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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Physiol+Cell+Physiol
2014 ; 307
(11
): C1058-67
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gab.com Text
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Neuroprotectin/protectin D1: endogenous biosynthesis and actions on diabetic
macrophages in promoting wound healing and innervation impaired by diabetes
#MMPMID25273880
Hong S
; Tian H
; Lu Y
; Laborde JM
; Muhale FA
; Wang Q
; Alapure BV
; Serhan CN
; Bazan NG
Am J Physiol Cell Physiol
2014[Dec]; 307
(11
): C1058-67
PMID25273880
show ga
Dysfunction of macrophages (M?s) in diabetic wounds impairs the healing. M?s
produce anti-inflammatory and pro-resolving neuroprotectin/protectin D1
(NPD1/PD1, 10R,17S-dihydroxy-docosa-4Z,7Z,11E,13E,15Z,19Z-hexaenoic acid);
however, little is known about endogenous NPD1 biosynthesis by M?s and the
actions of NPD1 on diabetic M? functions in diabetic wound healing. We used an
excisional skin wound model of diabetic mice, M? depletion, M?s isolated from
diabetic mice, and mass spectrometry-based targeted lipidomics to study the time
course progression of NPD1 levels in wounds, the roles of M?s in NPD1
biosynthesis, and NPD1 action on diabetic M? inflammatory activities. We also
investigated the healing, innervation, chronic inflammation, and oxidative stress
in diabetic wounds treated with NPD1 or NPD1-modulated M?s from diabetic mice.
Injury induced endogenous NPD1 biosynthesis in wounds, but diabetes impeded NPD1
formation. NPD1 was mainly produced by M?s. NPD1 enhanced wound healing and
innervation in diabetic mice and promoted M?s functions that accelerated these
processes. The underlying mechanisms for these actions of NPD1 or NPD1-modulated
M?s involved 1) attenuating M? inflammatory activities and chronic inflammation
and oxidative stress after acute inflammation in diabetic wound, and 2)
increasing M? production of IL10 and hepatocyte growth factor. Taken together,
NPD1 appears to be a M?s-produced factor that accelerates diabetic wound healing
and promotes M? pro-healing functions in diabetic wounds. Decreased NPD1
production in diabetic wound is associated with impaired healing. This study
identifies a new molecular target that might be useful in development of more
effective therapeutics based on NPD1 and syngeneic diabetic M?s for treatment of
diabetic wounds.