Abstract：
:Genistein and daidzein are the main isoflavones in soy. Their potential beneficial or adverse effects in males like the prevention of prostate cancer or the impact on reproductive functions are controversially discussed. Major determinants of their bioactivity are the absorption and biotransformation of isoflavones. In this study, we focused on the influence of testosterone on plasma availability and phase II metabolism of isoflavones. Male Wistar rats, receiving an isoflavones rich diet, were randomized into three groups: Two groups were orchiectomized (ORX) at postnatal day (PND) 80 and treated for 11 days with testosterone propionate (TP) (ORX TP group) or a vehicle (ORX group) after a 7 days lasting hormonal decline. The third group served as control and remained intact. Rats were sacrificed at PND 98. ORX rats had reduced isoflavones plasma levels. Differently regulated mRNA expressions of transporters relevant for transport of phase II metabolites in liver and kidney may be responsible for this reduction, more precisely Slc10a1 and Slc21a1 in kidney as well as Slc22a8 in liver. While main phase II metabolites in intact rats were disulfates and sulfoglucuronides, the amount of sulfate conjugates was significantly diminished by ORX. In accordance with that, mRNA expression of different sulfotransferases was reduced in liver by ORX. The observed effects could be almost restored by TP treatment. In conclusion, testosterone, and likely further androgens, has a huge impact on phase II metabolism and availability of isoflavones by influencing the expression of different sulfotransferases and transporters.
journal_name
Arch Toxicoljournal_title
Archives of toxicologyauthors
Soukup ST,Müller DR,Kurrat A,Diel P,Kulling SEdoi
10.1007/s00204-016-1853-1subject
Has Abstractpub_date
2017-04-01 00:00:00pages
1649-1661issue
4eissn
0340-5761issn
1432-0738pii
10.1007/s00204-016-1853-1journal_volume
91pub_type
杂志文章abstract：:Free radical processes are proposed to play a crucial role in the development of procainamide adverse effects. Therefore, selenium, as a potent antioxidant, may modified procainamide toxicity. To test this hypothesis plasma and liver thiobarbituric acid-reacting substances (TBARS), plasma antioxidant activity (AOA), e...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF01973693
更新日期：1993-01-01 00:00:00
abstract：:A new strategy for the evaluation of mixtures is presented. The mixture used was the organic extract of diesel exhaust particles (DEP). After extraction with dichloromethane (DCM), the crude extract was fractionated according to polarity into five fractions: aliphatic hydrocarbons, polycyclic aromatic hydrocarbons (PA...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050392
更新日期：1997-01-01 00:00:00
abstract：:Shaking behavior, so-called wet dog shakes (WDS), in rats is characteristic behavior indicating morphine abstinence in morphine-dependence and central excitation in relation to seizures elicited by chemicals or electrical stimulation. We have found that paraquat (PQ), a nonselective herbicide, administered systemicall...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040000196
更新日期：2001-02-01 00:00:00
abstract：:We investigated the influence of the dopamine antagonist haloperidol on the neurotransmitter content in the developing rat brain. Dopamine (DA), serotonin (5-HT) and the corresponding metabolites dopac, HVA and HIAA were determined in the corpus striatum of the rat between day 1 and day 21 pn by HPLC with electro-chem...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF01973388
更新日期：1992-01-01 00:00:00
abstract：:UDP-glucuronosyltransferases (UGTs) are involved in phase II conjugation reactions of xenobiotics and differences in their isoform activities result in interindividual kinetic differences of UGT probe substrates. Here, extensive literature searches were performed to identify probe substrates (14) for various UGT isofo...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-020-02765-8
更新日期：2020-08-01 00:00:00
abstract：:The use of new psychoactive substances (NPSs) as a substitute for illegal drugs is increasing rapidly and is a serious threat to public health. 25C-NBF is a newly synthesized phenethylamine-type NPS that acts as a 5-hydroxyindoleacetic acid (5-HT) receptor agonist, but little is known about its pharmacological effects...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-020-02740-3
更新日期：2020-07-01 00:00:00
abstract：:Multiple oximes have been synthesized and evaluated for use as countermeasures against chemical warfare nerve agents. The current U.S. military and civilian oxime countermeasure, 2-[(hydroxyimino)methyl]-1-methylpyridin-1-ium chloride (2-PAM), is under consideration for replacement with a more effective acetylcholines...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-012-0987-z
