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@ARTICLE{Hermann:163434,
author = {Hermann, Peter and Villar-Piqué, Anna and Schmitz,
Matthias and Schmidt, Christian and Varges, Daniela and
Goebel, Stefan and Bunck, Timothy and Lindemann, Hanna and
Bogner, Carla and Santana, Isabel and Baldeiras, Inês and
Riggert, Joachim and Zerr, Inga and Llorens Torres, Francesc
Josep},
title = {{P}lasma {L}ipocalin 2 in {A}lzheimer's disease: potential
utility in the differential diagnosis and relationship with
other biomarkers.},
journal = {Alzheimer's research $\&$ therapy},
volume = {14},
number = {1},
issn = {1758-9193},
address = {London},
publisher = {BioMed Central},
reportid = {DZNE-2022-00194},
pages = {9},
year = {2022},
abstract = {Lipocalin-2 is a glycoprotein that is involved in various
physiological and pathophysiological processes. In the
brain, it is expressed in response to vascular and other
brain injury, as well as in Alzheimer's disease in reactive
microglia and astrocytes. Plasma Lipocalin-2 has been
proposed as a biomarker for Alzheimer's disease but
available data is scarce and inconsistent. Thus, we
evaluated plasma Lipocalin-2 in the context of Alzheimer's
disease, differential diagnoses, other biomarkers, and
clinical data.For this two-center case-control study, we
analyzed Lipocalin-2 concentrations in plasma samples from a
cohort of n = 407 individuals. The diagnostic groups
comprised Alzheimer's disease (n = 74), vascular dementia (n
= 28), other important differential diagnoses (n = 221), and
healthy controls (n = 84). Main results were validated in an
independent cohort with patients with Alzheimer's disease (n
= 19), mild cognitive impairment (n = 27), and healthy
individuals (n = 28).Plasma Lipocalin-2 was significantly
lower in Alzheimer's disease compared to healthy controls (p
< 0.001) and all other groups (p < 0.01) except for mixed
dementia (vascular and Alzheimer's pathologic changes).
Areas under the curve from receiver operation
characteristics for the discrimination of Alzheimer's
disease and healthy controls were 0.783 $(95\%CI:$
0.712-0.855) in the study cohort and 0.766 $(95\%CI:$
0.627-0.905) in the validation cohort. The area under the
curve for Alzheimer's disease versus vascular dementia was
0.778 $(95\%CI:$ 0.667-0.890) in the study cohort. In
Alzheimer's disease patients, plasma Lipocalin2 did not show
significant correlation with cerebrospinal fluid biomarkers
of neurodegeneration and AD-related pathology (total-tau,
phosphorylated tau protein, and beta-amyloid 1-42),
cognitive status (Mini Mental Status Examination scores),
APOE genotype, or presence of white matter hyperintensities.
Interestingly, Lipocalin 2 was lower in patients with rapid
disease course compared to patients with non-rapidly
progressive Alzheimer's disease (p = 0.013).Plasma
Lipocalin-2 has potential as a diagnostic biomarker for
Alzheimer's disease and seems to be independent from
currently employed biomarkers.},
keywords = {Alzheimer Disease: blood / Alzheimer Disease: cerebrospinal
fluid / Alzheimer Disease: diagnosis / Amyloid
beta-Peptides: blood / Amyloid beta-Peptides: cerebrospinal
fluid / Biomarkers: blood / Biomarkers: cerebrospinal fluid
/ Case-Control Studies / Cognitive Dysfunction: diagnosis /
Diagnosis, Differential / Humans / Lipocalin-2: blood / tau
Proteins / Alzheimer’s disease (Other) / Biomarker (Other)
/ Dementia (Other) / Lipocalin 2 (Other) / Neutrophil
gelatinase-associated Lipocalin (Other) / Plasma (Other) /
Amyloid beta-Peptides (NLM Chemicals) / Biomarkers (NLM
Chemicals) / Lipocalin-2 (NLM Chemicals) / tau Proteins (NLM
Chemicals)},
cin = {AG Zerr / Ext UMG Zerr},
ddc = {610},
cid = {I:(DE-2719)1440011-1 / I:(DE-2719)5000037},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35027079},
pmc = {pmc:PMC8759265},
doi = {10.1186/s13195-021-00955-9},
url = {https://pub.dzne.de/record/163434},
}