Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology
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Cell. Physiol. Biochem. · Jan 2017
Neutrophils Kill Reactive Oxygen Species-Resistant Pseudomonas aeruginosa by Sphingosine.
Cystic fibrosis (CF) is dominated by chronic inflammation and infection of the lung resulting in lung destruction and early death of patients. The lungs of CF patients are characterized by a massive accumulation of neutrophils. It requires definition why these massive numbers of neutrophils fail to eliminate typical CF pathogens like Staphylococcus aureus and Pseudomonas aeruginosa (P. aeruginosa) in CF lungs. ⋯ The data provide evidence for a new paradigm explaining how neutrophils kill ROS-resistant P. aeruginosa, i.e. by sphingosine that kills P. aeruginosa at low concentrations. This mechanism is defective in CF neutrophils.
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Cell. Physiol. Biochem. · Jan 2017
Salidroside Attenuates Ventilation Induced Lung Injury via SIRT1-Dependent Inhibition of NLRP3 Inflammasome.
Salidroside (SDS) is the main effective ingredient of Rhodiola rosea L with a variety of pharmacologic properties. We aim to investigate the effects of SDS on ventilation induced lung injury (VILI) and explore the possible underlying molecular mechanism. ⋯ Taken together, these findings indicate that SDS may confer protection against ventilation induced lung injury via SIRT1-de-pendent inhibition of NLRP3 inflammasome activation.
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Cell. Physiol. Biochem. · Jan 2017
Mitochondria-Targeted Antioxidant Mito-Tempo Protects Against Aldosterone-Induced Renal Injury In Vivo.
Growing evidence suggests mitochondrial dysfunction (MtD) and the Nlrp3 inflammasome play critical roles in chronic kidney disease (CKD) progression. We previously reported that Aldosterone (Aldo)-induced renal injury in vitro is directly caused by mitochondrial reactive oxygen species (mtROS)-mediated activation of the Nlrp3 inflammasome. Here we aimed to determine whether a mitochondria-targeted antioxidant (Mito-Tempo) could prevent Aldo-induced kidney damage in vivo. ⋯ Mitochondria-targeted antioxidants may attenuate Aldo-infused renal injury by inhibiting MtD, the Nlrp3 inflammasome, and ERS in vivo. Therefore, targeting mtROS might be an effective strategy for preventing CKD.
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Cell. Physiol. Biochem. · Jan 2017
Hydrogen Gas Attenuates Myocardial Ischemia Reperfusion Injury Independent of Postconditioning in Rats by Attenuating Endoplasmic Reticulum Stress-Induced Autophagy.
To study the effect of inhaling hydrogen gas on myocardial ischemic/reperfusion(I/R) injury in rats. ⋯ These results revealed a better protective effect of hydrogen on myocardial ischemic/reperfusion injury in rats by attenuating endoplasmic reticulum stress and down-regulating autophagy compared with ischemic postconditioning treatment.
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Cell. Physiol. Biochem. · Jan 2017
Erythropoietin-Derived Peptide Protects Against Acute Lung Injury After Rat Traumatic Brain Injury.
Traumatic brain injury (TBI) can be complicated by TBI-triggered acute lung injury (ALI), in which inflammation plays a central role. It has been reported that an Erythropoietin-derived peptide (pHBSP) was able to ameliorate TBI; however, its function in TBI-caused ALI has not been reported yet. ⋯ We identified the protective role that pHBSP played in TBI-caused ALI, suggesting that pHBSP is a potent candidate for systemic therapy in TBI patients.