title: [Myelotoxicity of high-molecular-weight poly(ethylene oxide)].
abstract: The effects of administration of the parent substance of high-molecular-weight poly(ethylene oxide) (HMWPEO) with a molecular mass of 3-6 x 10(6) D and the related drug polyetox (representing a water-soluble lyophilized form of HMWPEO suitable for intravenous injection) on the characteristics of peripheral blood and bone marrow were studied in rats. HMWPEO was injected intravenously and intraperitoneally in a single toxic dose. Polyetox was injected intraperitoneally in a therapeutic dose and in 3- and 10-fold doses over a period of 30 days. Single i.v. and i.p. injections of HMWPEO in the maximum tolerable dose leads to a dose-dependent reversible hemolytic anemia of medium degree, neutrophilic leukocytosis, lymphopenia, and thrombocytopenia. The chronic i.p. adminstration of polyetox in a 10-fold therapeutic dose caused red blood cell lysis and led to the development of reversible regenerative anemia.
authors.forename: G V
authors.initials: GV
authors.lastname: Karpova
authors.forename: E V
authors.initials: EV
authors.lastname: Abramova
authors.forename: T Iu
authors.initials: TIu
authors.lastname: Lamzina
authors.forename: E A
authors.initials: EA
authors.lastname: Timina
authors.forename: T V
authors.initials: TV
authors.lastname: Vetoshkina
mesh_terms: D000743:Anemia, Hemolytic / Q000139:chemically induced*; D000818:Animals; D001853:Bone Marrow / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D006402:Hematologic Diseases / Q000139:chemically induced*; D007274:Injections, Intraperitoneal; D007275:Injections, Intravenous; D008297:Male; D011092:Polyethylene Glycols / Q000633:toxicity*; D051381:Rats
chemical_list: D011092:Polyethylene Glycols