ABSTRACT
Sphingosine 1-phosphate (S1P) is one of the crucial signal molecules, which can regulate many biological functions inside and outside cells. It plays an important role in regulating numerous physiological and pathological processes after being combined with S1P receptors (S1PRs). S1P/S1PRs signaling pathways have become a hot spot in the current research on endothelial inflammation and atherosclerosis. This review described the current development of the role of S 1P and its receptors in atherosclerosis.
ABSTRACT
Objective To evaluate the security and effectiveness of emerging sternal rigid plate by comparing with wires closure. Methods 60 patients who undergoing median sternotomy from two centers were enrolled in this study, 30 received wire cerclage( control group) and the other 30 received rigid plate fixation( experimental group) . Patients' sternal were closed with wires or rigid plates, and the painness, sternal union and status of wires or rigid plates were followed up and assessed one week, three months and six months after procedures. Results All patients survived and were followed up. 117 rigid plates were implanted. There was no significant difference in pre-operative data, post-operative painness, sternal union and status of wires and plates between control and experimental group. No patient reached the standard of clinical sternal union one week post-operation, but all patients reached the standard of clinical sternal six months post-operation. One patient in control group suffered sternal nonunion, movement and wound infection after sternotomy. Conclusion Compared to wire closure, sternal closure with rigid plates is the same safe and effective.
ABSTRACT
Objective To summarize experiences in treatment of traumatic aortic rupture. Methods Between July 2001 and December 2008, 17 patients with acute traumatic aortic rupture were treated in our department. One patient died of hemorrhagic shock one hour after admission before opera-tion. Nine patients underwent thoracotomy under general anesthesia with double lumen endotracheal tube and normothermic femoral-femoral partial cardiopulmonary bypass, with bypass time for 35-139 minutes and aortic clamping time for 25-87 minutes. Successful operation was performed in seven patients inclu-ding one treated with simple repair and the other six with partial replacement of thoracic aorta with artifi-cial vascular graft. The other seven patients underwent endovascular repair and received stent grafts at the site of thoracic injury via right lilac-femoral artery under general or local anesthesia. Results One pa-tient free from operation was died of hemorrhagic shock. Of nine patients treated with thoracotomy, two patients died of hemorrhagic shock during operation and the other seven survived, with operation time ran-ging from 100 to 180 minutes. Seven survivors were followed-up for 2-6 years, with no death during fol-low-up period. Seven patients in endovascular repair group recovered, wiht operation time ranging from 50 to 70 minutes. All these seven patients were followed up for 3-14 months, which showed no death. Reex-amined CT in six patients showed no mediastinal hematoma or leakage of contrast medium from the aorta isthmus at 2-5 months after operation. Conclusions Endovascular repair is simple, safe and effective for traumatic aortic rupture. The selection of thoracotomy and endovascular repair is based on following conditions: the combined injuries of patients, the equipments of hospital and the skills of operators.