title: Aluminum (26AI) metabolism in rats.
abstract: Because of the lack of a suitable isotope and a sensitive technique of analysis, aluminum has been studied indirectly using analogs such as 67Ga (t1/2 = 78 hr). Recently, with the development of accelerator mass spectrometry (AMS), it has become possible to use the artificially produced radionuclide of aluminum, aluminum 26 (26AI), (t1/2 = 7.16 x 10(5) years). AMS is used for measuring long-lived and stable isotopes with the sensitivity of an attomole (10(-17) mol). To study aluminum metabolism, 26AlCl3 was administered to rats intraperitoneally (ip) by injection and orally by gavage (n = 3/group). Blood was collected periodically. On Day 8 following perfusion, blood, liver, kidney, femur, brain, and spleen were collected and analyzed for 26AI. Of all the tissues studied, 26AI accumulation was greatest in the bone. 26AI accumulated in tissues as: bone > spleen > kidney approximately liver > brain, but absorption was low (0.97% of dose). AMS offers great potential in AI research as it is the only technique available for tracer aluminum study.
authors.affiliation: Department of Foods and Nutrition, Purdue University, West Lafayette, Indiana 47907-1264, USA.
authors.forename: T A
authors.initials: TA
authors.lastname: Zafar
authors.forename: C M
authors.initials: CM
authors.lastname: Weaver
authors.forename: B R
authors.initials: BR
authors.lastname: Martin
authors.forename: R
authors.initials: R
authors.lastname: Flarend
authors.forename: D
authors.initials: D
authors.lastname: Elmore
mesh_terms: D000042:Absorption; D000535:Aluminum / Q000493:pharmacokinetics*; D000818:Animals; D008297:Male; D013058:Mass Spectrometry; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D000535:Aluminum