This review discusses the relationship between autophagy and hepatocellular carcinoma (HCC).It will focus on the definition and mechanism of autophagy,the effects of autophagy on carcinogenesis,the reaction that chemotherapy and radiotherapy have on autophagy,developments of novel therapeutic methods aimed at autophagy,and will emphasize the bipolar role of autophagy in HCC.

Objective:To investigate the effect of search for meaning on depression and the moderating role of perspective change in college students. Methods:The participants were 1 16 college students. The hypotheses were tested by analyzing data collected at 3 time points. Search for meaning and the presence of meaning in life were measured with the Meaning in Life Questionnaire,the dimension of perspective change in Meaning-Focused Coping Questionnaire was used to assess the ability to change perspective,and depression was assessed with the Center for Epidemiological Studies Depression Scale (CES-D). Results:The scores of perspective change was positively corre-lated with scores of meaning in life (r=0. 29 ,P<0. 0 1 ),and negatively correlated with CES-D scores (r=-0. 34,P<0. 001). The scores of perspective change moderated the relationship between scores of search for mean-ing and scores of presence of meaning in life (β=0. 22,P<0. 01 ),and this interaction effected CES-D scores through the mediation of scores of presence of meaning in life. That is,for the individuals with lower perspectivechange score (blow one standard),the score of search for meaning was negatively associated with the presence of meaning in life,with in turn increased CES-D scores,95%CI:0. 07 -033;among the individuals with higher per-spective change scores (above one standard),there was no mediation effect. Conclusion:The results suggest that perspective change could moderate the relationship between search for meaning and meaning in life,which in turn buffers depression. The findings imply the potential positive role of perspective change in the process of searching for meaning in life among university students.

Objective To investigate the role of klotho protein in the pathogenesis of hypertension. Methods We collected blood samples of 104 patients with hypertension and 61 people without hypertension admitted to our hospital between March and June 2009. Klotho protein and nitric oxide (NO) in blood serum were detected by ELISA and nitro-reductase methods. Results Klotho protein absorbance and NO were lower in hypertension group than in non-hypertension group (P

Objective: To observe the curative effect of TCM syndrome differentiation and treatment for novel coronavirus pneumonia (novel coronavirus pneumonia, NCP) patients and the preventive effect for Chinese medical staff. Methods: A total of 62 NCP suspected patients admitted in 2020 were treated with TCM syndrome differentiation and treatment, as well as our hospital medical staff with No.1-4 hospital prescription. Results: After taking traditional Chinese medicine, 16 out of 25 NCP suspected patients with phlegm heat stagnating lung syndrome were discharged to home for isolation observation, 4 patients hospitalized for observation, and 5 patients confirmed with NCP. For 15 patients with phlegm dampness accumulating lung syndrome, 7 patients were discharged to home for isolation observation, 3 patients were hospitalized for observation and 5 patients have been confirmed. For 18 patients with spleen stomach disharmony syndrome, 15 patients were discharged to home for isolation observation, 1 patient was hospitalized for observation and 2 patients have been confirmed. For 4 patients with Qi deficiency and dampness stagnation syndrome were discharged to home for isolation observation, 1 patient was hospitalized for observation, and two have been confirmed. The duration of taking traditional Chinese medicine was 1 to 20 days from admission to be discharged. The doctors and nurses who took the prescription of TCM for 12 to 15 days have been prevented from NCP infection. Conclusions The clinical effect and the preventive effect of TCM syndrome differentiation and treatment for NCP have been proved to be satisfactory. TCM can go into the primary hospital for treatment and prevention on NCP.

