Objective To provide a basis for humanity education in the university by a survey of clinical graduates' recognition of humanity education and humanity curriculum. Method An anony-mous questionnaire was adopted and 514 questionnaires were distributed to the 2014 clinical gradu-ates in Peking University Health Science Center about their understanding of humanity education and humanity curriculum. The investigation data was double entried in Epidata 3.1, apply SPSS 19.0 to make the descriptive analysis, chi-square test. Results 69.3% (167/241) students believed humanity education enhanced their professionalism and competency;52.7%(127/241) students believed humanity education enhanced their doctor-patient communication; 36.4% (174/478) students believed their hu-manity knowledge came from their instructors' personal example and teaching;31.1%(149/479) students said the best way of humanity education was through social practice;59.7%(286/479) students consid-ered the combination of classroom lecturing and discussion as the best way to humanity education. As to the major weaknesses in humanities education, 46.9%(113/241) students chose insufficient curriculum, 23.2%(56/241) chose lack of practical value and 23.7%(57/241) chose monotonous teaching methods;Conclusion The best approach to humanities teaching is to combine class lecture with class discus-sion. Besides, hidden curriculum also contributes to humanity education. The enhancement of clinical graduates education relies heavily on humanity education and its emphasis should be laid on the training of humanity teachers, the study of humanity curriculum and learning from other universities.

Objective To investigate the mechanism of hearing loss after focal cerebral ischemia-reperfusion injury in rats.Methods A total of 60 healthy male adult SD rats were included in this study and randomly divided into 2 groups, ischemia-reperfusion(I/R) group and sham operated control, with 30 rats in each group.The rats in I/R group were operated for suture-occluded method to establish middle cerebral artery occlusion(MCAO)model, with ischemia for 60 mins followed by reperfusion for 24 hrs.The control group was only to be isolated cervical vessels, with no thread embolism inserted.The auditory brainstem response (ABR) was tested before operation and at 24 hrs post-operation respectively.At 24 hrs post-operation, we scored neurological functions, measured the changes of water content in the brain using the dry-wet weight method, and determined the infarct volume through TTC method.We also evaluated the integrity of blood-brain barrier(BBB) by viewing the exudation of Evans blue and observed the apoptosis of neurocyte by TUNEL method to conclude apoptotic index(AI).The expression of MMP-9,Claudin-5,Occludin and CX-43 were detected by Western blot.Results Compared with the sham group,the neurological function scores,the infarct volume and water content of the brain increased, with the elevated thresholds of ABR significantly and AI went up in I/R group.The expression levels of MMP-9 and CX-43 were significantly up-regulated,but the expressions of Claudin-5 and Occludin were obviously down-regulated.All of the differences above had statistical significances.Conclusion The mechanism of hearing loss after focal cerebral ischemia-reperfusion injury in rats is possibly related to MMPs activation,neurocyte apoptosis,BBB breakage and gap junction damage.

