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Objectives: The main objectives of this study were to describe the current state of character strengths (CSs) of nurses; explain how they affect stress, sleep quality, and subjective health status; and reveal the mediating role of stress for the subject matter on the association between CSs, sleep quality, and subjective health status.Methods: A cross-sectional online survey was conducted from September to October 2020 in China. A multistage stratified sampling method was used, and 1,221 valid questionnaires across 100 cities in 31 provinces were collected.Results: For the participants in this survey, the three dimensions of CSs ranging from high to low were caring (4.20 ± 0.640), self-control (3.53 ± 0.763), and inquisitiveness (3.37 ± 0.787). There was difference in CSs scores across age (F = 8.171, P < 0.01), professional categories (F = 5.545, P < 0.01), and job tenure (F = 9.470, P < 0.01). The results showed that CSs significantly affected the psychological stress (β = −0.365, P< 0.01), sleep quality (β = 0.312, P< 0.01), and subjective health (β = 0.398, P< 0.01) of nurses. Moreover, psychological stress partially mediated the association between CSs and both types of health outcomes.Conclusion: In China, the CSs of nurses are at high levels. We find that nurses with high-level CSs are likely to experience less psychological stress and exhibit healthy psycho–physiological responses, which contribute to positive health outcomes. Finally, our study argues that strength-based interventions of positive psychology in hospitals should be provided to minimize threats to the physical and psychological health of health professionals, which is a beneficial choice for future hospital reforms in the domain of occupational health management.

Anaerobic digestates were potential mediums for cultivating oleaginous microalgae, but their various components brought uncertainties for aglal growth and lipids production. In this study, three microalgae strains were tested to grow on four typical anaerobic digestates. The results showed that anaerobic food wastewater was an optimal medium for C. pyrenoidosa and S. obliquus culture (N. oleoabundanst cannot survive), achieving the highest biomass (2.15-2.32 g L

BackgroundBoosting the individual learning passion of medical students is a novel approach to improve their academic performance. It facilitates the medical education reform, motivating both policymakers and educators to focus on the function of positive psychology in the career development of medical students. Therefore, this study aimed (1) to assess the status of two types of learning passion; (2) to clarify the relationship between self-esteem and two types of learning passion among Chinese medical students; (3) to examine the mediating role of psychological capital (PsyCap) in the relationship between self-esteem and two types of learning passion, respectively; and (4) to identify the moderating role of professional identity in the relationship between PsyCap and two types of learning passion, respectively.MethodsA cross-sectional online survey was conducted from April to June 2016 in China. A total of 1,218 valid questionnaires (effective completion rate: 67.93%) were collected from four medical schools.ResultsSelf-esteem significantly and positively influenced medical students’ PsyCap (β = 0.637, P < 0.01) and two types of learning passion, including harmonious learning passion (β = 0.589, P < 0.01) and obsessive learning passion (β = 0.436, P < 0.01). PsyCap fully mediated the relationship (β = 0.578, P < 0.01) between self-esteem and harmonious learning passion positively, whereas it suppressed the relationship (β = 0.490, P < 0.01) between self-esteem and obsessive learning passion. Further, professional identity significantly moderated the correlation between PsyCap and harmonious learning passion (β = −0.554, P < 0.05), rather than obsessive learning passion (P > 0.05).ConclusionTwo types of learning passion of medical students are positively influenced by self-esteem and PsyCap. Medical students with high-level self-esteem should possess strong PsyCap, which augments their harmonious as well as obsessive learning passion. Moreover, the positive effect of medical students’ PsyCap on harmonious learning passion is more notable among those with a lower professional identity. Finally, this study argues that strengths-based interventions of self-esteem and PsyCap are a beneficial approach for future enhancing learning passion in the domain of medical education.

Background Medical students struggle with a heavy workload during their comparatively long course of study in China. The future of medical science depends largely on whether or not medical students become qualified. This study aims to explore whether medical students’ academic adaptability affects learning outcomes. This paper will not only provide scientific evidence for educators and administrators of medical schools but will also benefit students by improving their aptitude and adaptability through a thorough discussion on their educational environment. Methods We conducted a cross-sectional survey from September to December 2016. A total of 1977 respondents completed the questionnaire with a response rate of 79.08%. A cross-sectional survey was used in this study. Descriptive statistics, factor analysis, General Linear Model (GLM) analysis, standard multiple regression, and hierarchical multiple regression were performed for data analysis using the Statistical Package for Social Sciences software (SPSS Version 19.0, SPSS Inc., Chicago, IL, USA). Results Out of the 1977 students, 1586 (80.2%) had mean academic adaptability levels over 3. Findings suggested that academic adaptability (Mean = 3.32), immersion in learning (Mean = 3.20), and academic performance (Mean = 3.39), were at the middle level while academic burnout (Mean = 2.17) was at a low level. Academic adaptability of medical students showed a significant negative relation to academic burnout (Beta = − 0.705, P

