Iodine check results in edible salt in Suzhou in 2017-2021 / 公共卫生与预防医学

Objective To understand the quality status of salt iodine monitoring results at the county level and checking results at the city level from 2017 to 2021 in Suzhou，and to provide a scientific basis for the development of iodine deficiency disease（IDD）prevention and control strategies and measures.  Methods During the past five years, Suzhou CDC randomly selected 15 samples of 300 monitored salt samples from each county/district CDC each year for spot checks. The data were processed by comparative analysis of relative error and grouped data t test.  Results In the conformity of iodized salt and non-iodized salt, the sample monitoring results of some counties/districts were non-iodized salt, while the city-level test results were iodized salt. In the conformity of iodized salt and seaweed iodized salt (or enhanced salt), the sample monitoring results of county/district level were iodized salt, while the test results at the city level were seaweed iodized salt (or enhanced salt). The non-conformity was relatively concentrated in some county/district laboratories, and the total amount of non-conformity tended to increase year by year. The total number of samples with relative error of >20% between the county/district and city-level results was the least in 2021, with 6, and the most in 2018, with 25. The number of samples with relative error of >30% between the county/district and city-level results was the least in 2017 being 0, while there were 12 samples in 2018, fluctuating within a small range in the past three years. The t-test results of grouped data showed that the average value of the checking results at the city level was generally higher than the monitoring results at the county level. There were 21 pairs of data with no statistical significance (P>0.05) and 29 pairs of data with statistical significance (P<0.05) between the results at the county/district level and at the city level. Among them, there were 7 counties/districts whose sample monitoring results were not significantly different from the city-level test results in 2020, while there were 9 counties/districts whose monitoring results were statistically different from the city-level test results in 2021.  Conclusion  The data analysis results show that the monitoring data of iodized salt in Suzhou is basically reliable and accurate, but there still exist some problems. Therefore, in the future work it is necessary to strengthen the monitoring system of IDD, increase training efforts, continuously monitor and check the quality of iodized salt to provide a scientific basis for effective prevention and control of IDD.

Effect of Suanzaoren Tang Combined with Ziwu Liuzhu Acupuncture on Vertebral Artery Hemodynamics， Inflammatory Cytokines， and Neurotrophic Factors in Patients with Cervical Insomnia / 中国实验方剂学杂志

ObjectiveTo explore the effect of Suanzaoren Tang combined with Ziwu Liuzhu acupuncture on the vertebral artery hemodynamics， inflammatory cytokines， and neurotrophic factors in the patients with cervical insomnia with syndrome of deficiency of both heart and spleen. MethodThe random number table method was employed to assign 164 patients with cervical insomnia with syndrome of deficiency of both heart and spleen treated in the First Clinical Medical School of Guangzhou University of Chinese Medicine from January 2018 to June 2021 into a control group and an observation group. The control group was orally administrated with 1-2 mg estazolam tablets before bed for 4 weeks， and the observation group with Suanzaoren Tang combined with Ziwu Liuzhu acupuncture for 4 weeks. The therapeutic efficacy and safety were observed. The Pittsburgh Sleep Quality Index （PSQI） score， polysomnography monitoring results， hemodynamics parameters of vertebral artery， and serum levels of inflammatory cytokines and neurotrophic factors were compared before and after treatment. ResultExcept 4 dropouts， the remaining 160 patients were included in this study， with 80 patients in each group. The observation group had higher total effective rate than the control group ［92.50% （74/80） vs. 80.00% （64/80）， χ2=5.270， P<0.05］. Compared with that before treatment， the therapies in both groups decreased the PSQI score， sleep latency time， awakening time， awakening times， serum levels of interleukin-1β （IL-1β）， C-reactive protein （CRP）， and tumor necrosis factor-α （TNF-α） （P<0.01）. Meanwhile， they increased the proportion of rapid-eye-movement （REM） sleep， the diastolic blood flow velocity （Vd）， systolic blood flow velocity （Vs）， and mean blood flow velocity （MFV） of vertebral artery， as well as the serum levels of brain-derived neurotrophic factor （BDNF） and glial cell-derived neurotrophic factor （GDNF） （P<0.05， P<0.01）. Moreover， the observation group had lower PSQI score， sleep latency time， awakening time， awakening times， and serum IL-1β， CRP， and TNF-α levels （P<0.01） and higher proportion of REM sleep， Vd， Vs， MFV of vertebral artery， and serum BDNF and GDNF levels （P<0.05， P<0.01） than the control group. ConclusionZiwu Liuzhu acupuncture combined with Suanzaoren Tang can improve blood circulation of vertebral artery， reduce the serum levels of inflammatory cytokine， and increase the serum levels of neurotrophic factors to improve the sleep quality of the patients with cervical insomnia with syndrome of deficiency of both heart and spleen.