Objective To analyze the effects of Leptospira interrogans ( L. interrogans) infection on the activation of NLRP3 in THP-1 and J774A. 1 cells and to further understand the mechanism of inflam-mation caused by L. interrogans in different hosts. Methods Human mononuclear macrophage cell line (THP-1) and murine mononuclear macrophage cell line (J774A. 1) were infected with L. interrogans strain 56601. The expression of NLRP3 at mRNA and protein levels were measured by using real-time RT-PCR and flow cytometry analysis, respectively. The NLRP3-mediated secretion of IL-1β, IL-18 and IL-33 was detec-ted by ELISA combined with the NLRP3 inhibitory test. Results Compared with the normal cells, the ex-pression of NLRP3 at mRNA level in L. interrogans-infected THP-1 cells was respectively increased by 4. 05, 0. 34, 0. 33, 0. 06 and 1. 66 times at the time points of 1 h, 2 h, 4 h, 12 h and 24 h after infection ( P<0. 05), while that in L. interrogans-infected J774A. 1 cells was respectively increased by 12. 98, 16. 19, 10. 68, 5. 8 and 0. 57 times (P<0. 05). The expression rates of NLRP3 protein in THP-1 and J774A. 1 cells respectively increased from 9. 26% to 94. 01%, 89. 24%, 31. 80%, 19. 74%, 11. 28% and from 18. 71%to 58. 78%, 43. 64%, 36. 42%, 76. 46%, 85. 21% at the time points of 1 h, 2 h, 4 h, 12 h and 24 h af-ter L. interrogans infection (P<0. 05). The level of IL-1β in L. interrogans-infected THP-1 cells was 73. 07 pg/ml, 939. 24 pg/ml, 939. 24 pg/ml, 843. 22 pg/ml and 851. 06 pg/ml at the time points of 1 h, 2 h, 4 h, 12 h and 24 h, respectively (P<0. 05), while the level of IL-1β in L. interrogans-infected J774A. 1 cells began to rise at the time point of 12 h from 191. 17 pg/ml to 254. 4 pg/mL at the time point of 24 h (P<0. 05). The level of IL-18 in L. interrogans-infected THP-1 cells was 913. 89 pg/ml, 808. 19 pg/ml, 483. 54 pg/ml, 204. 19 pg/ml and 189. 09 pg/ml at the time points of 1 h, 2 h, 4 h, 12 h and 24 h, re-spectively (P<0. 05), while the level of IL-18 in L. interrogans-infected J774A. 1 cells increased at the time point of 24 h, which was 113. 37 pg/ml (P<0. 05). A slight increase in the level of IL-33 was detected in L. interrogans-infected J774A. 1 cells at the time points of 12 h and 24 h to 201. 14 pg/ml and 155. 68 pg/ml, respectively (P<0. 05), but no significant change was detected in L. interrogans-infected THP-1 cells (P>0. 05). Results of the inhibitory test showed that the up-regulation of IL-1β , IL-18 and IL-33 in THP-1 and J774A. 1 cells were effectively inhibited by the specific inhibitor of NLRP3. Conclusion NL-RP3 inflammasome was activated and involved in the production of specific inflammatory cytokines IL-1βand IL-18 in both THP-1 and J774A. 1 cells after L. interrogans infection, but the inflammatory cytokines induced by L. interrogans infection varied in different cells. L. interrogans induced earlier and higher level of IL-1βand IL-18 production in human macrophages than in murine macrophages.

Objective: To explore character strengths of college students who sought counseling, and its relationship with mental health. Methods: A total of 180 college students who sought counseling were investigated by using the short version of Character Strengths Questionnaire and the Symptom Checklist 90 (SCL-90) during March 2020 to October 2021. Results: The top five character strengths of college students who sought counseling were appreciation, authenticity, gratitude, humor, love of learning ( 8.39± 1.64, 7.82±1.74, 7.73±1.57, 7.29±1.81, 7.17±1.88); The bottom five character strengths were kindness, bravery, persistence, zest, leadership (5.59±1.75, 5.81±1.30, 5.86±1.72, 5.98±1.59, 6.06±1.60). Linear regression analysis found love, social intelligence and insight showed associations with different dimensions of mental health, with correlation coefficient of each regression equation between -0.12 and 0.16, and the coefficient of determination between 0.05 and 0.19 ( P <0.01). Love had a negativeassociation with all factors of SCL- 90 ( β=-0.314--0.159, P <0.05), which could explain 3.3%-12.5% of the variation of each factor. Social intelligence had a negative association with obsessive compulsive, interpersonal sensitivity and anxiety ( β=-0.200--0.150, P <0.05), which can explain 1.6%-3.2% of the variation. Insight had a positive association with somatization, hostility and paranoia ( β=0.168-0.279, P <0.05), which can explain 2.3%-3.8% of the variation. Conclusion The lack and excess of character strengths is associated with mental health problems. Therefore, it would be more effective to help counseling cases build an appropriate and balanced character in the context of a strengths based approach.

