scholarly journals Salvinorin A preserves cerebral pial artery autoregulation after forebrain ischemia via the PI3K/AKT/cGMP pathway

Author(s):  
H.P. Dong ◽  
W. Zhou ◽  
X.X. Ma ◽  
Z.Z. He ◽  
Z.H. Wang
Author(s):  
R.V.W. Dimlich ◽  
M.H. Biros

Although a previous study in this laboratory determined that Purkinje cells of the rat cerebellum did not appear to be damaged following 30 min of forebrain ischemia followed by 30 min of reperfusion, it was suggested that an increase in rough endoplasmic reticulum (RER) and/or polysomes had occurred in these cells. The primary objective of the present study was to morphometrically determine whether or not this increase had occurred. In addition, since there is substantial evidence that glial cells may be affected by ischemia earlier than other cell types, glial cells also were examined. To ascertain possible effects on other cerebellar components, granule cells and neuropil near Purkinje cells as well as neuropil in the molecular layer also were evaluated in this investigation.


Planta Medica ◽  
2015 ◽  
Vol 81 (05) ◽  
Author(s):  
PR Polepally ◽  
A Keasling ◽  
K White ◽  
E Vardy ◽  
BL Roth ◽  
...  

Diabetes ◽  
1992 ◽  
Vol 41 (10) ◽  
pp. 1328-1334 ◽  
Author(s):  
G. R. Sutherland ◽  
J. Peeling ◽  
E. Sutherland ◽  
R. Tyson ◽  
F. Dai ◽  
...  

2017 ◽  
Author(s):  
Jeremy Roach ◽  
Yusuke Sasano ◽  
Cullen Schmid ◽  
Saheem Zaidi ◽  
Vsevolod Katritch ◽  
...  

Salvinorin A (SalA) is a plant metabolite that agonizes the human <i>kappa</i>-opioid receptor (κ-OR) with high affinity and high selectivity over <i>mu- </i>and <i>delta-</i>opioid receptors. Its therapeutic potential has stimulated extensive semi-synthetic studies and total synthesis campaigns. However, structural modification of SalA has been complicated by its instability, and efficient total synthesis has been frustrated by its dense, complex architecture. Treatment of strategic bonds in SalA as dynamic and dependent on structural perturbation enabled the identification of an efficient retrosynthetic pathway. Here we show that deletion of C20 simultaneously stabilizes the SalA skeleton, simplifies its synthesis and retains its high affinity and selectivity for the κ-OR. The resulting 10-step synthesis now opens the SalA scaffold to deep-seated property modification.


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