Proton exchange membrane (PEM) is a key component of proton exchange membrane fuel cells (PEMFCs). In recent years, metal organic framework (MOF) and its composite membranes have become the research hotspots. [Co(L-Glu)(H2O)·H2O]n (Co-MOF, L-Glu = L-glutamate) was synthesized by hydrothermal method. Co2+ ions are coordinated with L-Glu ligands and water molecules to form one-dimensional chains extending along the a-axis, which are further bridged by L-Glu ligands to form a three-dimensional network structure. AC impedance analysis shows that the proton conductivity of Co-MOF reaches 3.14 × 10−4 S·cm−1 under 98% relative humidity (RH) and 338 K. To improve proton conductivity, different contents of Co-MOF were added in chitosan (CS) to form composite membranes Co-MOF@CS-X (mass fraction X = 5%, 10%, 15% wt). The results show the proton conductivity of the Co-MOF@CS-10 composite membrane is 1.73 × 10−3 S·cm−1 at 358 K and 98% RH, which is more than 3 times that of pure CS. As far as we known, this is the first composite made of amino acid MOFs and CS as proton exchange membrane. Furthermore, Co-MOF has an obvious quenching effect on L-histidine in aqueous solution, which can detect the content of L-histidine in water with high sensitivity, and the detection limit is 1 × 10−7 M.

// Libin Yang 1, * , Bo Qu 1, * , Xun Xia 1 , Yongqin Kuang 1 , Jian Li 2 , Kexia Fan 1 , Heng Guo 1 , Hui Zheng 1 and Yuan Ma 1 1 Department of Neurosurgery, Chengdu Military General Hospital, Chengdu, Sichuan 610083, China 2 Department of Anatomy, Chengdu Medical College, Chengdu, Sichuan 610500, China * These authors have contributed equally to this work Correspondence to: Yuan Ma, email: mayuanyy625@163.com Keywords: CCND1, EFEMP1, glioma, SNP, interaction Received: September 08, 2016 Accepted: January 23, 2017 Published: March 27, 2017 ABSTRACT Aims: To investigate the impact of CCND1 and EFEMP1 gene polymorphism, and additional their gene-gene interactions and haplotype within EFEMP1 gene on glioma risk based on Chinese population. Methods: Logistic regression was performed to investigate association between single-nucleotide polymorphisms (SNP) and glioma risk and generalized multifactor dimensionality reduction (GMDR) was used to analyze the gene-gene interaction. Results: Glioma risks were higher in carriers of homozygous mutant of rs603965 within CCND1 gene, rs1346787 and rs3791679 in EFEMP1 gene than those with wild-type homozygotes, OR (95%CI) were 1.67 (1.23-2.02), 1.59 (1.25-2.01) and 1.42 (1.15-1.82), respectively. GMDR analysis indicated a significant two-locus model (p=0.0010) involving rs603965 within CCND1 gene and rs1346787 within EFEMP1 gene. Overall, the cross-validation consistency of the two- locus models was 10\ 10, and the testing accuracy is 60.17%. Participants with rs603965 - GA or AA and rs1346787- AG or GG genotype have the highest glioma risk, compared to participants with rs603965 - GG and rs1346787- AA genotype, OR (95%CI) was 3.65 (1.81-5.22). We conducted haplotype analysis for rs1346787 and rs3791679, because D′ value between rs1346787 and rs3791679 was more than 0.8. The most common haplotype was rs1346787 – A and rs3791679- G haplotype, the frequency of which was 0.4905 and 0.4428 in case and control group. Conclusions: Polymorphism in rs603965 within CCND1 gene and rs1346787 within EFEMP1 gene and its gene- gene interaction were associated with increased glioma risk.

Trichoderma strain T-33 has been demonstrated to have inhibitory effect on the fungus species Cytospora chrysosperma. Here, an active antifungal compound was obtained from Trichoderma strain T-33 extract via combined separation technologies, including organic solvent extraction, liquid chromatography, and thin-layer chromatography. The purified compound was further characterized by advanced analytical technologies to elucidate its chemical structure. Results indicated that the active antifungal compound in Trichoderma strain T-33 extract is 2,5- cyclohexadiene-1,4-dione-2,6-bis (1,1-dimethylethyl).

