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@ARTICLE{Rott:180823,
author = {J. Rott and E. T. Toepfer and M. Bartosova and A. Kolevica
and A. Heuser and M. Rabe and G. Behets and P. C. D'Haese
and V. Eichwald$^*$ and M. Jugold$^*$ and I. Damgov and S.
G. Zarogiannis and R. Shroff and A. Eisenhauer and C. P.
Schmitt},
title = {{N}utritional {C}alcium {S}upply {D}ependent {C}alcium
{B}alance, {B}one {C}alcification and {C}alcium {I}sotope
{R}atios in {R}ats.},
journal = {International journal of molecular sciences},
volume = {23},
number = {14},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {DKFZ-2022-01579},
pages = {7796},
year = {2022},
note = {2022 Jul 14;23(14):7796},
abstract = {Serum calcium isotopes (δ44/42Ca) have been suggested as a
non-invasive and sensitive Ca balance marker. Quantitative
δ44/42Ca changes associated with Ca flux across body
compartment barriers relative to the dietary Ca and the
correlation of δ44/42CaSerum with bone histology are
unknown. We analyzed Ca and δ44/42Ca by mass-spectrometry
in rats after two weeks of standard-Ca-diet $(0.5\%)$ and
after four subsequent weeks of standard- and of low-Ca-diet
$(0.25\%).$ In animals on a low-Ca-diet net Ca gain was 61
± $3\%$ and femur Ca content 68 ± $41\%$ of
standard-Ca-diet, bone mineralized area per section area was
68 ± $15\%$ compared to standard-Ca-diet. δ44/42Ca was
similar in the diets, and decreased in feces and urine and
increased in serum in animals on low-Ca-diet. δ44/42CaBone
was higher in animals on low-Ca-diet, lower in the diaphysis
than the metaphysis and epiphysis, and unaffected by gender.
Independent of diet, δ44/42CaBone was similar in the femora
and ribs. At the time of sacrifice, δ44/42CaSerum inversely
correlated with intestinal Ca uptake and histological bone
mineralization markers, but not with Ca content and bone
mineral density by µCT. In conclusion, δ44/42CaBone was
bone site specific, but mechanical stress and gender
independent. Low-Ca-diet induced marked changes in feces,
serum and urine δ44/42Ca in growing rats. δ44/42CaSerum
inversely correlated with markers of bone mineralization.},
keywords = {bone mineralization (Other) / calcium (Other) / calcium
deficiency (Other) / fractionation (Other) / isotope
(Other)},
cin = {W240},
ddc = {540},
cid = {I:(DE-He78)W240-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35887143},
doi = {10.3390/ijms23147796},
url = {https://inrepo02.dkfz.de/record/180823},
}