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D A Basketter et al.
Contact dermatitis, 34(1), 55-58 (1996-01-01)
Unlike the closely related chemical dinitrochlorobenzene (DNCB), which is a very strong contact allergen, dichloronitrobenzene (DCNB) has been widely regarded as a non-allergen and, as such, a useful control for its strongly sensitizing counterpart. Nevertheless, it is still an organic...
V A Catania et al.
Life sciences, 68(4), 467-474 (2001-02-24)
Gender-related differences and the regulation by testosterone of glutathione S-transferase were studied in rat jejunum. We analyzed enzyme activity and the relative content of GST subunits. Four experimental groups of adult rats were studied: normal males, castrated males, castrated males...
K Kitani et al.
Mechanisms of ageing and development, 111(2-3), 211-221 (2000-02-03)
Limited information is available on the upregulation of endogenous antioxidant enzymes by means of administering various pharmaceuticals and/or chemicals. It has been reported that ursodeoxycholic acid (UDCA), a bile acid originally identified from black bear bile (a Chinese medicine, Yutan)...
E Egaas
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 127(2), 117-122 (2000-11-18)
Atrazine (1,000 ppm), endosulfan (1 ppm) or butylated hydroxyanisole (BHA) (1,000 ppm) added to a semi-synthetic diet of Orthosia gothica for 2 days in the last instar did not change the soft tissue cytosolic glutathione-S-transferase (GST) activities towards 1-chloro-2,4-dinitrobenzene (CDNB)...
M Arivazhagan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(2), 376-383 (2011-04-07)
The Fourier-transform infrared spectrum of 1,2-dichloro-4-nitrobenzene (DCNB) was recorded in the region 4000-400cm(-1). The Fourier-transform Raman spectrum of DCNB was also recorded in the region 3500-50cm(-1). Quantum chemical calculations of energies, geometrical structure and vibrational wavenumbers of DCNB were carried...
V Krishnakumar et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 86, 196-204 (2011-11-23)
The vibrational spectra of 1,2-dichloro-4-nitrobenzene (DCNB) and 2,3,5,6-tetrachloro-1-nitrobenzene (TCNB) were computed using B3LYP methodology with 6-31G* basis set. The solid phase FTIR and FT-Raman spectra were recorded in the region 4000-400 cm(-1) and 4000-50 cm(-1), respectively. A similarity was achieved...
Susila Sivapathasundaram et al.
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 134(1), 169-173 (2003-01-14)
The ability of cattle and deer liver to catalyse xenobiotic conjugation reactions was investigated and compared with that of the rat. Marked differences in the activity of these enzymes were noted between the domestic animals and rats. Hepatic microsomal epoxide...
N Inoue et al.
Xenobiotica; the fate of foreign compounds in biological systems, 29(1), 43-51 (1999-03-17)
1. The circadian variation in glutathione S-transferase (GST) activity was studied in the hepatic cytosolic fraction of the male and female mouse. A circadian variation in GST activity towards 1-chloro-2,4-dinitrobenzene (CDNB) was observed in the male, the activity being higher...
Yangchun Han et al.
Pesticide biochemistry and physiology, 121, 129-135 (2015-06-06)
Metabolic resistance to synthetic pyrethroids in Helicoverpa   armigera has recently been associated with the chimeric cytochrome P450 enyzme CYP337B3. One variant of the latter, CYP337B3v1, accounts for 40-50 fold resistance to fenvalerate in an Australian population while a second variant...
Kazunori Fujimoto et al.
Drug metabolism and disposition: the biological fate of chemicals, 34(9), 1495-1501 (2006-06-09)
Glutathione S-transferase Mu 1 (GSTM1) has been regarded as one of the key enzymes involved in phase II reactions in the liver, because of its high expression level. In this study, we generated mice with disrupted glutathione S-transferase Mu 1...
L O Hansson et al.
Protein science : a publication of the Protein Society, 8(12), 2742-2750 (2000-01-13)
Two human Mu class glutathione transferases, hGST M1-1 and hGST M2-2, with high sequence identity (84%) exhibit a 100-fold difference in activities with the substrates aminochrome, 2-cyano-1,3-dimethyl-1-nitrosoguanidine (cyanoDMNG), and 1,2-dichloro-4-nitrobenzene (DCNB), hGST M2-2 being more efficient. A sequence alignment with...
Daphnee S Pushparajah et al.
Mutagenesis, 23(4), 299-308 (2008-04-05)
The cytosolic glutathione S-transferases (GSTs) comprise a pivotal enzyme system protecting the cell from electrophilic compounds. It plays a major role in the detoxication of the primary and dihydrodiol epoxides of polycyclic aromatic hydrocarbons (PAHs), so that modulation of this...
Toshiyuki Watanabe et al.
Archives of toxicology, 80(5), 250-257 (2005-10-21)
We have reported the existence of low glutathione S-transferase (GST) dogs whose GST activity to 1,2-dichloro-4-nitrobenzene (DCNB) as a substrate (GST-D activity) is quite low, and have also reported significant individual differences in dog liver GST-D activity. The dogs were...
