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2016 ; 6
(8
): 1244-60
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Mitochondrial Transplantation Attenuates Airway Hyperresponsiveness by Inhibition
of Cholinergic Hyperactivity
#MMPMID27279915
Su Y
; Zhu L
; Yu X
; Cai L
; Lu Y
; Zhang J
; Li T
; Li J
; Xia J
; Xu F
; Hu Q
Theranostics
2016[]; 6
(8
): 1244-60
PMID27279915
show ga
Increased cholinergic activity has been highlighted in the pathogenesis of airway
hyperresponsiveness, and alternations of mitochondrial structure and function
appear to be involved in many lung diseases including airway hyperresponsiveness.
It is crucial to clarify the cause-effect association between mitochondrial
dysfunction and cholinergic hyperactivity in the pathogenesis of airway
hyperresponsiveness. Male SD rats and cultured airway epithelial cells were
exposed to cigarette smoke plus lipopolysaccharide administration; mitochondria
isolated from airway epithelium were delivered into epithelial cells in vitro and
in vivo. Both the cigarette smoke plus lipopolysaccharide-induced cholinergic
hyperactivity in vitro and the airway hyperresponsiveness to acetylcholine in
vivo were reversed by the transplantation of exogenous mitochondria. The rescue
effects of exogenous mitochondria were imitated by the elimination of excessive
reactive oxygen species or blockage of muscarinic M3 receptor, but inhibited by M
receptor enhancer. Mitochondrial transplantation effectively attenuates cigarette
smoke plus lipopolysaccharide-stimulated airway hyperresponsiveness through the
inhibition of ROS-enhanced epithelial cholinergic hyperactivity.