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Table of Content

      
    10 April 2020
    Volume 58 Issue 4
    Prevention and control strategy for the diagnosis and treatment of psychiatric disorders during the epidemic of coronavirus disease 2019
    YUAN Yonggui, LI Lei, SHEN Zhongxia, CHEN Gang, WU Yigao, YUE Yingying
    Journal of Shandong University (Health Sciences). 2020, 58(4):  1-6.  doi:10.6040/j.issn.1671-7554.0.2020.325
    Abstract ( 604 )   PDF (1615KB) ( 57 )   Save
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    The National Health Commission of the Peoples Republic of China has classified coronavirus disease 2019(COVID-19)as category B infectious disease and taken preventive and control measures of category A infectious diseases. COVID-19 is highly contagious and all age groups are vulnerable. Therefore, medical institutions should strengthen preventive and control measures during COVID-19 epidemic to refrain from nosocomial infection. Other factors, such as mental status disturbances caused by psychological stress during COVID-19 outbreak, high population density of closed ward and poor behavioral control of psychiatric patients, may hinder the preventive and control measures of COVID-19. We propose the preventive and control strategy of psychiatric disorders during the COVID-19 epidemic to provide reference for various psychiatric institutions.
    Epidemiological characteristics of the first COVID-19 case and related family cluster outbreaks in Jinan City
    CHANG Caiyun, YU Qiuyan, ZHAO Xiaodong, WANG Fang, LI Wei, RUAN Shiman, GENG Xingyi
    Journal of Shandong University (Health Sciences). 2020, 58(4):  7-11.  doi:10.6040/j.issn.1671-7554.0.2020.312
    Abstract ( 1192 )   PDF (2320KB) ( 35 )   Save
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    Objective To analyze the epidemiological characteristics of the first COVID-19 case and related family cluster outbreaks in Jinan City. Methods With reference to the diagnostic criteria in “COVID-19 Diagnosis and Treatment Plan(trail version 5)”, information of the first COVID-19 case in Jinan City and related cluster outbreaks was collected, and the epidemiological characteristics were analyzed. Results The first COVID-19 case(case 1)had onset on Jan. 16, 2020, and led to a family cluster outbreak of 4 cases(cases 1 to 4). Case 5 took the same flight as case 1 and led to another family cluster outbreak of 3 cases(cases 5 to 7). Case 8 was a colleague of case 5 and led to the third family cluster of 3 cases(cases 8 to 10). Conclusion Family cluster is a common way of COVID-19 transmission. Personal protection is important for the control of family cluster outbreaks.
    Analysis and evaluation of the isolation medicine observation for close contacts of New Coronavirus Pneumonia in Jinan City
    YANG Li, LI Zhan, LIU Xiaoxue, JIAO Haitao, ZHOU Lin, LIU Qingjie, LIU Tiecheng, GENG Xingyi
    Journal of Shandong University (Health Sciences). 2020, 58(4):  12-16.  doi:10.6040/j.issn.1671-7554.0.2020.376
    Abstract ( 584 )   PDF (1295KB) ( 18 )   Save
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    Objective To analyze the isolation medicine observation for close contacts of New Coronavirus Pneumonia(NCP)in Jinan City. Methods All information of close contacts who were isolated due to COVID-19 was collected from the epidemiological survey during the epidemic of COVID-19 in Jinan City from January 24 to March 1, 2020. The softwares of Excel 2016 and SPSS16.0 were used to sort and analyze data. Results A total of 1 455 close contacts were isolated for medical observation. A total of 28 cases of COVID-19 infection were detected, including 25 cases of confirmed NCP and 3 cases of positive asymptomatic. The attack rate was 1.92%. 1 455 close contacts were mainly distributed in Lixia District(40.69%), Licheng District(16.98%)and Shizhong District(8.38%). The detection rate of COVID-19 was different among close contacts who had a different relationship with the primary case(χ2=180.34, P<0.001), among which close-connected cases had the highest incidence of close contacts(15.38%). There were 13 primary cases of close contacts of COVID-19 infection, of which 5(38.46%)had a travel history in Wuhan City, 1(7.69%)had a travel history in Hubei province, and 3(23.08%)had traveled outside Hubei Province, the remaining 4 cases(30.77%)had no history of field travel. There were 23 of the close contacts who were managed by Jinan City developed disease, of which 8(34.78%)had developed disease before the close observation period, and the median time interval from onset to isolation was 5 days. There were 15 patients(65.22%)who developed disease during the isolation observation period with a median interval of 3 days. The median time of 23 close contacts from the beginning of the medical observation period to the diagnosis was 2 days, and the median time from onset to diagnosis was 3 days. There were 23 of the close contacts who were managed by Jinan City developed disease, of which 17 patients(73.91%)was ordinary type, and 6 patients(23.09%)were mild. Conclusion There are positive and asymptomatic persons in close contact with COVID-19 infection cases. Screening should be conducted for imported personnel and close contacts who come from key areas. Comprehensive prevention and control measures should be taken as soon as possible. Personal protection measures for home isolation of high-risk groups should be strengthened.