Cardiac Catheterization ; Ductus Arteriosus, Patent ; therapy ; Heart Septal Defects, Atrial ; therapy ; Humans ; Printing, Three-Dimensional ; Vena Cava, Inferior

OBJECTIVES: Some changes are found in the labyrinth anatomy during postnatal development. Although the spatial orientation of semicircular canals was thought to be stable after birth, we investigated the age-related orientational changes of human semicircular canals during development. METHODS: We retrospectively studied the computed tomography (CT) images of both ears of 76 subjects ranged from 1 to 70 years old. They were divided into 4 groups: group A (1-6 years), group B (7-12 years), group C (13-18 years), and group D (>18 years). The anatomical landmarks of the inner ear structures were determined from CT images. Their coordinates were imported into MATLAB software for calculating the semicircular canals orientation, angles between semicircular canal planes and the jugular bulb (JB) position. Differences between age groups were analyzed using multivariate statistics. Relationships between variables were analyzed using Pearson analysis. RESULTS: The angle between the anterior semicircular canal plane and the coronal plane, and the angle between the horizontal semicircular canal plane and the coronal plane were smaller in group D than those in group A (P<0.05). The JB position, especially the anteroposterior position of right JB, correlated to the semicircular canals orientation (P<0.05). However, no statistically significant differences in the angles between ipsilateral canal planes among different age groups were found. CONCLUSION: The semicircular canals had tendencies to tilt anteriorly simultaneously as a whole with age. The JB position correlated to the spatial arrangement of semicircular canals, especially the right JB. Our calculation method helps detect developmental and pathological changes in vestibular anatomy.
Ear ; Ear, Inner ; Humans* ; Methods ; Parturition ; Retrospective Studies ; Semicircular Canals* ; Tomography, X-Ray Computed

Objective: To analyse the genomic characteristics of Novirus(NoV) GII.4 genotype JN010 strain isolated form Jinan in 2017. Methods: Seven pairs of primers were designed and used to amplify the JN010 genome. Sequence analyses, alignment and phylogenetic trees of ORF1 and ORF2 genes were performed using the software Lasergene7.1 and MEGA5.2. At the same time the major protein VP1 amino acid mutations were analyzed. Results: The 7 516 bp complete genome sequence of JN010 strain was obtained, the most mutation sites were located in P2 subdomain of VP1. Two substitutions I293N and H373N of VP1 were locate neighboring epitope A, and R297H mutation happened within epitope A and the site A that binding with histo-blood group antigens(HBGAs). The JN010 strain was GII.Pe/GII.4 genotype and genetically closest to the strains found in Osaka of Japan(GenBank accession number LC066046) and the strains in Zhongshan city of Guangdong (GenBank accession number KY407064) respectively according to ORF1 and ORF2 gene homologous and phylogenetic analysis. Conclusions The NoV GII.4 variant strain JN010 has occurred mutations in the key site of the epitope A and site A that bind with HBGAs, and maybe affect its antigenicity and interaction with HBGAs.

Objective To explore the correlation of liver depression grading with estrogen receptor alpha and beta(ERα,ERβ)and G protein-couple receptor 30(GPR30)of the perimenopausal women suffering from non-organic insomnia. Methods A total of 127 perimenopausal women suffering from non-organic insomnia were enrolled into the study. The data collected by four diagnostic methods and the scores of Pittsburgh Sleep Quality Index(PSQI)were used for the scoring and grading of liver depression according to Syndrome Element Differentiation. The mRNA and protein expression levels of ERα,ERβand GPR30 in the mononuclear cells of peripheral blood from the patients were detected with real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) and Western blot (WB)method respectively. Results (1)The differences of mRNA levels of ERα,ERβ and GPR30 were insignificant among the patients with different degrees of liver depression (P > 0.05). ERα mRNA/ERβ mRNA ratio was decreased with the increase of liver depression grading,the differences being significant (F = 6.710, P < 0.001). (2) The differences of protein levels of ERα, ERβ and GPR30 were insignificant among the patients with different degrees of liver depression (P > 0.05);ERα/ERβ protein gray value ratio was decreased with the increase of liver depression grading, and the differences were significant (P < 0.05) . Conclusion The decline of ERα/ERβ is probably contributed to the pathological basis of liver depression in perimenopausal non-organic insomnia women.