Objective To compare the influence of tracheotomy after two wet fluid on airway and provide the basis for clinical treatment and care. Methods A total of 30 patients with severe brain injury stay neurosurgery tracheotomy were divided into 0.45% sodium chloride group and ambroxol hydrochloride group with 15 cases each by random digits table method, two airway humidification liquid (0.45%sodium chloride,0.9% sodium chloride + ambroxol hydrochloride) were each instilled in the trachea inner sleeve. Blood gas analysis was performed and the levels of serum lung surface active substances related protein-A (SP-A protein), interleukin-6, interleukin-8, tumor necrosis factor-alpha(TNF-α) were measured by enzyme linked immunosorbent assay (ELISA) before 1 d and after 3,7,14 d of tracheotomy. Results There were significant differences in arterial blood oxygen partial pressure, arterial carbon dioxide partial pressure, oxygenation index after 14 d of tracheotomy between ambroxol hydrochloride group and 0.45% sodium chloride group:(110.72±26.75) mmHg(1 mmHg=0.133 kPa) vs.(89.39±21.98) mmHg, (30.44±6.75) mmHg vs. (35.12±7.28) mmHg, 333.23±80.56 vs. 270.93±77.21, t=29.49,-8.63,7.44, P<0.01.There were significant differences in the levels of serum SP-A protein, interleukin -6, interleukin -8, TNF-α after 14 d of tracheotomy between ambroxol hydrochloride group and 0.45% sodium chloride group:(191.34 ±1.21) ng/L vs. (61.92 ±12.0) ng/L, (2.62 ±0.23) ng/L vs. (5.42 ±0.16) ng/L, (124.56 ±2.10) ng/L vs. (185.91 ±1.48) ng/L, (31.32±1.38) ng/L vs.(69.13±1.16) ng/L, t=75.72,-13.51,-23.89,-20.97, P<0.01. Conclusions The airway humidification effect of ambroxol hydrochloride group is better than 0.45%sodium chloride group, it can improve the wetting effect, and better protect the lung tissue, reduce the incidence of lung infection, make it an ideal airway humidification liquid.

Objective To explore the effect of endoplasmic reticulum stress (ER stress) in uric acid?induced phenotypic change in renal tubular epithelial cells (HK?2). Methods (1) HK?2 cells were cultured with 0, 75, 150, 225, 300 mg/L uric acid for 24 h in vitro. (2) The cells were divided into normal control group, ER stress inhibitor 4?PBA (5 μmol/L) group, uric acid (150 mg/L) group and 4?PBA+uric acid group for 24 h. Morphological changes of HK?2 cells were observed under inverted microscope. MTT assay was used to detect the proliferation of HK?2 cells treated with 150 mg/L uric acid for 24, 48 and 72 h. The protein expressions of α?smooth muscle actin (α?SMA), vimentin, snail, glucose regulated protein 78 (GRP78) and the phosphorylation of eukaryotic initiation factor 2α(p?eIF2α) in HK?2 cells were measured by Western blotting. Results Compared with the control group, HK?2 cells in uric acid groups (150, 225, 300 mg/L) showed fibroblast?like appearance. The protein expressions of α?SMA, vimentin, snail, GRP78 and p?eIF2α in 150 mg/L and 225 mg/L uric acid groups were higher than those in the control group (all P<0.05). The proliferation of HK?2 cells in 150 mg/L uric acid group was lower than that in control group at 48 and 72 h (all P<0.01). Compared with the uric acid group, the cell morphology in 4?PBA+uric acid group was improved, and the protein expressions ofα?SMA, vimentin, snail, GRP78 and p?eIF2α were decreased (all P<0.05). Conclusions Uric acid may induce the phenotype transformation of renal tubular epithelial cell, and ER stress is involved. 4?PBA may inhibit the uric acid?induced ER stress response and phenotypic transformation, and may be beneficial in attenuating uric acid?induced renal tubular damage.

Objective To investigate the association between psychological stress and oxidative damage in TNM stage Ⅲ patients with poorly differentiated gastric adenecarcinoma (GA). Methods One hundred and six patients with newly diagnosed poorly differentiated GA were assessed using the Hamilton Depression Rating Scale (HAMD), Zung Self-rating Depression Scale (SDS), Zung Self-rating Anxiety Scale (SAS), Symptom Checklist 90 (SCL-90), activities of daily living (ADL) and other multiple-item qnestionnaires. Oxidative-stress-related parameters in serum and the expression of DNA repair genes were monitored during a pretreatment period. Results The patients were divided into depression and nondepression groups (Groups A and B, respectively) based on a HAMD score cutoff of 20. The mean SDS, SAS, SCL-90, ADL and passive coping scores were higher in Group A, whereas social support and quality of life were lower. Serum total antioxidant capacity, eatalase, superoxide dismutuse concentrations and anti-superoxide anion capacity (A-ASC) were significantly decreased in Group A, whereas serum malondialdehyde (MDA) and 8-hydroxy-deoxyguanosine (8-OHdG) levels were significantly increased. Pearson correlation analysis revealed that depression was pesitively correlated with MDA, SAS, SCL-90 and ADL, but negatively correlated with A-ASC. Furthermore, real-time PCR revealed that the expression levels of hOGG1 and APEX1 were increased in Group A. Conclusion Psychological stress might be related to impaired antioxidant system in patients with GA, and it presents the first evidence of the involvement of oxidative DNA damage in the pathogenesis of depression.