    Research and development of intelligent question answering robot system: a case study of its application in response to COVID-19 epidemic in Jinan City
    QIAO Yu, CUI Liangliang, LI Shuai, WANG Feng, RUAN Shiman, JING Yiming, LIU Chong
    Journal of Shandong University (Health Sciences). 2020, 58(4):  17-22.  doi:10.6040/j.issn.1671-7554.0.2020.310
    Abstract ( 735 )   PDF (6147KB) ( 12 )   Save
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    During the epidemic of coronavirus disease 2019(COVID-19), the local Centers for Disease Control were bombarded with large amounts of questions from the public and the human hotline system was unable to meet the demands. As a result, Jinan Centers for Disease Coatrd developed an “intelligent question answering robot system” to cope with this situation. This paper introduces the design of the robot system and construction and classification of the knowledge base, and evaluates its application effects. The robot system can greatly reduce pressure on the human hotline, actively record and analyze users demands, and improve the quality and efficiency of Centers for Disease Coatrd consultation service. It is a valuable and growable operating mode of consultation service, which can provide reference for the information service in future public health events.
    A comprehensive analysis of 47 COVID-19 cases in Jinan City
    LI Xinrui, GENG Xingyi, ZHAO Xiaodong, LIU Lanzheng, WANG Weiru, CUI Liangliang, LI Zhan, CHANG Caiyun, RUAN Shiman
    Journal of Shandong University (Health Sciences). 2020, 58(4):  23-27.  doi:10.6040/j.issn.1671-7554.0.2020.274
    Abstract ( 754 )   PDF (3246KB) ( 18 )   Save
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    Objective To comprehensively analyze the epidemic characteristics of COVID-19 cases in Jinan in order to provide a basis for establishing and implementing effective prevent and control measures. Methods The demographic information, exposure history to risk factors, transmissibility, clinical symptoms and treatment of COVID-19 cases were analyzed. Results A total of 47 confirmed COVID-19 cases were reported in Jinan. The median latent period was 9 days. The patients were of different ages, genders and professions. Exposure history to risk factors in Wuhan was detected in 29 patients. There were 19 first generation cases, 20 second generation cases, and 9 cluster outbreaks. The median number of people infected was 3, and 25 patients were discharged. The disease was confirmed in 19 patients who came to visit the doctor, and their median incubation period was 4 days. Of all confirmed cases, 74.5% were common cases, and none of them was severe. Conclusion The risk of secondary cases of COVID-19 is low in Jinan. However, due attention should be paid to imported cases caused by the return to work and school, as well as movement of population.
    Effect of sampling positions in nucleic acid test on the test result: a report from 47 confirmed COVID-19 cases in Jinan City
    ZHAO Huailong, LÜ Yan, ZHAO Hong, ZHAO Baotian, HAN Ying, YANG Guoliang, WANG Chunrong, GUAN Hengyun, LIU Hui, LIU Lanzheng
    Journal of Shandong University (Health Sciences). 2020, 58(4):  28-31.  doi:10.6040/j.issn.1671-7554.0.2020.295
    Abstract ( 1144 )   PDF (928KB) ( 19 )   Save
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    Objective To investigate the effect of sampling positions in nucleic acid test for COVID-19 on test results. Methods Clinical specimens collected from 47 confirmed cases of COVID-19 in Jinan City during Jan. 22 and Feb. 11, 2020 were tested with real-time fluorescence quantitative RT-PCR to analyze the effect of different sampling positions on the test results. Statistical analysis was conducted with Fisher’s exact test. Results The 47 patients included 23 males and 24 females, age ranging from 11 months to 71 years, average 35 years. The positive rate of nasopharyngeal swabs and sputum samples was 91.11%(41/45)and 92.31%(13/14), respectively. There was no statistical difference between the results of the two types of samples(Fishers exact test, bilateral P>0.999). However, the Ct value was lower in sputum samples than in nasopharyngeal swabs. Conclusion The nasopharyngeal swabs can meet the requirements for screening and diagnosis of COVID-19, and deep-coughed sputum samples can be used to re-test the “false negative” nasopharyngeal swabs.