更新日期：2013-04-01 00:00:00
abstract：:Nanoparticles (NP) have a tendency to agglomerate after dispersion in physiological media, which can be prevented by the addition of serum. This may however result in modification of the toxic potential of particles due to the formation of protein corona. Our study aimed to analyze the role of serum that is added to i...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-016-1673-3
更新日期：2017-01-01 00:00:00
abstract：:Sarin, a potent organophosphate cholinesterase inhibitor, induces an array of toxic effects including convulsions. Many antidotal treatments contain anticonvulsants to block seizure activity and the ensuing brain damage. Magnesium sulfate (MGS) is used to suppress eclamptic seizures in pregnant women with hypertension...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-012-0916-1
更新日期：2013-02-01 00:00:00
abstract：:The effect of acute and subchronic acrylamide treatment on levels of dopamine, serotonin, and their metabolites was determined in several brain regions of the rat. Concentrations of several neuropeptides and circulating hormones were also measured. Both a single and repeated doses of acrylamide resulted in elevated le...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00317980
更新日期：1983-01-01 00:00:00
abstract：:The metabolism of 74As-arsenate (As V, 0.4 mg As/kg body weight, IV) in marmoset monkeys (two males and two females) was studied. Unlike all other animal species studied so far, the marmoset was found to be unable to metabolize the arsenate to dimethylarsinic acid. Most of the absorbed arsenate was reduced to arsenite...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00343121
更新日期：1985-06-01 00:00:00
abstract：:A method is described for the determination of lorazepam plasma levels involving extraction from the sample and analysis of the intact lorazepam by electron capture gas-liquid chromatography. Using mass spectrometry it is demonstrated, that lorazepam shows a thermal rearrangement under gas chromatographic conditions. ...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00293571
更新日期：1976-06-08 00:00:00
abstract：:Our previous study suggested the possibilities that dicyclanil (DC), a nongenotoxic carcinogen, produces oxidative stress in the liver of the two-stage hepatocarcinogenesis model of mice and the stress induced probably causes secondary oxidative DNA damage. However, clear evidences demonstrating the relationship betwe...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-006-0086-0
更新日期：2006-10-01 00:00:00
abstract：:Previous rat toxicity studies of alpha-glycosyl isoquercitrin (AGIQ), a water-soluble flavonol glycoside derived from rutin, revealed systemic yellow bone discoloration. This investigative study was conducted to determine the AGIQ metabolite(s) responsible for the discoloration. Female Sprague-Dawley rats were adminis...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-020-02760-z
更新日期：2020-07-01 00:00:00
abstract：:Forty-eight hours after a single dose of 14C-imipramine to rats, 14C-radioactivity could be measured in the following organs: liver greater than kidney greater than serum greater than fat greater than spleen greater than duodenum greater than lung greater than muscle and brain. Liver microsomes contained the main part...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00353357
更新日期：1976-12-23 00:00:00
abstract：:Platinum coordination complexes (PtCx) are potent against several types of cancer but are often nephrotoxic. With a view to developing a PtCx nephrotoxicity model, the toxicity of cisplatin (cDDP), transplatin (tDDP) and carboplatin (CBDCA) was studied in primary cultures of rabbit proximal tubule (RPT) cells and in t...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF01973705
更新日期：1993-01-01 00:00:00
abstract：:This study examined the effect of tamoxifen, an anti-breast cancer drug, on Ca2+ handling in bladder female transitional cancer cells. Changes in cytosolic free Ca2+ levels were recorded by using the Ca2+-sensitive dye fura-2. In a dose-dependent manner, tamoxifen induced intracellular free Ca2+ concentrations ([Ca2+]...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040100212
更新日期：2001-05-01 00:00:00
abstract：:The consumption of plants containing the diterpenoid atractyloside (ATR) causes selective proximal tubule injury, renal failure and death in humans. We have compared the effects of ATR in freshly isolated renal proximal tubules and glomeruli from rat and also in cell lines: NRK, derived from the proximal tubules, and ...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s002040050362
更新日期：1996-01-01 00:00:00
abstract：:Groups of rats were exposed simultaneously to manganese chloride (3 mg Mn2+/ml water) through drinking water and lead acetate intraperitoneally at dosages of 5.0, 8.0 and 12.0 mgPb2+/kg daily for a period of 14 days. The magnitude of changes in the behavioral pattern, contents of biogenic amines and accumulation of le...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00352071