The aim of the present study was to identify a natural product with the ability to inhibit nuclear factor of activated T cells c1 (NFATc1) translocation from the cytoplasm to the nucleus by high-throughput screening, and to investigate the effect of the natural product upon osteoclast differentiation and its underlying mechanism. An NFATc1 antagonist redistribution assay was performed in U2OS-NFATc1 cells against a natural product library, and Wogonin was found to have the ability to inhibit the NFATc1 translocation from the cytoplasm to the nucleus. The effect of Wogonin on NFATc1 transcription activation was further determined by luciferase assay. An osteoclast differentiation assay was executed to evaluate the effect of Wogonin on osteoclast differentiation. The effect of Wogonin upon the vital genes in osteoclast differentiation was investigated using fluorescent quantitative polymerase chain reaction analysis. The natural product Wogonin significantly inhibited the translocation of NFATc1 from the cytoplasm to the nucleus and its transcriptional activation activity. Wogonin also significantly inhibited osteoclast differentiation and decreased the transcription of osteoclast-associated immunoglobulin-like receptor, tartrate-resistant acid phosphatase and calcitonin receptor. In conclusion, the natural product Wogonin inhibited osteoclast differentiation through the inhibition of NFATc1 translocation from the cytoplasm to the nucleus, and thus the downregulation of genes associated with osteoclast differentiation, which marked Wogonin as a potential treatment for osteoporosis.

The purpose of this work was to develop and characterize a novel delivery system of post-expansile hydrogel foam aerosol of propylene glycol-embodying liposomes (PG-liposomes) (PEHFL) for vaginal drug delivery applications. Matrine (MT) was used as a model drug to investigate the vaginal mucous membrane permeation behavior of MT from PEHFL versus PG-liposomes foam aerosol (PLFA), hydrogel foam aerosol (HFA) and hydrogel (HYG). The MT loaded PG-liposomes were characterized for shape, particle size, polydispersity, zeta potential and encapsulation efficiency; the foams of PEHFL were also characterized for swelling behavior, mucoadhesive force and duration. Results revealed that: (i) the MT loaded PG-liposomes had a mean size of 122 ± 16 nm, a good polydispersity index of 0.147 ± 0.023, and exhibited a negative charge of -47.5 ± 0.4 mV, the MT entrapment capacity in PG-liposomes (was calculated as percentages of total drug) was 80.8 ± 2.6%; (ii) the foams of PEHFL had a laggingly swelling process after spurted from a sealed container, and the higher the temperature of the surrounding environment, the greater the degree of swelling, this swelling state of foams would greatly enhance drug spread uniformly in vaginal canal and contact the vaginal walls tightly; (iii) the foams of PEHFL had a mucoadhesive force about 1460 ± 123 mN/cm(2), and could sustain 85 ± 11 min in vitro; (iv) the overall mean permeated MT through unit mass of porcine vaginal tissue from PEHFL was 2.64, 2.34 and 7.59 times higher than that from PLFA, HFA and HYG, respectively (t-test, P0.05); and the quantity of MT remaining in the vaginal tissue at the end of the 12h experiment was also significantly greater (t-test, P0.05) from the PEHFL than from PLFA, HFA and HYG. All of these results indicate that the main advantages of PEHFL over conventional dosage forms are the ability to enhance the vaginal mucosa permeability of MT, spread uniformly in vaginal canal especially the highly folded epithelial surfaces, prolong the residence time at the site of administration and induce MT delayed release. In conclusion, the PEHFL may be a promising delivery system for vaginal delivery of medication.

Four new diterpenoides, isolophanthins A-D (1-4) together with seven known abietane diterpenoides (5-11), have been isolated from Isodon lophanthoides var. gerardianus. The new diterpenoides were elucidated by spectroscopic analysis. Some of them showed significant activities against HBsAg and HBeAg of hepatitis B virus in Hep G 2.2.15 cells, as well as the human tumor cell lines, HL-60, A-549, MOLT-4, and BEL-7402.

Degenerative osteoarthropathy is a kind of arthrosis induced by various factors, with main pathological feature of articular cartilage and syndesmophyte formation. In recent years, its morbidity increases year by year and tend to appear more among young people. Its curative effect has yet to be improved. This paper mainly discussed the clinical curative effect of therapy of Chinese drug iontophoresis in degenerative osteoarthropathy. A total of 296 cases of degenerative osteoarthropathy was randomly divided into two groups (with no consideration on gender): Chinese drug iontophoresis group: joint was treated by therapy of Chinese drug iontophoresis and MTZ-F experiment; frequency electrotherapy group: joint was only treated by medium frequency electrotherapy. Two groups were both treated for 30 min for one time, 1 time for a day, total for 4 weeks. Result of the study found that, total effective rate of medium frequency electrotherapy group was 74.3%, Chinese medicine iontophoresis group was 93.2%; curative effect of Chinese medicine iontophoresis group was superior to electrotherapy group. It indicates that, Chinese medicine iontophoresis has good clinical effect in the treatment of osteoarthropathy and deserves to be popularized and applied.