    Consideration about cluster epidemic of 37 COVID-19 cases
    LI Xinrui, GENG Xingyi, WANG Weiru, ZHAO Xiaodong, LIU Lanzheng, ZHANG Xiaofei, LÜ Cuixia, CHANG Caiyun, LI Zhan, CUI Liangliang, RUAN Shiman
    Journal of Shandong University (Health Sciences). 2020, 58(4):  32-40.  doi:10.6040/j.issn.1671-7554.0.2020.243
    Abstract ( 648 )   PDF (913KB) ( 5 )   Save
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    Objective To summarize the cluster epidemic characteristics of coronavirus disease 2019(COVID-19)in Jinan City in order to provide reference for further preventive measures. Methods A cross-sectional study was conducted on the demography, exposure history of risk factors, transmission capacity, medical services and clinical symptoms of 37 COVID-19 cases confirmed during Jan. 24 and Feb. 11, 2020. Results There were 9 cluster outbreaks in Jinan City. Among the initial cases, 8 had exposure history of Wuhan City. The median incubation period was 9 days and the median number of infection was 3. The main contact mode was living together. Most cases were common type. So far 25 patients were cured and discharged. Conclusion The SARS-CoV-2 is highly infectious. The clusters of COVID-19 in Jinan City are mainly caused by close contact. Comprehensive measures are recommended to control the spread of the epidemic.
    Epidemiological and clinical characteristics of 10 children with coronavirus disease(COVID-19)in Jinan City
    YANG Liu, LI Zhan, XU Huaru, CHANG Caiyun, LIU Zhong, LI Chuanbin, SUN Zhan, JING Rui, LIU Tiecheng, GENG Xingyi, ZHOU Jingwen
    Journal of Shandong University (Health Sciences). 2020, 58(4):  36-39.  doi:10.6040/j.issn.1671-7554.0.2020.305
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    Objective To analysis the epidemiological and clinical characteristics of 10 children with coronavirus disease(COVID-19)in Jinan City. Methods To collect the information of all the children(<18 years)with COVID-19 in Jinan City by Feb 26, 2020. The diagnosis was based on Chinas “COVID-19 diagnosis and treatment plan(fifth version)”. Data of general information, epidemiological and clinical characteristics were analyzed. Results Ten children with COVID-19 were reported, including 3 males and 7 females. Age distribution included all stages of children. All the 10 confirmed cases of children were family transmitted cases. Parents were the main source of infection in the active sampling and monitoring of close contacts. The shortest time interval from onset to diagnosis was 0 days, the longest was 6 days, and the median time interval was 1.5 days. The clinical symptoms of COVID-19 were mild(3 cases)and common(7 cases). Five children had no symptoms when they were detected the new coronavirus nucleic acid positive for the first time. As of Feb 26, 6 of the 10 confirmed cases were discharged, with a median length of stay was 15 days. Conclusion Family infection is the main source of infection for children. It is important to carry out centralized isolation medical observation and active sampling monitoring of close contacts for early detection of cases.
    Investigation and analysis of a cluster of COVID-19 associated with exposure to a shopping mall in Jinan City
    JING Rui, LIU Tiecheng, WANG Chunrong, HU Yanxia, WU Jingjing, ZHANG Wenqian, GENG Xingyi, RUAN Shiman
    Journal of Shandong University (Health Sciences). 2020, 58(4):  40-43.  doi:10.6040/j.issn.1671-7554.0.2020.368
    Abstract ( 558 )   PDF (2452KB) ( 11 )   Save
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    Objective To analyze a cluster outbreak of COVID-19 associated with exposure to a shopping mall in Jinan City, investigate the possible transmission chain, and provide reference for further prevention and control. Methods An epidemiological survey was conducted on 8 COVID-19 cases associated with a shopping mall, patients family members were interviewed, and data extracted were entered into an excel database for descriptive statistical analysis. Results Of the 8 cases, 4 were employees in a shopping mall, 2 were customers, and 2 were employees family members. The average time from onset to the first visit of 5 patients was 4.8 days. The patients lived in 3 different communities. Three of the four employees worked at the same counter, and one worked on another floor in the mall. A total of 777 close contacts were identified, including 35 family members, 736 employees in the mall and 6 customers. The average number of close contacts per case was 97. Conclusion The cluster outbreak in the shopping mall involves a wide range and large number of close contacts, so it is difficult to control. COVID-19 can be transmitted from person to person, and respiratory droplets and close contact are the major ways of transmission. During COVID-19 epidemic, due attention should be paid to employee’ health declaration and sick leave in order to avoid transmission in work place.
