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2016 ; 184
(3
): 318-22
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NETosis-associated serum biomarkers are reduced in type 1 diabetes in association
with neutrophil count
#MMPMID26939803
Qin J
; Fu S
; Speake C
; Greenbaum CJ
; Odegard JM
Clin Exp Immunol
2016[Jun]; 184
(3
): 318-22
PMID26939803
show ga
As the immune pathways involved in the pathogenesis of type 1 diabetes (T1D) are
not fully understood, biomarkers implicating novel mechanisms of disease are of
great interest and call for independent evaluation. Recently, it was reported
that individuals with T1D display dramatic elevations in circulating components
of neutrophil extracellular traps (NETs), indicating a potential role for NETosis
in T1D. Our aim was to evaluate further the potential of NET-associated proteins
as novel circulating biomarkers in T1D. We tested serum from subjects with T1D
(n?=?44) with a median age of 26·5 years and a median duration of 2·2 years,
along with 38 age-matched controls. T1D subjects did not show elevations in
either neutrophil elastase (NE) or proteinase 3 (PR3), as reported previously. In
fact, both NE and PR3 levels were reduced significantly in T1D subjects,
particularly in subjects within 3 years of diagnosis, consistent with the known
reduction in neutrophil counts in recent-onset T1D. Indeed, levels of both NE and
PR3 correlated with absolute neutrophil counts. Therefore, while not ruling out
potential local or transient spikes in NETosis activity, the levels of these
serum markers do not support a role for systemically elevated NETosis in the T1D
population we studied. Rather, a modest reduction in these markers may reflect
other important aspects of disease activity associated with reduced neutrophil
numbers.
|Adult
[MESH]
|Age of Onset
[MESH]
|Biomarkers/blood
[MESH]
|Case-Control Studies
[MESH]
|Diabetes Mellitus, Type 1/*blood/*diagnosis/genetics/immunology
[MESH]