Effect of Suanzaoren Tang Combined with Ziwu Liuzhu Acupuncture on Vertebral Artery Hemodynamics， Inflammatory Cytokines， and Neurotrophic Factors in Patients with Cervical Insomnia / 中国实验方剂学杂志

ObjectiveTo explore the effect of Suanzaoren Tang combined with Ziwu Liuzhu acupuncture on the vertebral artery hemodynamics， inflammatory cytokines， and neurotrophic factors in the patients with cervical insomnia with syndrome of deficiency of both heart and spleen. MethodThe random number table method was employed to assign 164 patients with cervical insomnia with syndrome of deficiency of both heart and spleen treated in the First Clinical Medical School of Guangzhou University of Chinese Medicine from January 2018 to June 2021 into a control group and an observation group. The control group was orally administrated with 1-2 mg estazolam tablets before bed for 4 weeks， and the observation group with Suanzaoren Tang combined with Ziwu Liuzhu acupuncture for 4 weeks. The therapeutic efficacy and safety were observed. The Pittsburgh Sleep Quality Index （PSQI） score， polysomnography monitoring results， hemodynamics parameters of vertebral artery， and serum levels of inflammatory cytokines and neurotrophic factors were compared before and after treatment. ResultExcept 4 dropouts， the remaining 160 patients were included in this study， with 80 patients in each group. The observation group had higher total effective rate than the control group ［92.50% （74/80） vs. 80.00% （64/80）， χ2=5.270， P<0.05］. Compared with that before treatment， the therapies in both groups decreased the PSQI score， sleep latency time， awakening time， awakening times， serum levels of interleukin-1β （IL-1β）， C-reactive protein （CRP）， and tumor necrosis factor-α （TNF-α） （P<0.01）. Meanwhile， they increased the proportion of rapid-eye-movement （REM） sleep， the diastolic blood flow velocity （Vd）， systolic blood flow velocity （Vs）， and mean blood flow velocity （MFV） of vertebral artery， as well as the serum levels of brain-derived neurotrophic factor （BDNF） and glial cell-derived neurotrophic factor （GDNF） （P<0.05， P<0.01）. Moreover， the observation group had lower PSQI score， sleep latency time， awakening time， awakening times， and serum IL-1β， CRP， and TNF-α levels （P<0.01） and higher proportion of REM sleep， Vd， Vs， MFV of vertebral artery， and serum BDNF and GDNF levels （P<0.05， P<0.01） than the control group. ConclusionZiwu Liuzhu acupuncture combined with Suanzaoren Tang can improve blood circulation of vertebral artery， reduce the serum levels of inflammatory cytokine， and increase the serum levels of neurotrophic factors to improve the sleep quality of the patients with cervical insomnia with syndrome of deficiency of both heart and spleen.

Research on batch-to-batch quality control of compound Danshen extract based on physical characterization and multivariate statistical analysis / 中国中药杂志

Physical attributes of Chinese herbal extracts are determined by their chemical components, and the physical and chemical attributes jointly affect the preparation process performance and the final product quality. Therefore, in order to improve the quality control of Chinese herbal extracts, we should comprehensively study the batch-to-batch consistency of physical and chemical attributes as well as the correlations between them. This paper first explored the physical attributes affecting the preparation process performance of the compound Danshen extract and developed a method for characterizing the texture attributes. With such main chemical components as water, phenolic acids, saponins, and saccharides and texture, rheology, and other physical attributes taken into consideration, the batch-to-batch quality fluctuation of products from different production lines and time was analyzed by principal components analysis(PCA). Finally, the correlation and partial least squares(PLS) analysis was conducted, and the regression equation was established. The fitting result of the PLS model for dynamic viscosity was satisfying(R~2Y=0.857, Q~2=0.793), suggesting that the chemical components could be adjusted by the component transfer rate in the extraction process, the impurity removal rate in the alcohol precipitation process, and the water retention rate of the concentration process to meet the control of the extract dynamic viscosity. This study clarified the correlations between physical and chemical attributes of the compound Danshen extract and established a method for controlling its physical attributes based on process regulation, which would provide reference for improving the quality control of Chinese herbal extracts.

