Objective:To explore the effects of mindfulness-based stress reduction(MBSR)on pain relief,anxiety and depression and quality of life in naval personnel with chronic pain.Methods:A total of 72 naval person-nel with chronic pain were randomly divided into MBSR group and routine intervention group.The routine interven-tion group received routine care,while the MBSR group received MBSR in addition to routine care.The Short-Form McGill Pain Questionnaire(SF-MPQ),Self-Rating Anxiety Scale(SAS),Self-Rating Depression Scale(SDS),and 36-item Short Form Health Survey Scale(SF-36)were used at baseline and after 8 weeks of intervention.Results:The differences in the scores of 3 subjects of SF-MPQ,SAS,SDS and SF-36 in MBSR group at baseline and 8 weeks after intervention were higher than those in routine intervention group(Ps＜0.05).Conclusion:It suggests that mindfulnecs-based stress reduction could alleviate the degree of pain,anxiety and depression of patients with chronic pain in naval personnel and improve their quality of life.

Objective To investigate the job burnout of medical staff during long voyage in a navy warship troop and its influencing factors.Methods A total of 141 medical staff,who participated in a long voyage between January 2021 and December 2021,were consecutively included for surveys about basic information,job burnout,sleep quality,and regulation mode.Univariate and multivariate analyses were used to explore influencing factors for job burnout.Results The proportion of mild and below job burnout and moderate to severe job burnout in the cohort was 45.39%and 54.61%,respectively.Univariate analysis showed that married status,Master's or Doctor's degree,moderate to heavy workload,no psychological training experience,sleep disorder and low-exercise regulation mode were significant influencing factors for job burnout(P<0.05).Multivariate analysis showed that married status,Master's or Doctor's degree,sleep disorder and low-exercise and high-evaluation regulation mode were independent risk factors for job burnout(P<0.05).However,psychological training experience was considered to be a significant protective factor(P= 0.021).Conclusion Medical staff in a navy warship troop experiences severe job burnout during long voyage.The people who are married,have a Master's or Doctor's degree,have sleep disorder and low-exercise and high-evaluation regulation mode are more likely to experience job burnout,which should be paid more attention to.

Objective: To examine the regulatory effect of bone marrow mesenchymal stem cells (BM-MSCs) on the polarization of bone marrow-derived macrophages, and to provide a theoretical support for the application of mesenchymal stem cells in the treatment of liver fibrosis. Methods: MSCs and macrophages were first isolated from the bone marrow of mice. Macrophages were polarized to M1 macrophages with lipopolysaccharide (LPS) and interferon-γ (IFN-γ), and to M2 macrophages with interleukin-4 (IL-4). The macrophages were then co-cultured with BM-MSCs in a Transwell for 24 h, and changes in the percentages of M1 and M2 macrophages were examined using flow cytometry. The mRNA levels of the M1 macrophage-associated cytokines, tumor necrosis factor-α (TNF-α) and interleukin-23a (IL-23a), and M2 macrophage-associated molecules, arginase-1 (Arg-1) and CD163, were measured by real-time quantitative PCR. The two samples were compared using the t test, and P < 0.05 was considered as statistically significant. Results: Flow cytometry showed that the percentage of M1 macrophages was significantly lower in the (macrophage + LPS + IFN-γ + BM-MSC) co-culture group than in the (macrophage + LPS + IFN-γ) group (62.5% ± 4.6% vs 86.6% ± 6.9%, t = 5.034, P = 0.0073). In addition, the relative mRNA expression of TNF-α and IL-23a was also significantly reduced in the co-culture group compared with those in the macrophage control group as measured by RT-qPCR (t = 11.57 and 10.57, respectively, P < 0.05). Compared with that in the macrophage control group, the percentage of M2 macrophages in the (macrophage+BM-MSC) co-culture group was significantly increased (89.5% ± 5.8% vs 70.1% ± 6.3%, t = 3.924, P = 0.0172), along with significantly elevated relative mRNA expression of Arg1 (14.35±1.05 vs 1.00±0.03, t = 21.96, P < 0.05) and CD163 (3.04 ± 0.27 vs 1.00 ± 0.03, t = 13.14, P < 0.05). Conclusion BM-MSCs can inhibit LPS + IFN-γ-induced polarization to M1 macrophages and promote polarization to M2 macrophages through the release of paracrine factors.