Nitrosonisoldipine is a selective inhibitor of inflammatory caspases and protects against pyroptosis and related septic shock

Author(s):  
Qianyue Chen ◽  
Jiashuo Zheng ◽  
Dingyu Wang ◽  
Qiyao Liu ◽  
Lulu Kang ◽  
...  
2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Larissa M. N. Pereira ◽  
Patrícia A. Assis ◽  
Natalia M. de Araújo ◽  
Danielle F. Durso ◽  
Caroline Junqueira ◽  
...  

Abstract Earlier studies indicate that either the canonical or non-canonical pathways of inflammasome activation have a limited role on malaria pathogenesis. Here, we report that caspase-8 is a central mediator of systemic inflammation, septic shock in the Plasmodium chabaudi-infected mice and the P. berghei-induced experimental cerebral malaria (ECM). Importantly, our results indicate that the combined deficiencies of caspases-8/1/11 or caspase-8/gasdermin-D (GSDM-D) renders mice impaired to produce both TNFα and IL-1β and highly resistant to lethality in these models, disclosing a complementary, but independent role of caspase-8 and caspases-1/11/GSDM-D in the pathogenesis of malaria. Further, we find that monocytes from malaria patients express active caspases-1, -4 and -8 suggesting that these inflammatory caspases may also play a role in the pathogenesis of human disease.


2006 ◽  
Vol 36 (19) ◽  
pp. 24
Author(s):  
BRUCE JANCIN
Keyword(s):  

2013 ◽  
Vol 225 (03) ◽  
Author(s):  
J Ecker ◽  
I Oehme ◽  
A Schomburg ◽  
R Mazitschek ◽  
A Korshunov ◽  
...  

Author(s):  
M Algaba Montes ◽  
AÁ Oviedo García ◽  
M Patricio Bordomás

1994 ◽  
Vol 71 (06) ◽  
pp. 768-772 ◽  
Author(s):  
Gerhard Dickneite ◽  
Jörg Czech

SummaryRats which were infected with the gramnegative pathogen Klebsiella pneumoniae develop disseminated intravascular coagulation (DIC), multi-organ failure (MOF) and finally die in a septic shock. We investigated the therapeutic effect of antibiotic (tobramycin) treatment combined with the infusion of the highly specific thrombin inhibitor rec. hirudin. Although administration of 2 mg/kg tobramycin alone leads to a decrease of the bacterial burden, DIC could not be prevented. Infusion of rec. hirudin (0.25 mg/kg x h) for 4 h (start of treatment 1 h post infection), in addition to a bolus administration of tobramycin, led to an amelioration of DIC parameters as fibrinogen, thrombin-antithrombin complex (TAT) and platelets. Serum transaminase levels (GOT, GPT) as a marker of MOF were significantly improved by rec. hirudin, the T50 value increased from 17 h in the tobramycin group to 42 h in the tobramycin + rec. hirudin giuup, muilality rates were 90% or 60%, respectively. Combination of heparin (10011/kg x h) and tobramycin was not effective on survival.


1983 ◽  
Vol 49 (02) ◽  
pp. 096-101 ◽  
Author(s):  
V C Menys ◽  
J A Davies

SummaryPlatelet adhesion to rabbit aortic subendothelium or collagen-coated glass was quantitated in a rotating probe device by uptake of radio-labelled platelets. Under conditions in which aspirin had no effect, dazoxiben, a selective inhibitor of thromboxane synthetase, reduced platelet adhesion to aortic subendothelium by about 40% but did not affect adhesion to collagen-coated glass. Pre-treatment of aortic segments with 15-HPETE, a selective inhibitor of PGI2-synthetase, abolished the inhibitory effect of dazoxiben on adhesion. Concentrations of 6-oxo-PGFlα in the perfusate were raised in the presence of dazoxiben alone, and following addition of thrombin (10 units/ml) there was a 2-3 fold increase in concentration. Perfusion of damaged aorta with platelets labelled with (14C)-arachidonic acid in the presence of thrombin and dazoxiben resulted in the appearance of (14C)-labelled-6-oxo-PGFiα. Inhibition of thromboxane synthetase limits platelet adhesion probably by promoting vascular synthesis of PGI2 from endoperoxides liberated from adherent platelets, which subsequently promotes detachment of cells from the surface.


2004 ◽  
Vol 112 (S 1) ◽  
Author(s):  
MWA Angstwurm ◽  
A Rashidi-Kia ◽  
M Bidlingmeier ◽  
J Schopohl ◽  
R Gaertner

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