Impact of COVID-19 on chest CT scan frequency in a general hospital / 中国辐射卫生

@#<b>Objective</b> To explore the effect of coronavirus disease 2019 (COVID-19) on the frequency of chest CT scan. <b>Methods</b> A retrospective study was conducted to extract information on the number of outpatient, emergency, and inpatient visits and patients who had chest CT imaging examination from January 1 to December 31, 2020 and in the same period in 2019 through the hospital’s medical data platform for analysis, and the chi-square test was used to analyze whether the difference in the proportion of patients who had chest CT imaging examination between 2019 and 2020 was statistically significant. <b>Results</b> The proportion of outpatients and emergency patients with chest CT examination was significantly higher in 2020 than in 2019 (2.48% <i>vs</i> 1.47%, <i>χ</i>² = 581.7, <i>P</i> < 0.000). The proportion of inpatients who underwent chest CT examination was significantly higher in 2020 than in 2019 (35.47% <i>vs</i> 28.01%, <i>χ</i>² = 182.0, <i>P</i> < 0.000). <b>Conclusion</b> Under the COVID-19 epidemic, the proportion of chest CT examination in this hospital in 2020 shows a significant upward trend compared with the same period in 2019, which will increase the collective dose due to medical exposure, and the hospital should pay attention to the determination of the legitimacy of chest CT scan.

Analysis of skin manifestations in 50 children with inflammatory bowel disease / 中华皮肤科杂志

Objective:To analyze skin manifestations of pediatric inflammatory bowel disease (IBD) .Methods:Children with IBD were collected from pediatric wards in Peking University Third Hospital from January 2010 to January 2022, and their skin manifestations were retrospectively analyzed.Results:A total of 50 children with IBD were included, including 27 with Crohn′s disease and 23 with ulcerative colitis. Twenty-five (50%) patients had skin manifestations, including specific skin manifestations in 11 (22%) and relevant skin manifestations in 11 (22%) . Specific skin manifestations included cutaneous perianal Crohn′s disease in 2 cases, and anal fistula and/or perianal abscess in 9 cases; relevant skin manifestations included erythema nodosum in 5 cases, aphthous stomatitis in 3 cases, psoriasis in 1 case, polyarteritis nodosa in 1 case, and Henoch-Sch?nlein purpura in 1 case. Compared with the ulcerative colitis group, the Crohn′s disease group was more prone to suffer from specific skin manifestations and relevant skin manifestations, and there were significant differences in the prevalence of specific and relevant skin manifestations between the two groups (both P < 0.05) . Of the 27 children with Crohn′s disease, 19 (70%) had one or more skin manifestations, 2 of whom successively presented with 4 different skin manifestations. One child with Crohn′s disease and 1 with ulcerative colitis had 3 different skin manifestations in different periods. The fecal calprotectin level was elevated in all children with skin manifestations, and in 12 (48%) children without skin manifestations. The skin lesions of 5 children were improved or subsided after dose adjustment (1 case) or switch (4 cases) of biological agents. Conclusions:Half of the children with IBD have skin manifestations, and children with Crohn′s disease are more prone to have specific and relevant skin manifestations. Different skin manifestations could be observed in the same child in different periods. Multidisciplinary teamwork is conducive to the overall control of this disease.

Environmental controllable factors of adolescents depression / 中国学校卫生

Abstract@#Depressive symptoms among adolescents are common in the world, depressive symptoms could increase the risk of physical and mental health, interpersonal relationship, social adaption in later life. Hence, the prevention of depressive symptom among adolescents have been valued by scholars and plenty studies have been conducted from the perspective of gene, environment and the inter connectivity between gene and environment. The environment adolescents faced can be divided into family environment, school environment and social environment. This study reviews the controllable factors in three environments and provides references for the prevention and control of depressive symptoms among adolescents.