Objective To investigat the relationship between PON_1 192 Gln-Arg gene polymorphisms and coronary artery lesions in Shaanxi Han Chinese.Methods A total of 222 cases with one or more than two branches narrow(≥50%) and 164 cases with no coronary artery narrow(0.05).Conclusion There was no relationship between PON_(1) 192 Gln-Arg gene polymorphisms and Shaanxi Han patients with coronary heart disease.

Objective To study the effect of TREK-1 potassium channel blocker on the behavior in rats with depression.Methods Forty-eight healthy adult male Sprague Dawley (SD) rats were divided into 6 groups as following:control + saline (CON group),control + fluoxetine (CON + FLU group),control + SID1900 (CON+SID group),CUMS + saline (CUMS group),CUMS + fluoxetine (CUMS+FLU group) and CUMS + SID1900 (CUMS+SID group) with 8 in each group.Isolated living conditions combining chronic unpredicted mild stress (CUMS) were used to establish depression model in rats.Four weeks after modeling,fluoxetine 10 mg· kg-1,SID1900 5.1 mg · kg-1 and 0.9％ sodium chloride were given by intraperitoneal injection respectively.Body weight and behavioral performance of rats in several experiment paradigms were measured after drug administration.The behavioral paradigms included sucrose preference test(SPT),open field test(OFT) and forced swimming test(FST).Results Drug administration had no significant effect on body weight and behavioral performance in non stress rats (P＞0.05),however,after chronic unpredicted mild stress the body weight,percentage of sucrose consumption,movement distances and rearing times in CUMS group were decreased dramatically contrast to CON group,but the immobility duration was increased significantly (all P＜0.001).After treatment with drug for 14 days,the sucrose consumption percentage(62.03± 6.99) ％) and rearing times (18.57 ± 6.37) in CUMS+SID group were increased contrast to C UMS group ((45.46± 15.54) ％,(5.83±3.06)),while the immobility time((123.57±26.73) s) was decreased compared with that in CUMS group((174.33±40.68) s).When drug administration for 28 days,the sucrose consumption percentage((79.64± 11.37) ％),the total distance as well as the rearing times ((13.18 ± 3.17) m,(19.33±3.33)) within OFT in CUMS+FLU group were increased in comparison with CUMS group((48.06± 17.10) ％,(4.45±3.69) m,(5.17± 2.99)),and the immobility duration ((97.83± 18.97) s) in CUMS+FLU group was shorter than that ((194.83±37.97) s) in CUMS group(P＜0.05).Notably,the immobility time in CUMS+SID group ((44.29± 14.30)s) was shortened obviously compared with that in CUMS+FLU group ((97.83± 18.97)s) (P＜0.01).Conclusion Blockade of TREK-1 potassium channel can ameliorate the depression-like behavior rapidly in rats.

A series of new pleuromutilins derivatives were designed and synthesized through coupling 2-aminothiazole ring of WL001 with different nitrogen-containing substituted heterocycles in the side chain. Their biological activities were evaluated against both Gram-positive and Gram-negative clinical bacteria in vitro Most new compounds displayed specificity to certain strain of bacteria. Particularly, compounds with saturated nitrogen-containing heterocycles exhibited significant antibacterial activities (0.062 5-8 µg · mL(-1)) superior or similar to those of amoxicillin, tiamulin and levofloxcin. Furthermore, treatment with 15a and 15b having piperidine or morpholine residues also could effectively inhibit Gram-negative bacteria. Therefore, our novel findings may provide a new insight into the design of novel pleuromutilin derivatives and lay the basis for further studies on the treatment of drug-resistance of pathogenic bacteria.