Chinese Med J Peking
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Chinese Med J Peking · Jan 2014
Protectin D1 promotes resolution of inflammation in a murine model of lipopolysaccharide-induced acute lung injury via enhancing neutrophil apoptosis.
Protectin D1 (PD1), derived from docosahexaenoic acid, has been shown to control and resolve inflammation in some experimental models of inflammatory disorders. We investigated the protective roles of protectin D1 in pulmonary inflammation and lung injury induced by lipopolysaccharide (LPS). ⋯ Posttreatment with PD1 enhances resolution of lung inflammation during LPS-induced acute lung injury by enhancing apoptosis in emigrated neutrophils, which is, at least in part, caspase-dependent.
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Chinese Med J Peking · Jan 2014
Two congenital coronary abnormalities affecting heart function: anomalous origin of the left coronary artery from the pulmonary artery and congenital left main coronary artery atresia.
The anomalous origin of the left coronary artery (LCA) from the pulmonary artery (ALCAPA) and congenital left main coronary artery atresia (CLMCA-A) are two kinds of very rare coronary heart diseases which affect heart function profoundly. This study aimed to retrospectively illustrate the clinical features and therapy experience of ALCAPA and CLMCA-A patients. ⋯ ALCAPA and CLMCA-A are two rare coronary artery abnormalities that affect cardiac function in infants and children. In younger patients with cardiomegaly and heart dysfunction these two congenital coronary diseases should be noticed.
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Chinese Med J Peking · Jan 2014
Case ReportsComparisons in finite element analysis of minimally invasive, locking, and non-locking plates systems used in treating calcaneal fractures of Sanders type II and type III.
Calcaneal fractures are relatively common but complex, while the treatment of these fractures is still controversial. The objective of this study was to compare the biomechanical stability of minimally invasive, locking, and non-locking plating systems used for fixing Sanders type II and type III calcaneal fractures. Finite element analysis was used for comparing the three types of plating systems. This study helped in guiding the clinical management of calcaneal fractures. ⋯ The minimally invasive plating method could be a better alternative method in treating Sanders type II and type III calcaneal fractures. The observed stiffness of locking plate was not obviously stronger than unlocked plate.
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Chinese Med J Peking · Jan 2014
Effects of resolvin D1 on inflammatory responses and oxidative stress of lipopolysaccharide-induced acute lung injury in mice.
A variety of inflammatory mediators and effector cells participate together in acute lung injury, and lead to secondary injury that is due to an inflammatory cascade and secondary diffuse lung parenchyma injury. Inflammation is associated with an oxidative stress reaction, which is produced in the development of airway inflammation, and which has positive feedback on inflammation itself. Resolvin D1 can reduce the infiltration of neutrophils, regulate cytokine levels and reduce the inflammation reaction, and thereby promote the resolution of inflammation. The purpose of this study is to investigate the effects of resolvin D1 on an inflammatory response and oxidative stress during lipopolysaccharide (LPS)-induced acute lung injury. ⋯ Resolvin D1 displays potent anti-inflammatory actions by regulating cytokines, inhibiting aberrant neutrophil recruitment and stimulating apoptosis of neutrophils. Resolvin D1 can also relieve the injury due to oxidative stress. The mechanisms might be related to increase HO-1 expression.