Effect of information-motivation-behavior skills on adherence of continuous positive airway pressure therapy in patients with obstructive sleep apnea hypopnea syndrome / 中南大学学报(医学版)

OBJECTIVES@#Obstructive sleep apnea hypopnea syndrome (OSAHS) is a common disease that seriously affects health. Continuous positive airway pressure (CPAP) therapy is the preferred treatment for moderate-to-severe OSAHS patients. However, poor adherence to CPAP is a major obstacle in the treatment of OSAHS. Information-motivation-behavioral (IMB) skills, as a kind of mature technology to change the behavior, has been used in various health areas to improve treatment adherence. This study aims to explore the effects of the IMB skills intervention on CPAP adherence in OSAHS patients.@*METHODS@#Patients who were primary diagnosed with moderate-to-severe OSAHS were randomly divided into the IMB group (n=62) and the control group (n=58). The patients in the IMB group received CPAP therapy and the IMB skills intervention for 4 weeks. The patients in the control group received CPAP therapy and a usual health care provided by a registered nurse. We collected the baseline data of the general information, including age, sex, body mass index (BMI), the Epworth Sleepiness Scale (ESS) score, the Hospital Anxiety and Depression Scale (HADS) score, and indicators about disease severity [apnea-hypopnea index (AHI), percentage of time with arterial oxygen saturation SaO2<90% (T90), average SaO2, lowest SaO2, arousal index]. After CPAP titration, we collected CPAP therapy-relevant parameters (optimal pressure, maximum leakage, average leakage, 95% leakage, and residual AHI), score of satisfaction and acceptance of CPAP therapy, and score of willingness to continue CPAP therapy. After 4 weeks treatment, we collected the ESS score, HADS score, CPAP therapy-relevant parameters, effective CPAP therapy time per night, CPAP therapy days within 4 weeks, CPAP adherence rate, score of satisfaction and acceptance of CPAP therapy, and score of willingness to continue CPAP therapy. Visual analog scale (VAS) of 0-5 was used to evaluate the satisfaction and acceptance of IMB intervention measures in the IMB group.@*RESULTS@#There were no significant differences in the baseline level of demographic parameters, ESS score, HADS score, disease severity, and CPAP therapy related parameters between the IMB group and the control group (all P>0.05). There were no significant differences in score of willingness to continue CPAP therapy, as well as score of satisfaction and acceptance of CPAP therapy after CPAP titration between the IMB group and the control group (both P>0.05). After 4 weeks treatment, the ESS score, HADS score, maximum leakage, average leakage, and 95% leakage of the IMB group were significantly decreased, while the score of satisfaction and acceptance of CPAP therapy and willingness to continue CPAP therapy of the IMB group were significantly increased (all P<0.05); while the above indexes in the control group were not different before and after 4 weeks treatment (all P<0.05). Compared with the control group, the ESS score, HADS score, maximum leakage, average leakage, and 95% leakage of the IMB group after 4 weeks treatment were significantly lower (all P<0.05); the effective CPAP therapy time, CPAP therapy days within 4 weeks, score of satisfaction and acceptance of CPAP therapy, score of willingness to continue CPAP therapy of the IMB group were significantly higher (all P<0.05). The rate of CPAP therapy adherence in 4 weeks of the IMB group was significantly higher than that of the control group (90.3% vs 62.1%, P<0.05). The VAS of overall satisfaction with IMB skills intervention measures was 4.46±0.35.@*CONCLUSIONS@#IMB skills intervention measures can effectively improve the adherence of CPAP therapy in OSAHS patients, and is suitable for clinical promotion.

Tracing investigation and analysis of a Clostridium botulinum food poisoning incident in Bayingolin Mongolian Autonomous Prefecture, Xinjiang / 中华预防医学杂志

To analyze a suspected case of Clostridium botulinum food poisoning in Bayingolin Mongolian Autonomous Prefecture, Xinjiang and to help validating the diagnosis and providing technical support for clinical treatment. The basic information and clinical manifestations of food poisoning cases were investigated by using the epidemiological method of food safety accidents. The botulinum toxin genes in the samples were detected by real-time PCR and inoculation of KM mouse. The enriched bacteria were further purified and validated. PFGE and cluster analysis were performed on five isolates. Clostridium botulinum type A was detected in two homemade fermented bean samples and stool lavage fluid samples of three patients from enriched samples by toxin test and real-time PCR, and were further validated after isolation of Clostridium botulinum. PFGE showed 100% homology among five isolates. Five isolates of bacteria isolated from the stool lavage fluid of three patients and two homemade fermented bean curd were identified as the same source through PFGE. The cause of this food poisoning cases is food pollution of Clostridium botulinum type A.

