Theophylline antagonizes flurazepam-induced depression of cerebral cortical neurons

1979 ◽  
Vol 57 (8) ◽  
pp. 917-920 ◽  
Author(s):  
J. W. Phillis ◽  
J. P. Edstrom ◽  
S. W. Ellis ◽  
J. R. Kirkpatrick

Intravenously administered theophylline (50–100 mg/kg) antagonized the depressant actions of adenosine and flurazepam on rat cerebral cortical neurons. When assessed in conjunction with recent reports that theophylline competes with diazepam for binding sites in brain tissue, this finding suggests that one action of the benzodiazepines may be exerted at a purinergic receptor associated with central neurons.

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Ying Zhang ◽  
Xinling Jia ◽  
Jian Yang ◽  
Qing Li ◽  
Guofeng Yan ◽  
...  

The mechanisms by which Shaoyao-Gancao decoction (SGD) inhibits the production of inflammatory cytokines in serum and brain tissue after cerebral ischemia-reperfusion (CI-RP) in rats were investigated. A right middle cerebral artery occlusion was used to induce CI-RP after which the rats were divided into model (n=39), SGD (n=28), clopidogrel (n=25) and sham operated (n=34) groups. The Bederson scale was used to evaluate changes in behavioral indices. The levels of IL-1β, TNF-α, MCP-1, IL-10, RANTES, VEGF, and TGF-β1 in the serum and infarcted brain tissues were measured. Nissl body and immunohistochemical staining methods were used to detect biochemical changes in neurons, microglial cells, and astrocytes. Serum levels of VEGF, TNF-α, MCP-1, IL-1β, and IL-10 increased significantly 24 h after CI-RP. In brain tissue, levels of TNF-αand IL-1βsignificantly increased 24 h after CI-RP, whereas levels of TGF-β1 and MCP-1 were significantly higher 96 h after CI-RP (P<0.05). SGD or clopidogrel after CI-RP reduced TNF-αand IL-1βlevels in brain tissue and serum levels of MCP-1, IL-1β, and IL-10. SGD increased the number of NeuN-positive cells in infarcted brain tissue and reduced the number of IBA1-positive and GFAP-positive cells. The efficacy of SGD was significantly higher than that of clopidogrel.


1979 ◽  
Vol 57 (4) ◽  
pp. 432-435 ◽  
Author(s):  
J. W. Phillis

Intravenously or iontophoretically applied diazepam potentiated the depressant action of iontophoretically applied 5′-AMP on the spontaneous firing of rat cerebral cortical neurons. This potentiation of purinergic depression may be a result of the previously reported inhibition by diazepam of uptake of adenosine into brain tissues.


2013 ◽  
Vol 386 (1-2) ◽  
pp. 251-258 ◽  
Author(s):  
Le Yang ◽  
Zhi-ming Yang ◽  
Nan Zhang ◽  
Zhen Tian ◽  
Shui-bing Liu ◽  
...  

1989 ◽  
Vol 169 (2-3) ◽  
pp. 325-328 ◽  
Author(s):  
Gerhard Gross ◽  
Gertraud Hanft ◽  
Hubertus M. Mehdorn

2014 ◽  
Vol 10 (4) ◽  
pp. 1942-1948 ◽  
Author(s):  
XUE-WEN LIU ◽  
EN-FEI JI ◽  
PENG HE ◽  
RUI-XIAN XING ◽  
BU-XIAN TIAN ◽  
...  

2012 ◽  
Vol 33 (2) ◽  
pp. 353-360 ◽  
Author(s):  
Mary Latha Rathinam ◽  
Lora Talley Watts ◽  
Madhusudhanan Narasimhan ◽  
Amanjot Kaur Riar ◽  
Lenin Mahimainathan ◽  
...  

1992 ◽  
Vol 135 (2) ◽  
pp. 255-258 ◽  
Author(s):  
Yoichiro Kuroda ◽  
Masumi Ichikawa ◽  
Kazuyo Muramoto ◽  
Kazuo Kobayashi ◽  
Yuzuru Matsuda ◽  
...  

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