    Epidemiological investigation of a cluster associated with corona virus disease 2019 in Jinan City, China
    ZHAO Mengjiao, LIU Zhong, LI Zhan, CHANG Caiyun, ZHAO Xiaodong, Geng Xingyi
    Journal of Shandong University (Health Sciences). 2020, 58(4):  44-48.  doi:10.6040/j.issn.1671-7554.0.2020.328
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    Objective To investigate the epidemiological characteristics, source of infection, and transmission route of a cluster associated with the corona virus disease 2019(COVID-19), and to provide evidence for prevention and control strategies. Methods Field epidemiological investigation and analysis were performed on 4 cases(A-D). The survey contents included basic information, onset of cases, diagnosis and treatment, exposure history and close contacts. Results Cases A, B, and C all had symptoms such as fever, fatigue, and muscle soreness. Case D was an asymptomatic case. Computed tomography showed interstitial hyperplasia with infection in all of the patients lungs. The interval from onset to treatment was 0-3 days, and the interval from onset to hospitalization was 1-7 days. Case B was the close contact of case A, and case D was the close contact of case C, respectively. Cases A, C, and D were colleagues, and they all went to Beijing, Taian and other places to participate in the companys party activities before the onset. Cases A and B were father-daughter relationship. Conclusion The outbreak was an infection caused by company gatherings and families infection. Cases A, C, and D may have been infected during a meeting in Beijing, and case B was an infection caused by exposure to case A. Investigation, isolation and testing of close contacts should be strengthened to reduce the concentration of personnel and close attention should be paid to asymptomatic cases.
    Investigation of a COVID-19 case with unknown cause and its close contacts
    LIU Zhong, ZHAO Mengjiao, YANG Guoliang, ZHAO Huailong, WANG Linlin, CHANG Caiyun, GENG Xingyi
    Journal of Shandong University (Health Sciences). 2020, 58(4):  49-53.  doi:10.6040/j.issn.1671-7554.0.2020-396
    Abstract ( 697 )   PDF (1125KB) ( 5 )   Save
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    Objective To retrospectively analyze a family cluster of coronavirus disease 2019(COVID-19)with unknown cause in Jinan City. Methods One case of COVID-19 and two second-generation cases were investigated using field epidemiological methods, and 29 close contacts were quarantined. All cases received nucleic acid test with RT-PCR. Results All three cases were family clusters. The initial case(case A)had a short history of travel before onset, but the source of infection was unclear. Cases B and C lived with case A and were infected. Other close contacts with short contact time, low contact frequency and protective measures showed no abnormalities and were tested negative. Conclusion As 2019-nCoV is highly infectious, early detection and early screening of close contacts should be the focus of prevention and control.
    Analysis of a family cluster outbreak of coronavirus disease 2019 in Jinan City
    WANG Weiru, LI Xinrui, WANG Fang, ZHAO Xiaodong, YU Qiuyan, YANG Guoliang, LI Zhan, CHANG Caiyun, ZHAO Mengjiao, LIU Xiaoxue, LI Chuanbin, SUN Zhan, GENG Xingyi
    Journal of Shandong University (Health Sciences). 2020, 58(4):  54-57.  doi:10.6040/j.issn.1671-7554.0.2020.260
    Abstract ( 682 )   PDF (1708KB) ( 18 )   Save
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    Objective To analyze the transmission chain of a family cluster outbreak of coronavirus disease 2019(COVID-19)in Jinan City in order to provide scientific basis for the prevention and control strategies. Methods According to the “COVID-19 Diagnosis and Treatment Plan”, the first case was investigated to track the close contacts and analyze the transmission chain. Close contacts received 2019-nCoV nucleic acid test. Results A total of 5 cases were tracked, including 3 common cases, 1 mild case and 1 asymptomatic case. The first case had onset on Jan. 25, 2020, and the other cases had onset 4 to 7 days later. All family members lived and dined together, which imposed high risk of transmission. Cases B, C, D and E were second generation cases, and the transmission chain was clear. It was obviously a family cluster. Conclusion Early detection of the infection source and screening of close contact are significant for the prevention and control of COVID-19. Strategies of early detection, early report, early quarantine and early diagnosis should be strictly implemented.
    Incidence analysis of 1 403 close contacts of corona virus disease 2019 patients in different contact modes
    ZHOU Lin, LIU Xiaoxue, LI Zhan, GENG Xingyi, LIU Qingjie
    Journal of Shandong University (Health Sciences). 2020, 58(4):  58-61.  doi:10.6040/j.issn.1671-7554.0.2020.284
    Abstract ( 448 )   PDF (935KB) ( 18 )   Save
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    Objective To study the exposure and incidence of close contacts of corona virus disease 2019(COVID-19)cases. Methods The retrospective epidemiological method was used to describe and analyze the contact and incidence of 1 403 close contacts from January 23 to February 29, 2020, and the comparative analysis was made using χ2 test. Results The frequency of close contacts was mainly occasional(78.62%). There was a difference in the composition of locations and ways of contact between contacts of local and nonlocal cases. The attack rate of close contacts of local cases was 2.37%, and that of nonlocal cases was 0. The mean attack rate of all close contacts was 1.78%. Conclusion The incidence of close contacts has a correlation with the frequency and degree of contact. Living together results in the frequent contact, which further leads to multiple clusters in families. The attack rate of family cluster is significantly higher than that of other contacts. Implementing family prevention and control measures will help reduce the attack rate of family cluster.