Color Doppler ultrasonography and clinical characteristics of benign lymphoepithelial disease of lacrimal gland / 中华超声影像学杂志

Objective:To summarize the clinical manifestations and color Doppler ultrasonography of benign lymphoepithelial disease (BLL) in lacrimal gland, so as to improve the diagnostic accuracy of lacrimal BLL.Methods:Clinical manifestations and color Doppler flow imaging (CDFI) features of lacrimal BLL in 16 patients (2 males and 14 females, with 31 lesions) who visited the Second Hospital of Hebei Medical University from November 2014 to August 2019 were retrospectively analyzed.Results:The performance for lesions in patients with duration less than 3 months was scattered in irregular low echo, lesion blood flow signals within the rich (Adler Ⅱ level), pathologic examination results showed more lymphocytes were seen in the lacrimal matrix, and the myoepithelium of the lacrimal duct grew to form the epithelium-myocutaneous island. The ultrasonic feasures in patients with course of 3-6 months were in multiple categories such as circular low echo, "honeycomb" change, CDFI showed lesions with a lot of blood flow signals (Adler Ⅲ level), the pathological examination results indicated that there were a large number of lymphocytes and epithelial-musculocutaneous islands in the lacrimal matrix, and the lymphocytes were significantly increased compared with patients with the course of disease less than 3 months. The ultrasound results in patients with a course of more than 6 months showed lesions in multiple categories such as circular low echo, and large low echo, greater than 3 mm in diameter, CDFI showed lesions within the same large amounts of blood flow signals (Adler Ⅲ level), the pathological examination results were consistent with the course of 3 to 6 months. One patient had positive tuberculin test and 11 had higher IgG4 than normal.The number of lymphocytes increased with the prolongation of disease course.Conclusions:With the expert knowledge of color Doppler ultrasonographic characteristics of lacrimal gland BLL and with the serum IgG4 level helps to improve the accuracy of ultrasonic diagnosis.

Circ_0001666 promotes the proliferation and inhibits apoptosis of non-small cell lung cancer cells by targeting the miR-330-5p/HMGA2 axis / 生理学报

Many studies have shown that circular RNAs (circRNAs) play a key regulatory role in the whole biological process of tumors. The purpose of this study was to explore the biological function and molecular mechanism of circ_0001666 in non-small cell lung cancer (NSCLC), so as to provide new targets for the diagnosis and treatment of NSCLC. Gene expression profiles were downloaded from Gene Expression Omnibus (GEO, GSE101586) and the differential genes were obtained by using GEO2R analysis. The quantitative real time polymerase chain reaction (qRT-PCR) was used to detect the expression level of circ_0001666 in NSCLC cells. Cell counting kit-8 (CCK-8) and Annexin V-FITC apoptosis detection kit were respectively used to assess the cell proliferation and apoptosis, where circ_0001666 was knockdown in NSCLC cells. The targeted relationship among mircoRNA 330-5p (miR-330-5p), circ_0001666, and high mobility group A2 protein (HMGA2) was verified by bioinformatics prediction, dual-luciferase reporter gene, RNA immunoprecipitation (RIP) and RNA pull down assay. The results showed that the expression of circ_0001666 in NSCLC cells was significantly up-regulated than that in normal lung epithelial cells. Circ_0001666 knockdown reduced the cell viability and promoted the apoptosis of NSCLC cells, which could be reversed by miR-330-5p inhibitors. MiR-330-5p is the downstream target of circ_0001666 and can be adsorbed by circ_0001666. HMGA2 is a target gene of miR-330-5p, which can be indirectly regulated by circ_0001666. The results suggest that circ_0001666 promotes the proliferation and inhibits apoptosis of NSCLC cells via miR-330-5p/HMGA2 axis.