Introduction: Long non-coding RNAs (lncRNAs) are aberrantly expressed in many diseases including cancer. LncRNA HULC (highly up-regulated in liver cancer) has recently been revealed to be involved in hepatocellular carcinoma development and progression. However, the role and function of HULC in human osteosarcoma remains unknown. Methods: LncRNA HULC expression in osteosarcoma tissues and cell lines was detected by quantitative real-time PCR. Then, the association of HULC level with survival of osteosarcoma patients was performed by the Kaplan-Meier and Cox proportional regression analyses. Furthermore, the effects of HULC on tumorigenicity of osteosarcoma cells were evaluated by in vitro assays. Results: In the present study, we demonstrated that HULC was significantly up-regulated in osteosarcoma tissues and cell lines compared with normal controls, and over-expression of HULC was correlated with clinical stage and distant metastasis. Moreover, higher HULC expression was associated with shorter overall survival of osteosarcoma patients. Furthermore, decreased expression of HULC markedly suppressed osteosarcoma cell proliferation, migration, and invasion. Conclusions: Our results indicated that HULC is a novel molecule involved in osteosarcoma progression, which may provide a new marker of poor prognosis and a potential therapeutic target for osteosarcoma intervention.

Objective To evaluate the therapeutic effect of small craniotomic posterior fossa decompression combined with occipital-cervical bone graft fusion and internal fixation on Chiari malformation complicated with basilar impression.Methods The clinical data of 16 cases(7 males and 9 females,aged 17 to 65 years,mean 36.4) of Chiari malformation complicated with basilar impression from 2006 to 2010 were retrospectively analyzed.The diagnoses for all the patients were confirmed by radiology.Small craniotomic posterior fossa decompression was performed in all patients,cerebellar tonsils were resected,and then one-stage occipital-cervical bone graft fusion using autogenous iliac bone and internal wiring fixation were performed.Neck support was used for 3 months after surgery.Results Symptoms were significantly improved in all cases after surgical operation.No patient died or infected.Cerebrospinal fluid leakage was found at draining site in one case.Transient pain of scapular and chest was found in one case and disappeared spontaneously.A 6-months follow-up showed that 6 patients were cured,9 improved and 1 unchanged according to Symon and Lavender standard.Postoperative MRI showed the reconstructed cisterna magna was clear in all patients,no cerebellar ptosis was found,and the occipital-cervical graft bone was fused.Conclusion In patients with Chiari malformation complicated with basilar impression,small craniotomic posterior fossa decompression combined with one-stage occipital-cervical bone graft fusion and internal wiring fixation has a clear and definite effect,it can increase the volume of posterior fossa and alleviate the ventral brain stem compression simultaneously,and reconstruct the stability of cranio-cervical junction.

Two new dibenzocyclooctadiene lignans angeloyl-(+)-gomisin K(3) (1) and methylisogomisin O (2), together with six known ones, isogomisin O, angeloylisogomisin O, gomisin O, angeloygomisin O, benzoylgomisin O, epigomisin O, and four 1,4-bis(phenyl)-2,3-dimethylbutane type lignans, pregomisin, meso-dihydroguaiaretic acid, isoanwulignan, and sphenanlignan were isolated from the aerial parts of Schisandra propinqua var. propinqua. The structures of 1 and 2 were elucidated by spectroscopic methods including extensive 1D- and 2D-NMR techniques.

Objective: To assess the role of XPG, XPC, CCNH and MMS19L polymorphisms response to chemotherapy in osteosarcoma, and the clinical outcome of osteosarcoma. Methods: One hundred and sixty eight osteosarcoma patients who were histologically confirmed were enrolled in our study between January 2007 and March 2009. Genotyping of XPG, XPC, CCNH and MMS19L was performed in a 384-well plate format on the MassARRAY® platform. Results: Individuals with rs2296147 TT genotype showed a better response as compared with CC genotype, with the OR (95% CI) of 3.89(1.49-10.95). Those carrying rs29001322 TT genotype presented better response to chemotherapy, and the OR (95% CI) was as high as 12.25(2.63-121.84). Patients carrying TT genotype of XPG rs2296147 and MMS19L rs29001322 showed a significantly longer overall survival than CC genotype, they had 0.37 and 0.31-fold risk of death when compared with wide-type of this gene. Conclusions: XPG rs2296147 and MMS19L rs29001322 are correlated with response to chemotherapy and prognosis of osteosarcoma. Our findings would provide important evidence for prognostic and therapeutic implications in osteosarcoma.

