title: Intravenous toxicity of fructose-1,6-bisphosphate in rats.
abstract: Fructose-1,6-bisphosphate (FBP) is a bisphosphorilated sugar with a protective action against events that lead to cellular damage. The toxicity of the drug was assessed when administered intravenously in Wistar rats in doses of between 250 and 4000 mg/kg. Ionic calcium, total calcium, inorganic serum phosphate and the electrocardiographic profile of these animals were assessed. The lethal dose (LD(50)) was established by means of PROBIT processing. There was no reduction in the levels of total calcium, with the administration of increased doses of FBP, although there was a significant reduction in the levels of ionic calcium in those groups that received 250 mg/kg and over. The serum phosphate showed a significant statistical increase in those groups that received 750 mg/kg and over. The LD(50) obtained in 24 h was 1068 mg/kg. Though it was not possible to elucidate the toxic mechanism of FBP, the electrocardiogram (ECG) showed that all the rats died of cardiac arrest.
authors.affiliation: Laboratório de Pesquisa em Biofisica, Departamento de Ciências Fisiológicas, Faculdade de Biociências, Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Fernanda Bordignon
authors.initials: FB
authors.lastname: Nunes
authors.forename: Patrick Barcelos
authors.initials: PB
authors.lastname: Gaspareto
authors.forename: Roberto Christ Vianna
authors.initials: RC
authors.lastname: Santos
authors.forename: Márcio
authors.initials: M
authors.lastname: de Assis
authors.forename: Cássio Meyer
authors.initials: CM
authors.lastname: Graziottin
authors.forename: Vanderlei
authors.initials: V
authors.lastname: Biolchi
authors.forename: José Carlos Farias
authors.initials: JC
authors.lastname: Alves Filho
authors.forename: Adroaldo
authors.initials: A
authors.lastname: Lunardelli
authors.forename: Luís D
authors.initials: LD
authors.lastname: Avila
authors.forename: Melissa Guerra Simões
authors.initials: MG
authors.lastname: Pires
authors.forename: Paulo Harald
authors.initials: PH
authors.lastname: Wächter
authors.forename: Jarbas Rodrigues
authors.initials: JR
authors.lastname: De Oliveira
mesh_terms: D000818:Animals; D002118:Calcium / Q000097:blood; D004562:Electrocardiography / Q000187:drug effects; D005635:Fructosediphosphates / Q000008:administration & dosage / Q000633:toxicity*; D007275:Injections, Intravenous; D007928:Lethal Dose 50; D008297:Male; D010710:Phosphates / Q000097:blood; D051381:Rats; D017208:Rats, Wistar
chemical_list: D005635:Fructosediphosphates; D010710:Phosphates; C029063:fructose-1,6-diphosphate; D002118:Calcium