scholarly journals Nitration of protein kinase G-Iα modulates cyclic nucleotide crosstalk via phosphodiesterase 3A: implications for acute lung injury

2021 ◽  
pp. 100946
Author(s):  
Evgeny A. Zemskov ◽  
Xiaomin Wu ◽  
Saurabh Aggarwal ◽  
Mannivannan Yegambaram ◽  
Christine Gross ◽  
...  
1997 ◽  
Vol 44 (2) ◽  
pp. 349
Author(s):  
Yong Hoon Kim ◽  
Seung Hyug Moon ◽  
Hyeon Tae Kim ◽  
Sin Young Kee ◽  
Jae Hak Ju ◽  
...  

Shock ◽  
2019 ◽  
Vol 52 (5) ◽  
pp. 540-549 ◽  
Author(s):  
Laura Kitzmiller ◽  
John R. Ledford ◽  
Paul W. Hake ◽  
Michael O’Connor ◽  
Giovanna Piraino ◽  
...  

2021 ◽  
Vol 12 ◽  
Author(s):  
Xiyue Zhang ◽  
Li Du ◽  
Jinrong Zhang ◽  
Chunyan Li ◽  
Jie Zhang ◽  
...  

Acute lung injury (ALI) is a respiratory disease that leads to death in severe cases. Hordenine (Hor), a barley-derived natural product, has various biological activities, including anti-inflammatory, and anti-oxidation activities. We investigated the effect of Hor on lipopolysaccharide-induced ALI and its potential mechanism. The anti-inflammatory effects of Hor were detected using in vivo and in vitro models by enzyme-linked immunosorbent assay, real-time polymerase chain reaction, western blotting, and molecular docking simulations. Hor inhibited increases in the levels of inflammatory factors both in vivo and in vitro, and its anti-inflammatory effect inhibited activation of protein kinase B, nuclear factor-κB, and mitogen-activated protein kinase signaling. Hor alleviated lipopolysaccharide-induced ALI by inhibiting inflammatory cytokine increases in vivo and in vitro and shows potential for preventing inflammatory disease.


Life Sciences ◽  
2020 ◽  
Vol 246 ◽  
pp. 117415 ◽  
Author(s):  
Ruiting Li ◽  
You Shang ◽  
Yuan Yu ◽  
Ting Zhou ◽  
Wei Xiong ◽  
...  

2015 ◽  
Vol 290 (34) ◽  
pp. 20880-20892 ◽  
Author(s):  
Hongwei Ma ◽  
Michael R. Butler ◽  
Arjun Thapa ◽  
Josh Belcher ◽  
Fan Yang ◽  
...  

Photoreceptor cyclic nucleotide-gated (CNG) channels play a pivotal role in phototransduction. Mutations in the cone CNG channel subunits CNGA3 and CNGB3 are associated with achromatopsia and cone dystrophies. We have shown endoplasmic reticulum (ER) stress-associated apoptotic cone death and increased phosphorylation of the ER Ca2+ channel inositol 1,4,5-trisphosphate receptor 1 (IP3R1) in CNG channel-deficient mice. We also presented a remarkable elevation of cGMP and an increased activity of the cGMP-dependent protein kinase (protein kinase G, PKG) in CNG channel deficiency. This work investigated whether cGMP/PKG signaling regulates ER stress and IP3R1 phosphorylation in CNG channel-deficient cones. Treatment with PKG inhibitor and deletion of guanylate cyclase-1 (GC1), the enzyme producing cGMP in cones, were used to suppress cGMP/PKG signaling in cone-dominant Cnga3−/−/Nrl−/− mice. We found that treatment with PKG inhibitor or deletion of GC1 effectively reduced apoptotic cone death, increased expression levels of cone proteins, and decreased activation of Müller glial cells. Furthermore, we observed significantly increased phosphorylation of IP3R1 and reduced ER stress. Our findings demonstrate a role of cGMP/PKG signaling in ER stress and ER Ca2+ channel regulation and provide insights into the mechanism of cone degeneration in CNG channel deficiency.


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