Objective To identify the effects of single immunoglobin IL-1 receptor related protein （SIGIRR） on inflammation induced by high mobility group box 1 （HMGB1） in A549 derived from human alveolar epithelial cells. Methods Eukaryotic expression vectors pCDNA3.1（+） constructed with SIGIRR cDNA were transiently transfected into A549 cells，in which SIGIRR was forced to be over-expressed. Western blot and RT-PCR were applied to detect the expression level of SIGIRR after transfection. After the stimulation by HMGB1，the transcriptional activity of NF-κB in A549 cells was detected by dual-luciferase reporter assay system，and the protein levels of inflammatory cytokine TNF-α and IL-1β were measured by ELISA. Results The expression level of SIGIRR increased significantly in A549 cells transfected with SIGIRR vectors. The transcriptional activity of NF-κB was enhanced obviously after HMGB1 treatment in A549 cells by dual-luciferase reporter assay system，while the transfection of SIGIRR vectors decreased the activity. The protein levels of TNF-α and IL-1β were down-regulated in A549 cells over-expressing SIGIRR after HMGB1 stimulation compared with the non-transfected cells. Conclusions Up-regulated SIGIRR expression can inhibit HMGB1-induced proinlammatory cytokine release in A549 cells such as TNF-α and IL-1β. The transcriptional activity of NF-κB is dampened by SIGIRR transfection，implying that the anti-inflammatory effects of SIGIRR may be involved in the regulation of NF-κB.
Objective To evaluate and summarize the relevant evidence on follow-up management of non-pregnant adult with pulmonary embolism, and provide a reference for optimizing the follow-up plan of non-pregnant adult with pulmonary embolism. Methods Clinical decision-making, guidelines, societies/associations websites related to follow-up of pulmonary embolism, and databases were searched for literature on follow-up management of non-pregnant adult with pulmonary embolism. The retrieval time limit was from databases establishment to December 2023. The included literature was evaluated for quality and summarized to form evidence. Results A total of 13 articles were included, including 3 clinical decision-making articles, 5 guidelines, 1 systematic review, and 4 expert consensus articles, forming 26 best pieces of evidence, involving 8 aspects of follow-up personnel and methods, follow-up time, physical assessment, activity guidance, contraception guidance, filter management, medication guidance, and lifestyle guidance. Conclusions The follow-up management of non-pregnant adult with pulmonary embolism is very important. When medical staff apply relevant follow-up management evidence, they should fully evaluate the patients’ willingness and medical environment, make full use of existing resources, optimize follow-up management strategies, reduce the occurrence of complications, and improve patient prognosis.