title: Three-dimensional elemental bio-imaging of Fe, Zn, Cu, Mn and P in a 6-hydroxydopamine lesioned mouse brain.
abstract: Three dimensional maps of iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) and phosphorous (P) in a 6-hydroxydopamine (6-OHDA) lesioned mouse brain were constructed employing a novel quantitative laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) imaging method known as elemental bio-imaging. The 3D maps were produced by ablating serial consecutive sections taken from the same animal. Each section was quantified against tissue standards resulting in a three dimensional map that represents the variation of trace element concentrations of the mouse brain in the area surrounding the substantia nigra (SN). Damage caused by the needle or the toxin did not alter the distribution of Zn, and Cu but significantly altered Fe in and around the SN and both Mn and Fe around the needle track. A 20% increase in nigral Fe concentration was observed within the lesioned hemisphere. This technique clearly shows the natural heterogeneous distributions of these elements throughout the brain and the perturbations that occur following trauma or intoxication. The method may applied to three-dimensional modelling of trace elements in a wide range of tissue samples.
authors.affiliation: Elemental Bio-imaging Facility, University of Technology Sydney, Australia.
authors.forename: Dominic J
authors.initials: DJ
authors.lastname: Hare
authors.forename: Jessica L
authors.initials: JL
authors.lastname: George
authors.forename: Rudolph
authors.initials: R
authors.lastname: Grimm
authors.forename: Simon
authors.initials: S
authors.lastname: Wilkins
authors.forename: Paul A
authors.initials: PA
authors.lastname: Adlard
authors.forename: Robert A
authors.initials: RA
authors.lastname: Cherny
authors.forename: Ashley I
authors.initials: AI
authors.lastname: Bush
authors.forename: David I
authors.initials: DI
authors.lastname: Finkelstein
authors.forename: Philip
authors.initials: P
authors.lastname: Doble
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D003300:Copper / Q000032:analysis*; D006892:Hydroxydopamines / Q000737:chemistry*; D021621:Imaging, Three-Dimensional; D007501:Iron / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods; D051379:Mice; D008954:Models, Biological; D010758:Phosphorus / Q000032:analysis*; D015032:Zinc / Q000032:analysis*
chemical_list: D006892:Hydroxydopamines; D010758:Phosphorus; D008345:Manganese; D003300:Copper; D007501:Iron; D015032:Zinc