更新日期：1981-11-01 00:00:00
abstract：:The effects of intravenously (i.v.) administered or inhaled amyl nitrite (AN) were followed under chloralose anaesthesia in intact and cyanide-poisoned, spontaneously breathing beagles. The i.v. doses of AN were 0.03 and 0.15 mmol/kg and the i.v. dose of KCN was 0.06 mmol/kg. AN was inhaled in a closed system at 0.15 ...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00570134
更新日期：1988-01-01 00:00:00
abstract：:The investigation was aimed at providing insight into the side chain metabolism of furazolidone in mice. The agents used in the experiments were furazolidone, 3-amino-2-oxazolidinone, oxazolidinone, nitrofurantoin, 3-aminohydantoin and hydantoin, administered intraperitoneally at five equimolar doses ranging from 0.17...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00661377
更新日期：1987-12-01 00:00:00
abstract：:The activity of 18 vitamin D analogs on soft tissue calcification and growth impairment in neonatal rats and their effect on bone calcium mobilization, intestinal calcium absorption and binding to intestinal 1,25-dihydroxyvitamin D3 receptors in adult rats were compared. Depending on the chemical modification of the v...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00303129
更新日期：1989-01-01 00:00:00
abstract：:Overdose of acetaminophen (APAP) causes necrosis of centrilobular cells of the liver. Accumulating evidence suggests that innate immune system may contribute to APAP-induced hepatotoxicity. Interaction between RANTES and its receptor C-C chemokine receptor (CCR) 5 is related to recruitment of macrophages to sites of i...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-014-1253-3
更新日期：2015-02-01 00:00:00
abstract：:N-methylformamide (NMF) produced dose-dependent zone 3 haemorrhagic necrosis in mice; the threshold dose was 100-200 mg/kg. In rats a dose of 1000 mg/kg caused hepatic damage in some animals and slight elevations of plasma transaminases. A species difference in susceptibility to NMF-induced hepatotoxicity is clearly i...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00570135
更新日期：1988-01-01 00:00:00
abstract：:Although polybrominated naphthalenes (PBNs) are contaminants of the commercial fire retardant fireMaster BP-6, the individual PBN isomers have not been identified. In order to study PBNs possessing an analogous level of bromination to those found in fireMaster BP-6, three synthetic PBN mixtures, averaging 5.0, 5.3, an...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00346051
更新日期：1984-07-01 00:00:00
abstract：:Phenethyl isothiocyanate is a chemopreventive phytochemical present in cruciferous vegetables where it exists as the glucosinolate gluconasturtiin. It is a mechanism-based inhibitor of both rat and human cytochrome P450 enzymes. The principal objective of the present study was to ascertain whether phenethyl isocyanate...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-010-0522-z
更新日期：2010-10-01 00:00:00
abstract：:This discussion of the NEL presents some thoughts how toxicologists could be encouraged to use more sophisticated modern techniques for the study of various environmental chemicals. It is proposed to use the concept of the NEL only for data obtained by conventional techniques in routine toxicity experiments. Informati...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/BF00695868
更新日期：1979-10-01 00:00:00
abstract：:Fulminant hepatitis is a serious inflammatory condition of the liver characterized by massive necrosis of liver parenchyma following excessive immune cell infiltration into the liver, and possibly causing sudden hepatic failure and medical emergency. However, the underlying mechanisms are not fully understood. Here, w...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-019-02633-0
更新日期：2020-02-01 00:00:00
abstract：:Melanin is a polyanionic pigment that colors, e.g., the hair, skin and eyes. The pigment neuromelanin is closely related to melanin and is mainly produced in specific neurons of the substantia nigra. Certain drugs and chemicals bind to melanin/neuromelanin and are retained in pigment cells for long periods. This speci...
journal_title：Archives of toxicology
pub_type： 杂志文章,评审
doi：10.1007/s00204-016-1757-0
更新日期：2016-08-01 00:00:00
abstract：:The object of this study was to compare the relative sensitivity of markers of exposure and effects in the lung of rats exposed to polymeric diphenyl-methane-4,4'-diisocyanate (pMDI) aerosol. Rats were repeatedly exposed to 12.9 mg pMDI/m(3) (6 h/day, 5 days/week for 14 days; exposure was from days 0--17 followed by a...
journal_title：Archives of toxicology
pub_type： 杂志文章
doi：10.1007/s00204-001-0301-y
更新日期：2002-02-01 00:00:00