    Epidemiological analysis of 26 COVID-19 cases at a designated hospital in Jinan City
    MA Yan, ZHANG Xiaoguo, ZHANG Zhongfa
    Journal of Shandong University (Health Sciences). 2020, 58(4):  62-64.  doi:10.6040/j.issn.1671-7554.0.2020.131
    Abstract ( 618 )   PDF (894KB) ( 37 )   Save
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    Objective To describe and analyze the epidemiological characteristics of patients with coronavirus disease 2019(COVID-19)treated at a designated hospital in Jinan from 0:00, Jan. 23 to 12:00, Feb. 5, 2020. Methods Data were collected using the national unified 2019-nCoV epidemiological questionnaire, a database was set up with Microsoft Access, and data were analyzed with SPSS 11.0. Results A total of 26 confirmed cases were treated. The average age of patients was 31.6(range 2 to 72)years. There were 9 cases(34.6%)with travel history or residence history in Wuhan City 2 weeks before onset, and 18 cases(69.2%)were family cluster outbreaks. Among all cases, 1 was severe, 0 was critical, and no death occurred. Conclusion At present, the patients are mainly young and middle-aged, and the illness is relatively mild. As the number of cases increases, there will be more critical cases.
    Clinical features of 51 patients with corona virus disease 2019
    LEI Yu, LU Jing, GU Jiaying, ZHOU Dengfeng, LI Yuanyuan, LU Qiaofa
    Journal of Shandong University (Health Sciences). 2020, 58(4):  65-70.  doi:10.6040/j.issn.1671-7554.0.2020.120
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    Objective To investigate the clinical characteristics of corona virus disease 2019(COVID-19)patients in Wuhan City, and the correlation between inflammatory factors and severity. Methods According to the COVID-19 diagnosis and treatment plan(trial version fifth), the clinical data, including clinical symptoms, blood tests and chest CT, of 51 patients were retrospectively analyzed. The patients were divided into 3 groups: 32 cases of general type, 9 cases of severe type and 10 cases of critical type. Results (1) The main symptoms were fever(42 cases, 82.35%), cough, expectoration(39 cases, 76.47%), chest distress, shortness of breath(24 cases, 47.06%), diarrhea and headache(few cases); the accompanying symptoms included fatigue, muscle ache, headache, nausea, vomiting and diarrhea. The number of days before hospitalization was 1-21, with a median of 7; the number of days of hospitalization was 3-30, with a median of 12. (2) The results of peripheral blood generally showed that, CRP was increased(80.39%), lymphocyte count was decreased(68.63%), lactate dehydrogenase(LDH)was increased(52.94%), and the leukocyte count, neutrophil count, alanine transaminase(ALT), aspartate aminotransferase(AST), γ-glutamyl transpeptidase(γ-GT), total bilirubin(TBIL), direct bilirubin(DBIL), blood urea nitrogen(BUN)and creatinine(Cr)were normal. (3) The characteristics of chest CT showed that the foci were multiple in double lung and field lung, with mainly ground-glass opacity and patchy shadow, showing interstitial pneumonia change. During the course of the disease, the focus could increase, expand and increase in density, and did not form cavity. There was no pleural effusion change, and the focus was not easy to cause blockage of trachea and bronchi. (4) The lymphocyte count in general type was higher than those in severe type and critical type(H=3.656, P=0.001; H=5.572, P<0.001); the lymphocyte count showed no statistical difference between severe type and critical type(H=1.391, P=0.493). The CRP levels among the three groups were statistically different as a whole(F=5.220,P=0.009); The CRP level in critical type was higher than those in general type and severe type(both P<0.05), while that between general type and severe type exhibited no statistical difference(P>0.05). The LDH level in critical type was higher than that in general type(H=-2.961, P=0.009); Compared with the severe type, the LDH levels in general type and critical type exhibited no statistical difference(H=-1.051, P=0.879; H=-1.484, P=0.414). For leukocyte count, neutrophil count, ALT, AST, γ-GT, TBIL, DBIL, BUM, Cr expression levels, there existed no statistical difference after pairwise comparisons(P>0.05). Conclusion (1) Most of the COVID-19 patients are not severe at the initial stage of onset; the main symptoms are fever and cough, accompanied by gastrointestinal system or other systemic symptoms. (2) The levels of lymphocyte count, CRP and LDH are abnormal in severe patients, which may help to judge the severity of the disease.
