title: Assessment of efficacy of quercetin-5'-sulfonic acid sodium salt in the treatment of acute chromium poisoning: experimental studies.
abstract: Hexavalent chromium compounds exhibit higher toxicity than its trivalent compounds since chromium ions in the +6 oxidation state easily cross biological membranes. It has recently been proposed that substances reducing chromium ions from the +6 to the less toxic +3 oxidation state can be beneficial in management of acute chromium poisoning. In vitro studies also demonstrated quercetin-5 '-sulfonic acid sodium salt (NaQSA) to reduce chromium ions from the +6 to the +3 oxidation state. The aim of the study was to determine efficacy of NaQSA in treatment of acute poisoning with a hexavalent chromium compound. The experiment was carried out on male and female Wistar rats which were divided into 4 experimental (A,B,C,D) and control (K) groups. All animals received intragastrically a single CrO3 dose equal to its LD50. Thirty minutes after administration of CrO3, NaQSA was administered intragastrically at a dose of 50 mg/kg (group A) and 100 mg/kg (group B). In groups C and D, NaQSA was administered ip 2 h after administration of CrO3 and then twice a day for 4 days at doses of 50 mg/kg (group C) and 100 mg/kg (group D). Only intragastric administration of NaQSA at a dose of 100 mg/kg decreased mortality in acute poisoning with CrO3. In groups B and D, aminotransferase activity was statistically significantly dropping from day 7 of the experiment in comparison with the group K, which indicates lesser damage to the liver in animals treated with NaQSA. Bilirubin concentrations in groups B and D were also much lower than in the group K, but the difference between average bilirubin levels in these groups and the K was not statistically significant. The results of the study suggest the usefulness of NaQSA in the treatment of poisoning with hexavalent chromium compounds.
authors.affiliation: Department of Pharmacology, Medical University of Wrocław, Mikulicza-Radeckiego 2, PL 50-345 Wrocław, Poland.
authors.forename: Adam
authors.initials: A
authors.lastname: Szelag
authors.forename: Jan
authors.initials: J
authors.lastname: Magdalan
authors.forename: Maria
authors.initials: M
authors.lastname: Kopacz
authors.forename: Anna
authors.initials: A
authors.lastname: Kuźniar
authors.forename: Przemysław
authors.initials: P
authors.lastname: Kowalski
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Pieśniewska
mesh_terms: D000208:Acute Disease; D000818:Animals; D000931:Antidotes / Q000627:therapeutic use*; D017608:Chromium Compounds / Q000097:blood / Q000506:poisoning*; D004305:Dose-Response Relationship, Drug; D005260:Female; D066298:In Vitro Techniques; D007274:Injections, Intraperitoneal; D008297:Male; D011041:Poisoning / Q000188:drug therapy / Q000401:mortality / Q000473:pathology; D011794:Quercetin / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000931:Antidotes; D017608:Chromium Compounds; C028801:chromium trioxide; D011794:Quercetin