meta...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/j.cbi.2017.06.016
更新日期：2017-08-01 00:00:00
