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2014 ; 40
(5
): 1040-6
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Clinical features of schizophrenia with enhanced carbonyl stress
#MMPMID24062594
Miyashita M
; Arai M
; Kobori A
; Ichikawa T
; Toriumi K
; Niizato K
; Oshima K
; Okazaki Y
; Yoshikawa T
; Amano N
; Miyata T
; Itokawa M
Schizophr Bull
2014[Sep]; 40
(5
): 1040-6
PMID24062594
show ga
Accumulating evidence suggests that advanced glycation end products, generated as
a consequence of facilitated carbonyl stress, are implicated in the development
of a variety of diseases. These diseases include neurodegenerative illnesses,
such as Alzheimer disease. Pyridoxamine is one of the 3 forms of vitamin B6, and
it acts by combating carbonyl stress and inhibiting the formation of AGEs.
Depletion of pyridoxamine due to enhanced carbonyl stress eventually leads to a
decrease in the other forms of vitamin B6, namely pyridoxal and pyridoxine. We
previously reported that higher levels of plasma pentosidine, a well-known
biomarker for advanced glycation end products, and decreased serum pyridoxal
levels were found in a subpopulation of schizophrenic patients. However, there is
as yet no clinical characterization of this subset of schizophrenia. In this
study, we found that these patients shared many clinical features with
treatment-resistant schizophrenia. These include a higher proportion of
inpatients, low educational status, longer durations of hospitalization, and
higher doses of antipsychotic medication, compared with patients without carbonyl
stress. Interestingly, psychopathological symptoms showed a tendency towards
negative association with serum vitamin B6 levels. Our results support the idea
that treatment regimes reducing carbonyl stress, such as supplementation of
pyridoxamine, could provide novel therapeutic benefits for this subgroup of
patients.
|Adult
[MESH]
|Antipsychotic Agents/therapeutic use
[MESH]
|Arginine/*analogs & derivatives/blood
[MESH]
|Biomarkers/blood
[MESH]
|Female
[MESH]
|Hospitalization/statistics & numerical data
[MESH]