Tohoku Journal of Experimental Medicine最新文献

Mycoplasma pneumoniae pneumonia (MPP) poses a major threat to pediatric health. Our previous study suggested that GAS5 level was elevated in the peripheral blood of MPP children. However, the mechanism by which GAS5 regulates lung inflammation Mycoplasma pneumoniae (MP) infection-induced remains unknown. An MPP mouse model was constructed by MP intranasal injection to enrich for alveolar macrophage (AM). Mouse AM was stimulated using lipid-associated membrane proteins (LAMPs) to mimic an in vitro pneumonia model, and transfection was used to achieve specific knockdown or overexpression of target genes. GAS5 level was significantly increased in AM of the MPP mouse model, and significantly and positively related with the mRNA level of HMGB1, but no physical binding between GAS5 and HMGB1 proteins. miR-29c level was significantly decreased in AM of the MPP mouse model and negatively related with the HMGB1. We found the specific binding of GAS5 to miR-29c, and the specific binding of miR-29c to the HMGB1 mRNA 3'UTR. miR-29c mimic and knockdown of HMGB1 both significantly impeded LAMPs-induced apoptosis, IL-6 and TNF-^α secretion, and the NF-^κB activation. Ectopic expression of GAS5 counteracted the effect of miR-29c mimic, and miR-29c inhibitor counteracted the effect of HMGB1 knockdown. Furthermore, silencing of GAS5 significantly alleviated MPP-induced inflammation and pathological lung injury in the MPP mouse model. GAS5/miR-29c/HMGB1 is highly involved in inflammation and lung histopathological injury in MPP disease progression by regulating the NF-^κB signaling pathway.

Forkhead box J2 (FOXJ2) induces cell apoptosis and restrains epithelial-mesenchymal transition in lung cancer, but its capability to serve as a prognostic biomarker in non-small cell lung cancer (NSCLC) remains unclear. Hence, this study intended to investigate the association of FOXJ2 with clinical characteristics, disease-free survival (DFS), and overall survival (OS) in NSCLC patients who received surgical resection. Totally, 182 NSCLC patients who received surgical resection were retrospectively enrolled. Their tumor FOXJ2 expression was quantified by immunohistochemistry (IHC). FOXJ2 IHC score = s taining intensity × density, with a total score of 12. FOXJ2 IHC score was 0 in 128 (70.3%) patients and > 0 in the remaining 54 (29.7%) patients; meanwhile, it was ≤ 3 in 157 (86.3%) patients and > 3 in 25 (13.7%) patients. FOXJ2 was negatively related to node (N) stage (P = 0.013) and tumor-nodes-metastasis (TNM) stage (P = 0.034). Intriguingly, FOXJ2 IHC score was reduced in patients with adjuvant chemotherapy than in patients without adjuvant chemotherapy (P = 0.036). The median DFS and OS (95% confidence interval) were 35.0 (31.3-38.7) months and 48.8 (43.7-53.9) months, respectively. Notably, FOXJ2 IHC score > 0 (P = 0.006) and > 3 (P = 0.002) was correlated with prolonged DFS. Also, FOXJ2 IHC score > 0 (P = 0.027) and > 3 (P = 0.028) was associated with longer OS. After adjustment by backward stepwise multivariate model, FOXJ2 IHC score > 3 was independently associated with prolonged DFS (hazard ratio = 0.367, P = 0.009). In conclusion, tumor FOXJ2 negatively links with N stage and TNM stage; moreover, FOXJ2 IHC score > 3 estimates prolonged DFS and OS in NSCLC patients who received surgical resection.

Gastrointestinal cancer (GIC) patients with tumor resection may experience surgical complications, economic burden, and weakened social connection, which could lead to adverse psychological status. Thus, this study aimed to explore multidimensional psychological status of these patients, encompassing loneliness, spiritual well-being, anxiety, depression, and attitudes to death. Totally, 210 GIC patients with tumor resection and 50 healthy controls (HCs) were enrolled to complete the University of California Los Angeles loneliness (UCLA-LS), functional assessment of chronic illness therapy-spiritual well-being (FACIT-Sp), hospital anxiety and depression scale-anxiety/depression (HADS-A/D), and death attitude profile-revised (DAP-R) scales. UCLA-LS score was increased (P < 0.001), while FACIT-Sp score was decreased (P < 0.001) in GIC patients than HCs. Additionally, HADS-A score (P < 0.001), anxiety rate (P < 0.001), moderate to severe anxiety rate (P < 0.001), HADS-D score (P < 0.001), depression rate (P < 0.001), and moderate to severe depression rate (P = 0.011) were all elevated in GIC patients versus HCs. Concerning attitude to death, DAP-R scores for fear of death (P < 0.001) and death avoidance (P < 0.001) were increased, and the scores for neutral (P < 0.001) and approach (P = 0.010) acceptance were declined in GIC patients than HCs. Notably, female sex, unmarried status, and drinking history were independently linked with increased UCLA-LS score, but gastric cancer was independently associated with decreased UCLA-LS score (all P < 0.050). Neoadjuvant therapy was independently related to anxiety (P = 0.012). Female sex was independently correlated with depression (P = 0.006). In conclusion, GIC patients with tumor resection experience loneliness, anxiety, depression, and reduced spiritual well-being. They tend to fear and avoid, rather than accept death.