Objective To explore the influence of parenteral nutrition (PN)supportive therapy on the nutritional status and immune function in patients with advanced gastrointestinal tu-mor in peri-chemotherapy period.Methods 90 patients with advanced gastrointestinal tumor were randomly divided into control group and observation group.Efficacy was compared between two groups by detecting the changes of various nutritional and immune indexes before and after chemotherapy.Results There were no significant differences of the nutritional and immune func-tion indexes between two groups before chemotherapy and after the first-second cycle of chemothera-py.All nutritional and immune function indexes after the third cycle of chemotherapy in the obser-vation group were significantly better than those in the control group.The incidence rate of compli-cations such as leucopenia,thrombocytopenia,nausea,vomiting and diarrhea in the observation group was significantly lower than the control group.Conclusion PN supportive therapy can not only ameliorate the nutritional status and immune function of patients with advanced gastrointestinal tumor,but also alleviate the chemotherapy-induced adverse reactions,so it is very important for safety in peri-chemotherapy period.

Objective To explore the influence of parenteral nutrition (PN)supportive therapy on the nutritional status and immune function in patients with advanced gastrointestinal tu-mor in peri-chemotherapy period.Methods 90 patients with advanced gastrointestinal tumor were randomly divided into control group and observation group.Efficacy was compared between two groups by detecting the changes of various nutritional and immune indexes before and after chemotherapy.Results There were no significant differences of the nutritional and immune func-tion indexes between two groups before chemotherapy and after the first-second cycle of chemothera-py.All nutritional and immune function indexes after the third cycle of chemotherapy in the obser-vation group were significantly better than those in the control group.The incidence rate of compli-cations such as leucopenia,thrombocytopenia,nausea,vomiting and diarrhea in the observation group was significantly lower than the control group.Conclusion PN supportive therapy can not only ameliorate the nutritional status and immune function of patients with advanced gastrointestinal tumor,but also alleviate the chemotherapy-induced adverse reactions,so it is very important for safety in peri-chemotherapy period.

Objective:Explore the characteristics of injury current changes in ventricular septal myocardium during left bundle branch area pacing (LBBAP) surgery.Methods:Retrospective analysis of clinical data of patients who underwent permanent pacemaker implantation at The Second People's Hospital of Wuxi in Jiangsu Province from January 2020 to November 2022. Among them, 42 patients were treated with LBBAP (LBBAP group) and 56 patients with Right ventricle septum pacing (RVSP group). Compare the conventional parameters such as threshold, perception, impedance during electrode implantation, damage current values at 0, 5, and 10 minutes before and after electrode rotation, and the correlation between damage current and conventional parameters. The measurement data is represented by xˉ± s, analysis of variance is used for comparison between multiple groups, t-test is used for comparison between two groups, and repeated measurement analysis of variance is used for comparison between two groups at multiple time points; Counting data is represented as an example (%), and inter group comparisons are made using χ 2 Inspection; Pearson correlation analysis was used to analyze the correlation between the two variables. Results:There was no statistically significant difference in pacing threshold, perception, and impedance between the two groups of electrode implantation surgery (all P>0.05). The damage current values at 0, 5, and 10 minutes before and after electrode rotation in the LBBAP group were higher than those in the RVSP group [(7.19±1.26) mV compared to (5.33±0.79) mV, (22.50±3.06) mV compared to (10.85±1.70) mV, (15.75±2.63) mV compared to (8.01±1.09) mV, (9.24±2.00) mV compared to (5.51±0.98) mV]. The damage current values at 0 minutes after electrode rotation in both groups were higher than before electrode rotation, and gradually decreased thereafter, After 10 minutes of electrode placement, the damage current value of the LBBAP group was still higher than the level before electrode rotation (all P<0.05), while there was no statistically significant difference between the RVSP group and the level before electrode rotation ( P>0.05). The damage current value at 0 minutes after the LBBAP group electrode was in place was positively correlated with ventricular septal thickness and left ventricular posterior wall thickness ( r values 0.45 and 0.46, P values 0.003 and 0.002, respectively), and negatively correlated with conventional pacing parameter impedance ( r=-0.32, P=0.037). There was no correlation with threshold and perception ( r values 0.08 and 0.01, P values 0.604 and 0.968, respectively). The damage current value at 0 minutes after the RVSP group electrode was in place was negatively correlated with the threshold ( r=-0.28, P=0.036). Conclusions:The COI value of LBBAP interventricular septum myocardium increased significantly after the electrode was rotated out. The COI value at 0 min after the electrode put in place was positively correlated with the interventricular septum thickness and left ventricular posterior wall thickness, and negatively correlated with the electrode impedance, but there was no correlation with threshold and perception.

Objective:To investigate the effects and mechanism of cannabinoid (CBD) on the anxiety- and depression-like behaviors induced by lipopolysaccharide (LPS) in mice.Methods:C57BL/6J mice were intraperitoneally injected with LPS to establish the model of neuroinflammation. CBD was injected intraperitoneally 24 h after modeling. Behavioral tests were performed to evaluate the anxiety- and depression-like behaviors in mice. CBD-pretreated BV-2 microglia cells were stimulated with LPS in vitro. The levels of tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β) and CD86 in mouse cerebral cortex, hippocampus, prefrontal cortex and BV-2 cells were measured by qRT-PCR. The protein level of nuclear factor (NF-κB) in mouse brain and BV-2 cells was determined by Western blot. Results:CBD significantly increased the residence time and movement distance of LPS-treated mice in the central area in the open filed test (OFT), and reduced the immobility time in tail suspension test (TST) and force swimming test (FST). In addition, CBD alleviated the neuroinflammation and inhibited the activation of microglia in mouse brain. In vitro, CBD significantly inhibited the activation of BV-2 microglia cells. Both in vivo and in vitro experiments confirmed that CBD could inhibit NF-κB expression. Conclusions:LPS could induce the activation of BV-2 microglia cells and the expression of inflammatory factors in mouse brain accompanied with abnormal behaviors. CBD could inhibit the activation of microglia, alleviate the neuroinflammation in different regions of mouse brain and improve behavioral performance.