    Effects of long-term icariin treatment on neuroinflammation in APP/PS1 mice
    WANG Ranran, ZHU Tianrui, ZHANG Feng, WANG Min, MIN Aoxue, LI Heng, LI Xiaohong
    Journal of Shandong University (Health Sciences). 2020, 58(4):  71-77.  doi:10.6040/j.issn.1671-7554.0.2019.1458
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    Objective To study the effects of long-term icariin(ICA)treatment on cognitive function, pathological changes and neuroinflammation in APP/PS1 transgenic mice models with Alzheimers disease(AD), and to explore the possible mechanism. Methods The effects of ICA on learning, memory and spatial cognitive abilities of mice were examined with Morris water maze test. The effects of ICA on the deposition of β-amyloid protein(Aβ), activation of glial cells and generation of proinflammatory cytokines in the hippocampus of mice were detected with immunohistochemical staining. The expression changes of proteins related to NF-κB inflammatory signal response pathway were determined with Western blotting. Results (1) ICA reduced the escape latency(F4th day=4.96, P=0.017; F5th day=9.37, P=0.001)and increased the time in the target section(F=9.31, P=0.001). (2) ICA reduced the deposition of Aβ in the hippocampus of APP/PS1 mice(FAβ area=153.28, P<0.001; FIOD=87.18, P<0.001). (3) ICA inhibited the expression of neurone maker GFAP and Iba-1(FGFAP=370.16, P<0.001; FIba-1=32.11, P<0.001)and the generation of proinflammatory cytokine IL-1β(F=190.10, P<0.001). (4) ICA decreased the ratio of NF-κ B pathway protein p-p65/p65(F=338.77, P<0.001). Conclusion Long-term icariin treatment can improve the cognitive function of APP/PS1 mice by inhibiting the activation of glial cells, reducing the generation of proinflammatory cytokines and Aβ deposition in the hippocampus.
    Airway smooth muscle cells regulate IL-33 expression through TGF-β1/Smad3 signaling pathway to participate in asthma
    CAI Qiujing, ZHANG Qian, HE Xuejia, SUN Wenli, GUO Aili, ZHANG Nan, ZHU Weiwei
    Journal of Shandong University (Health Sciences). 2020, 58(4):  78-83.  doi:10.6040/j.issn.1671-7554.0.2019.1345
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    Objective To investigate the signaling mechanism of interleukin(IL)-33 expression and secretion in mouse airway smooth muscle cells. Methods To observe the effect of TGF-β1 with different concentrations(0 ng/mL, 1 ng/mL, 10 ng/mL, 100 ng/mL)on the secretion and expression of IL-33 in mouse airway smooth muscle cells. ELISA was used to detect the concentration of IL-3 in cell culture supernatant of each group. Western blotting was used to detect the expression of IL-33 protein. The inhibitory effect of TGF-β1/Smad3 signaling pathway blocker(SIS3)was observed and the cells were divided into blank group, pretreated TGF-β1 group, unpretreated SIS3 group and pretreated SIS3 group. ELISA was used to detect the concentration of IL-33 in the cell culture supernatant, and Western blotting was used to detect the expressions of Smad3, pSmad3 and IL-33 protein in each group. Results ELISA result showed that the cellular IL-33 concentration in the blank group, 1ng/mL TGF-β1 group, 10 ng/mL TGF-β1 group and 100 ng/mL TGF-β1 group were statistically different (F=106.4, P<0.05). Compared with the blank group, the IL-33 concentration of 10 ng/mL TGF-β1 group and 100 ng/mL TGF-β1 group were increased(P<0.008 3). The IL-33 concentration of 10 ng/mL TGF-β1 group was higher than that of 1ng/mL TGF-β1 group and 100 ng/mL TGF-β1 group(P<0.008 3). Western blotting result showed that the IL-33 protein expression in blank group, 1 ng/mL TGF-β1 group, 10 ng/mL TGF-β1 group and 100 ng/mL TGF-β1 group was statistically different (F=1 613.0, P<0.05). There exists statiscical difference between each two groups with the most significant increase of IL-33 expression in 10 ng/mL TGF-β1 group(P<0.008 3). Westerm blotting result showed that the IL-33 concentration in blank group, pretreatment TGF-β1 group, unpretreatment SIS3 group and pretreatment SIS3 group was statistically different (F=166.7, P<0.05). Compared with the blank group, the IL-33 concentration of pretreatment TGF-β1 group, unpretreatment SIS3 group and pretreatment SIS3 group were increased(P<0.05). There were statistical difference of Smad3, pSmad3, IL-33 protein expressions among the blank group, pretreatment TGF-β1 group, unpretreatment SIS3 group and pretreatment SIS3 group[(F=4 752.0,P<0.05),(F=4 330.0,P<0.05),(F=2 791.0,P<0.05)]. Compared with the blank group, the Smad3, pSmad3 and IL-33 protein expressions were increased in pretreatment TGF-β1 group and pretreatment SIS3 group while those decreased in unpretreatment SIS3 group(P<0.05). Conclusion TGF- β1 with a certain concentration can stimulate the expression and secretion of IL-33 in mouse airway smooth muscle cells, and TGF-β1/Smad3 signaling pathway can regulate this process involved in the asthma mechanism.
