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@ARTICLE{Kullmann:885479,
author = {Kullmann, Stephanie and Abbas, Zaheer and Machann, Jürgen
and Shah, Nadim J. and Scheffler, Klaus and Birkenfeld,
Andreas L. and Häring, Hans‐Ulrich and Fritsche, Andreas
and Heni, Martin and Preissl, Hubert},
title = {{I}nvestigating obesity‐associated brain inflammation
using quantitative water content mapping},
journal = {Journal of neuroendocrinology},
volume = {32},
number = {12},
issn = {1365-2826},
address = {Oxford [u.a.]},
publisher = {Wiley-Blackwell},
reportid = {FZJ-2020-03862},
pages = {e12907},
year = {2020},
abstract = {There is growing evidence that obesity is associated with
inflammation in the brain, which could contribute to the
pathogenesis of obesity. In humans, it is challenging to
detect brain inflammation in vivo. Recently, quantitative
magnetic resonance imaging (qMRI) has emerged as a tool for
characterising pathophysiological processes in the brain
with reliable and reproducible measures. Proton density
imaging provides quantitative assessment of the brain water
content, which is affected in different pathologies,
including inflammation. We enrolled 115 normal weight,
overweight and obese men and women (body mass index [BMI]
range 20.1‐39.7 kg m‐2, age range 20‐75 years, $60\%$
men) to acquire cerebral water content mapping in vivo using
MRI at 3 Tesla. We investigated potential associations
between brain water content with anthropometric measures of
obesity, body fat distribution and whole‐body metabolism.
No global changes in water content were associated with
obesity. However, higher water content values in the
cerebellum, limbic lobe and sub‐lobular region were
detected in participants with higher BMI, independent of
age. More specifically, the dorsal striatum, hypothalamus,
thalamus, fornix, anterior limb of the internal capsule and
posterior thalamic radiation showed the strongest
relationship with BMI, independent of age. In a subgroup
with available measurements (n = 50), we identified visceral
adipose tissue to be the strongest tested link between
higher water content values and obesity. Individuals with
metabolic syndrome had the highest water content values in
the hypothalamus and the fornix. There is accumulating
evidence that inflammation of the hypothalamus contributed
to obesity‐associated insulin resistance in that area.
Whether brain inflammation is a cause or consequence of
obesity in humans still needs to be investigated using a
longitudinal study design. Using qMRI, we were able to
detect marked water content changes in young and older obese
adults, which is most likely the result of chronic
low‐grade inflammation.},
cin = {INM-4 / INM-11 / JARA-BRAIN},
ddc = {610},
cid = {I:(DE-Juel1)INM-4-20090406 / I:(DE-Juel1)INM-11-20170113 /
I:(DE-Juel1)VDB1046},
pnm = {573 - Neuroimaging (POF3-573)},
pid = {G:(DE-HGF)POF3-573},
typ = {PUB:(DE-HGF)16},
pubmed = {33025697},
UT = {WOS:000575320900001},
doi = {10.1111/jne.12907},
url = {https://juser.fz-juelich.de/record/885479},
}