Two new tetrahydrofuran lignans, kadlongirins A and B (1, 2), a new cadinane-type sesquiterpenoid, 2,7-dihydroxy-11,12-dehydrocalamenene (3), together with seven known lignans, grandisin, fragransin B1, vladirol F, kadsuralignan C, otobaphenol, isoanwulignan, and 4-[4-(3,4-dimethoxyphenyl)-2,3-dimethylbutyl]-2-methoxy-phenol, were isolated from the leaves and stems of Kadsura longipedunculata. The structures of these new compounds were elucidated by spectroscopic methods. Compound 2 exhibited weak anti-human immunodeficiency virus-1 activity with an EC50 value of 16.0 microg/ml, and therapeutic index (TI) value of 6.7.

Pre-schisanartanin (1) and schindilactones A−C (2−4) were isolated from Schisandra chinensis. Among them, compound 1 had an unprecedented carbon skeleton. More importantly, the structure features of this compound provided new insight into the biosynthesis of triterpenoids with schisanartane skeleton. Their structures were determined by extensive spectroscopic analysis, single-crystal X-ray diffraction, and on the basis of the absolute structure of one related nortriterpenoid (5), which was determined for the first time by a modified Mosher method.

Although many scholars have utilized high-throughput microarrays to delineate gene expression patterns after spinal cord injury (SCI), no study has evaluated gene changes in raphe magnus (RM) and somatomotor cortex (SMTC), two areas in brain primarily affected by SCI. In present study, we aimed to analyze the differentially expressed genes (DEGs) of RM and SMTC between SCI model and sham injured control at 4, 24 h, 7, 14, 28 days, and 3 months using microarray dataset GSE2270 downloaded from gene expression omnibus and unpaired significance analysis of microarray method. Protein–protein interaction (PPI) network was constructed for DEGs at crucial time points and significant biological functions were enriched using DAVID. The results indicated that more DEGs were identified at 14 days in RM and at 4 h/3 months in SMTC after SCI. In the PPI network for DEGs at 14 days in RM, interleukin 6, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), FBJ murine osteosarcoma viral oncogene homolog (FOS), tumor necrosis factor, and nuclear receptor subfamily 3, group C, member 1 (glucocorticoid receptor) were the top 5 hub genes; In the PPI network for DEGs at 3 months in SMTC, the top 5 hub genes were ubiquitin B, Ras‐related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1), FOS, Janus kinase 2 and vascular endothelial growth factor A. Hedgehog and Wnt signaling pathways were the top 2 significant pathways in RM. These hub DEGs and pathways may be underlying therapeutic targets for SCI.

5-dihydroxyanthraquinone-2-carboxylic acid (rhein) inhibits oxidoreduction induced by reducing nicotingamide adenine dinucleotide in the mitochondria and reducing reactive oxygen species, it also suppresses lipid peroxidation in rat brain homogenates. This study was to assess the effects of anthraquinone derivatives, rhein on synaptic transmission in the rat hippocampal CA1 pyramidal cell layer by intracellular recording.The excitatory postsynaptic potential (EPSP) evoked by stimulation of the Schaffer collaterals in the presence of bicuculline (15 micromol/L) was depressed by application of rhein (0.3 - 30 micromol/L). The amplitude of the EPSP was restored within 20 minutes after removal of rhein from the supernatant. At a concentration of 30 micromol/L, rhein reduced the amplitude of the EPSP to 42% +/- 3.7% (n = 24) of the control. Subsequently, wavelet spectral entropy was used to analyze the EPSP.A strong positive correlation was observed between the wavelet spectral entropy and other parameters such as amplitude, slope of rising phase and slope of descending phase of the EPSP. The paired-pulse facilitation (PPF) of the EPSP was significantly increased by rhein (30 micromol/L). The inhibitory postsynaptic potential (IPSP) recorded in the presence of CNQX (20 micromol/L) and APV (40 micromol/L) is not altered by rhein (30 micromol/L).Rhein (30 micromol/L) can decrease the frequency but not the amplitude of the miniature EPSP (mEPSP). It is suggested that rhein inhibits excitatory synaptic transmission by decreasing the release of glutamate in rat hippocampal CA1 pyramidal neurons.