    Ribosomal protein S6 kinase 2 silencing in ethanol-induced myocardial insulin resistance
    XU Hongzhao, HAO Zongshan, SHEN Deqiang, LI Zhaoping, CHEN Liyong
    Journal of Shandong University (Health Sciences). 2020, 58(4):  84-89.  doi:10.6040/j.issn.1671-7554.0.2019.1388
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    Objective To explore the role of ribosomal protein S6 kinase 2(S6K2)in ethanol-induced myocardial insulin resistance. Methods The glucose uptake capacity of H9c2 cells after 100 mmol ethanol stimulation and lentivirus transfection was detected with fluorescence labeling 2-deoxy-2-[(7-nitro-2,1,3-benzoxadiazol-4-yl)amino]-D-glucose(2-NDBG)intake test and glucose oxidase. The expression of S6K2 and phosphorylation of insulin receptor substrate 1(p-IRS-1)were determined with Western blotting. The silencing of S6K2 after lentivirus transfection was detected with real time PCR and Western blotting. Results Ethanol exposure impaired glucose uptake in H9c2 cells. The mean fluorescence intensity of 2-NDBG decreased by 46.5%(P=0.016), the protein expression of p-IRS-1(Ser)increased by 14.4%(P=0.024), and the mRNA and protein expressions of S6K2 increased by 16.8% and 23.5% respectively(P=0.009, P=0.029). After S6K2 silencing, the difference of glucose uptake and p-IRS-1(Ser)expression in ethanol-stimulated H9c2 cells had no statistics significance(P=0.665, P=0.740). Conclusion Ethanol exposure triggers glucose intolerance and insulin resistance in H9c2 cells, and S6K2 silencing can alleviate impaired glucose uptake and insulin sensitivity induced by ethanol.
    Evaluation of an e-questionnaire in the early screening of colorectal cancer
    WANG Tianxiao, LI Jing, LI Hailin
    Journal of Shandong University (Health Sciences). 2020, 58(4):  90-94.  doi:10.6040/j.issn.1671-7554.0.2019.1170
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    Objective To design and establish a social network platform and e-questionnaire for the early screening of colorectal cancer, and to explore the feasibility of the screening scheme. Methods An e-questionnaire survey about colorectal cancer was conducted via Wechat platform, and subjects with high risk were recommended to take enteroscopy. The missing rate of e-questionnaire survey, positive detection rate and enteroscopy compliance were analyzed. Results A total of 1 577 e-questionnaires were collected, 82 subjects received enteroscopy, and 29 of them were tested positive. The number of subjects taking enteroscopy, positive detection rate and detection rate of early colorectal cancer related lesions was 5.20%, 1.84% and 0.44%, respectively. The high-risk subjects screened with e-questionnaire had higher enteroscopy compliance and positive detection rate than other groups. Conclusion The compliance of enteroscopy in people with high colorectal cancer risk can be improved by assistance of social network platform. E-questionnaire can be a feasible way for the early screening of colorectal cancer.
    Correlation between cognitive ability and pulsatility index in patients with mild leukoaraiosis
    GAO Chunyuan, LIU Xingliang, LOU Zhan, LIU Zhankuang, YUE Binghong
    Journal of Shandong University (Health Sciences). 2020, 58(4):  95-99.  doi:10.6040/j.issn.1671-7554.0.2019.1507
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    Objective To investigate the correlation between cognitive ability and pulsatility index(PI)of middle celebral artery in patients with mild leukoaraiosis(LA). Methods A total of 46 patients with mild paraventricular LA treated during Apr. and Oct. 2019 who had the same education level were enrolled as study group, and another 50 volunteers without LA who had the same education level were selected as controls. The two groups were evaluated with Montreal Cognitive scale(MoCA), clock drawing test(CDT)and transcranial Doppler(TCD). The PI of each participant was recorded. Results The study group had significantly lower MoCA score(t=-3.780, P<0.001)but higher PI(t=6.875, P<0.001)than the control group. There was a negative correlation between MoCA score and PI in the LA patients(r=-0.852, P<0.05). In addition to declined overall cognitive level, the study group had lower scores of spatial and executive functions, attention and calculation, and delayed memory impairment than the control group(all P<0.05). There was a negative correlation between PI and spatial and executive functions(r=-0.800), attention and calculation(r=-0.386),and delayed memory impairment(r=-0.587). The study group had lower CDT score than the control group(t=-2.831, P<0.05), and the CDT score was negatively correlated with PI(r=-0.715, P<0.05). Conclusion Mild LA patients may have impaired cognitive function and cerebral flow reserve in the subclinical stage. In the early diagnosis of LA, PI is as important as MoCA. Comparison of impairment of different cognitive domains is helpful in the early intervention of LA, taking the correlation befween CDT and PI as an exemple.
