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2017 ; 7
(1
): 14973
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Iron deposition in substantia nigra: abnormal iron metabolism, neuroinflammatory
mechanism and clinical relevance
#MMPMID29097764
Liu Z
; Shen HC
; Lian TH
; Mao L
; Tang SX
; Sun L
; Huang XY
; Guo P
; Cao CJ
; Yu SY
; Zuo LJ
; Wang XM
; Chen SD
; Chan P
; Zhang W
Sci Rep
2017[Nov]; 7
(1
): 14973
PMID29097764
show ga
Parkinson disease (PD) is associated with multiple factors, including iron, which
is demonstrated to deposit excessively in PD brains. We detected iron deposition
by susceptibility weighted image (SWI) and measured the levels of iron
metabolism-related proteins and inflammatory factors in cerebrospinal fluid (CSF)
and serum of PD patients and control subjects. Clinical symptoms of PD were
evaluated by series of rating scales. Relationships among above factors were
analyzed. Results showed that corrected phase (CP) value of substantia nigra (SN)
was significantly decreased in PD group compared to control group, hence, SN was
the main region with excessive iron deposition. In PD group, ferritin was
significantly elevated in CSF and reduced in serum compared to control group, and
levels of ferritin in CSF and serum were both significantly and positively
correlated with CP value of SN, thus, abnormal iron metabolism in central and
peripheral systems was associated with iron deposition. CP value of SN in PD
group was significantly and negatively correlated with interleukin-1? level in
CSF, so interleukin-1? might be a neuroinflammatory factor produced by excessive
iron in SN. Iron deposition in SN was significantly correlated with motor
symptoms and part of non-motor symptoms of PD.