Increasing the accumulation of aluminum in the bone (body) in cases of
renal osteodystrophy may influence the histopathologic aspect of the
bones. Alumi- num blunts the effect of increased PTH secretion and
favours the genesis of osteoid. That means, in cases of renal failure
combined with aluminum accumulation, a relatively low bone tunover is
found and no fibrosis of the bone marrow. Furthermore the amount of
osteoid is increased. This means that there is evidence of osteomalacia
especially when the latter is defined as an increased amount of osteoid
covered with a relatively low number of cubic osteoblasts. To a certain
extent the effect of aluminum accumulation is comparable to the effect
of PTX. Treatment with DFO may normalize the bone, although not
necessarily with a concomittant disappearance of alumi- num from the
bone. The presence of aluminum in the bone can be suggested by routine
histologic investigation of the bone and can be made rather probably by
the aluminum staining combined with iron-staining, but can only be
proven by more advanced techniques like ET AAS and LAMMA. References 1.
Boyce BF, Elder HY, Elliot HL, Fogelman I, Gell GS, lunor Bl, Beastall
G, Boyle YT, 1982: Hypercaicaemic ostemalacia due to aluminium toxicity.
Lancet 6: 1009. 2. Verbueken AH, Visser Wl, Van de Vyver FL, Van Grieken
RE, De Broe ME, 1986: The use of laser microprobe mass analysis (LAMMA)
to control the staining of aluminum by aurin tricarboxylate (aluminon).
Stain Technology 61: 287.