    Correlation between anti-müllerian hormone and natural reproductive potential in women
    GAO Renyuan, ZHANG Jing, LIU Fangfang, LI Ruijing, ZHANG Xiuqing, QIN Yingying
    Journal of Shandong University (Health Sciences). 2020, 58(4):  100-104.  doi:10.6040/j.issn.1671-7554.0.2019.1418
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    Objective To evaluate the relationship between serum level of anti-müllerian hormone(AMH)and natural reproductive potential in women of childbearing age. Methods Clinical data of 601 women who underwent physical examination during Jan. 2016 and May 2018 were collected. The patients were divided into two groups: young age group(≤35 years old, n=292)and advanced age group(>35 years old, n=309). According to the level of AMH, the two group were further divided into three subgroups: low AMH(<1.0 ng/mL), normal AMH(1.0~3.5 ng/mL)and high AMH(>3.5 ng/mL)groups. All women were followed up for 12 months to observe the natural conception 山 东 大 学 学 报 (医 学 版)58卷4期 -高任远,等.抗苗勒管激素与女性自然妊娠能力的关联分析 \=-rate. Results During the follow-up of 12 months, 202(33.61%)participants were pregnant. The clinical pregnancy rate was 53.42%(156/292)in the young age group and 14.89%(46/309)in the advanced age group. In the young age group, the clinical pregnancy rate in high, normal and low AMH subgroups was 54.97%(94/171), 56.38%(53/94)and 33.33%(9/27), respectively, with no significant difference(P=0.09). In the advanced age group, the clinical pregnancy rate in high, normal and low AMH subgroups was 35.71%(15/42), 21.10%(23/109)and 5.06%(8/158), respectively. A strong correlation was observed between AMH and natural conception rate(P<0.05). The ROC curve showed that AMH had certain predictive value for natural reproductive potential in the advanced age group(AUCAMH=0.74). Conclusion Serum level of AMH is a promising predictor for fertility in advanced age women, but not in young women.
    A case of syndromic neurodevelopmental disorder caused by heterozygous mutation in EBF3
    LIU Na, LIU Qiji, MOU Kai, CHENG Cuiyun
    Journal of Shandong University (Health Sciences). 2020, 58(4):  105-109.  doi:10.6040/j.issn.1671-7554.0.2019.1529
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    Objective To explore the genetic basis of an infant with global developmenfal delay, mental retardation,hypotonia and ataxia. Methods The clinical phenotypes of the infant were analyzed. Peripheral blood samples were collected from the infant and his parents. The infant blood sample underwent G-banding chromosome analysis and SNP-array. The infant and his parents’ blood samples underwent whole exome sequencing. The pathogenicity of mutation sites was analyzed with bioinformatics. Results The G-band chromosome analysis and SNP-array of the infant showed no pathogenic mutation. The whole exome sequencing revealed that there was a heterozygous mutation of EBF3 c.626G>A(p.Arg209Gln)in the infant, which was validated by Sanger sequencing, but the parents had no such mutation. Conclusion The heterozygous mutation of EBF3 c.626G>A(p.Arg209Gln)probably underlies the disorder in the infant, which has not been reported in China.
    Correlation between valproic acid exposure and cancer risk in epileptic population
    WANG Zhendong, DING Wenwen, FENG Zhihui
    Journal of Shandong University (Health Sciences). 2020, 58(4):  110-117.  doi:10.6040/j.issn.1671-7554.0.2019.1280
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    Objective To explore the relationship between valproic acid(VPA)exposure and cancer risk in epileptic population. Methods Patients with epilepsy from 2012 to 2017 were collected from Shandong Multi-Center Healthcare Big-Data. Total incidence of cancer in VPA exposed and unexposed groups were analyzed, and the relative risk(RR)was calculated. The Hazard ratio(HR)was analyzed with Cox model. Correlations between cancer risk and duration of VPA exposure(D)and prescription dose of VPA exposure(P)were analyzed. Results A total of 3 107 people with epilepsy were collected, including 1 233 VPA exposed and 1 788 unexposed. Cancer was detected in 27 and 23 cases in the exposed and unexposed groups, respectively, and the total incidence of cancer was 9.68/1 000(6.03-13.33/1 000)person/year, and 5.70/1 000(3.37-8.03/1000)person/year, respectively. After exposures to carbamazepine, phenobarbital and phenytoin were excluded, the total incidence of cancer in VPA exposed and unexposed group was 4.95/1 000(0.10-9.80/1 000)person/year, and 5.25/1 000(2.15-8.35/1 000)person/year, respectively. After age was adjusted, the RR was 0.79(0.26-2.40), P=0.681. After Cox model was adjusted, HR was 0.80(0.25-2.53), P=0.702. For population with high VPA exposure(D≥100 and P≥10), the incidence of cancer significantly decreased with the increase of duration of exposure(P=0.031). After grouping based on the median duration of VPA exposure, the adjusted HR was 0.59(0.22-1.59), P=0.301. After grouping based on the median of the prescription dose of VPA, the adjusted HR was 0.93(0.35-2.47), P=0.890. Conclusion VPA is not associated with a significant reduction in cancer risk.