W Dekant et al.
Chemico-biological interactions, 116(1-2), 31-43 (1999-01-07)
Perchloroethene (Per) is a widely used industrial solvent and common environmental contaminant. In rats, long-term inhalation of Per is known to cause a small increase in the incidence of renal tubule cell tumors in males only; renal toxicity is seen...
J E van Hylckama Vlieg et al.
Journal of bacteriology, 182(7), 1956-1963 (2000-03-14)
The genes involved in isoprene (2-methyl-1,3-butadiene) utilization in Rhodococcus sp. strain AD45 were cloned and characterized. Sequence analysis of an 8.5-kb DNA fragment showed the presence of 10 genes of which 2 encoded enzymes which were previously found to be...
Nattaya Konsue et al.
Molecular nutrition & food research, 54(10), 1477-1485 (2010-05-05)
A principal mechanism of the chemopreventive activity of isothiocyanates is detoxification of the genotoxic metabolites of chemical carcinogens through up-regulation of enzymes such as quinone reductase and the glutathione-S-transferases. In this study we report, for the first time, the potential...
Jeerang Wongtrakul et al.
Journal of insect science (Online), 12, 107-107 (2013-02-27)
Glutathione transferases (GSTs) are a family of multifunctional enzymes involved in xenobiotic biotransformation, drug metabolism, and protection against oxidative damage. The p38b mitogen-activated protein kinase is involved in cellular stress response. This study screened interactions between Drosophila melanogaster Meigen (Diptera:...
Toshiyuki Watanabe et al.
Archives of toxicology, 78(4), 218-225 (2003-12-20)
Liver and kidney glutathione S-transferase (GST) activities to 1,2-dichloro-4-nitrobenzene (DCNB) as a substrate (GST-D activities) were measured in 280 dogs from five different breeders, and significant individual differences in this activity were observed in both organs. Interestingly, 34 out of...
I Setlíková et al.
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 149(4), 515-523 (2008-12-23)
Liver and gills of roach (Rutilus rutilus) and silver carp (Hypophthalmichthys molitrix) were examined for glutathione S-transferases (GSTs) contents and their substrate specificity and capacity to biotransform microcystin-LR (MC-LR). GSTs and other glutathione (GSH) affine proteins were purified using a...
Shingo Arakawa et al.
Drug metabolism and disposition: the biological fate of chemicals, 38(9), 1545-1552 (2010-06-22)
A specific substrate to Mu class glutathione S-transferase (GST), 1,2-dichloro-4-nitrobenzene (DCNB), was administered to mice with a disrupted GST Mu 1 gene (Gstm1-null mice) to investigate the in vivo role of murine Gstm1 in toxicological responses to DCNB. A single...
V R Yoxall et al.
Archives of toxicology, 78(8), 477-482 (2004-03-23)
Rats were exposed to black tea (2.5% w/v) as their sole drinking liquid for either 1 day or 1 month, while controls were maintained on water. After this treatment period, all animals received a single oral dose IQ (2-amino-3-methylimidazo-[4,5-f]quinoline), and...
Effects of beta-naphthoflavone on the levels of glutathione S-transferase from liver of Pacu, Piaractus mesopotamicus.
L Camacho et al.
Bulletin of environmental contamination and toxicology, 64(2), 191-196 (2000-02-05)
Enamul Hoque et al.
Applied and environmental microbiology, 73(8), 2697-2707 (2007-02-13)
The occurrence and activation of glutathione S-transferase (GST) and the GST activities in biofilms in cold sulfidic spring waters were compared to the occurrence and activation of GST and the GST activities of the aquatic fungal strains EH5 and EH7...
H Dai et al.
Journal of biochemical toxicology, 11(2), 85-96 (1996-01-01)
Cytosolic glutathione S-transferase (GST) activities toward 1-chloro-2,4-dinitro-benzene (CDNB), 1,2-dichloro-4-nitrobenzene (DCNB), ethacrynic acid (EA), 1,2-epoxy-3-(p-nitrophenoxyl)propane (EPNP), trans-4-phenyl-3-buten-2-one(t-PBO), delta 5-androstene-3,17-dione (ASD) and trans-stilbene oxide (t-SO); cytosolic glutathione peroxidase activity toward cumene hydroperoxide (CuOOH); and microsomal GST activity toward CDNB were examined in...
K L Maier et al.
Inhalation toxicology, 11(1), 19-35 (1999-06-24)
Airway epithelial surface is the primary target of airborne pollutants. To estimate the distribution of xenobiotic-metabolizing enzymes in the respiratory tract of dogs, epithelia from different airway sites of four animals were analyzed for metabolism of sulfite (sulfite oxidase) and...
Gabriela Nava et al.
Parasitology research, 101(5), 1373-1381 (2007-08-21)
Glutathione S-transferase activity has been shown to be associated with the microsomal fraction of Taenia solium. Electron microscopy and subcellular enzyme markers indicate the purity of the microsomal fraction that contains the glutathione S-transferase activity. T. solium microsomes were solubilized...
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