In order to investigate the molecular evolution and spatio-temporal migration of Getah viruses (GETV) isolated around the world,the nucleotide and deduced amino acid sequence of GETVs were analyzed and phylogenetic trees were constructed by using informatics software including ClustalX1.83,MegaAlign,GeneDOC and Mega6.0.The Bayesian Stochastic Search Variable Selection (BSSVS) program in the BEAST v 1.8.1 software package was used to analyze the spatial dynamics of the Getah virus.Results showed that the full-length of Getah virus E2 gene consists of 1 266 nueleotides,encoding 422 amino acids.And the homology of nucleotide and amino acid were 94.5％ 100％ and 96.4％ 100％ respectively.The molecular evolution analysis revealed that there were no species and geographical distribution difference existing among GETV host animals (e.g.horses and pigs) and vectors (e.g.mosquitoes).Bioinformatics analysis showed that GETV originated in Malaysia,then it was spread to Japan,China,South Korea,Mongolia,Russia,etc.GETV E2 gene was relatively stable since GETV was first isolated in 1955.The differences of species and geographical distribution did not exist among GETV host animals and vectors,and the virus has spread from tropical regions to Eurasian continent.Thus,strengthening the detection and monitoring of GETV and its infections in humans and livestock is critical.

OBJECTIVE To explore the potential effect and mechanisms of protopanaxadiol deriva-tive 1-(3,4-dimethoxyphenethyl)-3-(3-dehydroxyl-20(s)-protopa- naxadiol-3b-yl)-urea (DDPU) in the treatment of Alzheimer disease.METHODS ELISA assay was performed in both HEK293-APPswe and CHO-APP cells to demonstrate the efficacy of DDPU in reducing Ab level.SH-SY5Y,primary neurons and astrocyte cellswereused to study the regulation of DDPU against the signaling pathways involved in Aβ/ER-stress pathology. APP/PS1 transgenic mice wereusedto study the regulation of DDPU against ADL and cognitive deficits. APP/PS1 transgenic mice were randomly placed into three groups (n=10):The two 6-month transgenic groups were administrated with 30 mg·kg-1DDPU or vehicle and the 6-month non-transgenic group was administrated with vehicle for 100 days by intraperitonealinjec-tion.After 100-day administration,nest construction assay and Morris water maze(MWM)assay were applied to evaluate the daily living activities and cognitive abilities of the mice with continuous DDPU treatment. Upon completion of behavior assays, mice were euthanized, and the brains were removed and bisected in mid-sagittal plane.The right hemispheres were frozen and stored at-80°C,and the left hemispheres were fixed in 4% paraformaldehyde. RESULTS DDPU effectively improved learning and memory impairments in APP/PS1 transgenic mice, and the underlying mechanisms have been inten-sively investigated. DDPU reduced Ab production by inhibiting the PERK/eIF2a signaling-mediated BACE1 translation, while promoted Ab clearance as a PI3K inhibitor thus negatively regulating PI3K/AKT/mTOR signaling in promotion of autophagy.Moreover,DDPU also exhibited neuroprotective effect by attenuating ER stress. Therefore, all findings have clearly demonstrated the crosstalk between Ab and ER stress, and confirmed that targeting ER stress should be a potential target for innovative anti-AD drug development,while highlighted the potential of DDPU in the treatment of AD.