Iodine nutritional status of 8-10 year-old school-age children after the implementation of new salt iodine standard in Suzhou / 公共卫生与预防医学

Objective To explore the iodine nutritional status among school-age children within 5 years of implementation of the new salt iodine standard in Suzhou, and to provide a basis for dynamically adjusting the salt iodization strategy. Methods The observation period (2012-2019) was divided into two sub-periods: the adjustment transition period (2012-2014) and the adjustment completion period (2015-2019). According to the “Jiangsu Iodine Deficiency Disease Surveillance Program”, household salt samples and urine samples of school-age children aged 8 to 10 years were collected to detect the content of salt iodine and urine iodine. The coverage rate of iodized salt, qualified iodized salt consumption rate, and the median urinary iodine were determined. Results Totally 2 893 and 9 132 salt samples were collected in the adjustment transition and adjustment completion periods, with the median salt iodine content being 26.50 and 23.20 mg/kg, respectively. The iodized salt coverage rates were 97.03% (2 807/2 893) and 91.01% (2 633/2 893), and the consumption rates of qualified iodized salt were 97.25% (8 881/9 132) and 93.93% (8 578/9 132), respectively, in the two periods. The differences between the coverage rate of iodized salt and the consumption rate of qualified iodized salt between the two periods were statistically significant (χ2=38.465, P2 trend= 17.528, P<0.01). During the adjustment transition period, the median urinary iodine content of school-age children in Suzhou was 215.61 μg/L , and the proportion of urine iodine value <50 μg/L was 1.5%, while during the adjustment completion period the median urinary iodine and proportion of urine iodine value <50 μg/L were 192.60 μg/L and 2.40%, respectively. The difference in urine iodine between the two periods was statistically significant (Z=-9.918, P<0.01); Conclusions Five years after the implementation of the new salt iodization standard, the iodine nutritional level of school-age children in Suzhou was generally at an appropriate level. However, there was no significant changes in iodine nutritional levels in some areas after the adjustment of the new standard, suggesting that surveillance on iodine nutrition should be continuously consolidated in the future.

Efficacy of Hormone Combined with Cyclophosphamide in the Treatment of Connective Tissue Disease-associated Interstitial Lung Disease and Analysis of Its Influential Factors / 中国药房

OBJECTIVE：To investigate the efficacy of hormone combined with cyclophosphamide in the treatment of connective tissue disease-associated interstitial lung disease （CTD-ILD）and to analyze its influential factors. METHODS ：100 patients diagnosed as CTD-ILD in our hospital from Jan. 2018 to Jan. 2019 were randomly divided into observation group and control group ，with 50 cases in each group. Control group was treated with Compound cyclophosphamide tablets ，50 mg each time，3-4 times each day. Observation group was additionally treated with Prednisone acetate tablets ，10 mg each time ，3-4 times each day ，on the basis of control group. Treatment courses of 2 groups lasted for 6 months. The clinical efficacy ，the occurrence of ADR，lung function before and after treatment ，the levels of peripheral IL- 6，CRP and PCT and quality of life （SGRQ score ）were compared between 2 groups. According to the therapeutic efficacy ，all patients were divided into effective group and ineffective group. The related factors influencing the clinical efficacy of CTD-ILD were analyzed by univariate and multivariate Logistic regression analysis. RESULTS ：After treatment ，total response rate ，FVC，FEV1 and DLCO of observation group were significantly higher than those of control group ，while SGRQ score ，levels of IL- 6，CRP and PCT in peripheral blood were significantly lower than control group （P＜0.05）. There was no significant difference in the total incidence of ADR between 2 groups（P＞0.05）. Univariate analysis showed that there were no significant differences in gender ，age，past medical history and CTD type between effective group and ineffective group （P＞0.05）. However ，there were statistical significancant differences in the distribution of different levels of IL- 6，CRP and PCT in peripheral blood between 2 groups（P＜0.05）. Multivariate Logistic regression analysis showed that IL- 6 was an independent risk factor for therapeutic efficacy of combined therapy [OR （95％CI）＝ 4.537（3.668，10.352），P＝0.002]. CONCLUSIONS ：Hormone combined with cyclophosphamide can significantly improve the therapeutic efficacy of CTD-ILD patients ，improve their lung function and quality of life ，and reduce the expression level of inflammatory factors. The level of IL- 6 is an independent risk factor affecting the efficacy of the treatment ，and its changes should be paid close attention to during the treatment.

Study on the Protective Effects of Butein on Oxidative Stress Injury of PC 12 Cell and Its Effects on Mitochondrial Function / 中国药房

OBJECTIVE：To study the protective effects of butein on oxidative stress injury of PC12 cell and its effects on mitochondrial function. METHODS：Rats PC12 cells were divided into normal control group，model group，solvent control group（1 ‰ dimethyl sulfoxide），butein high，medium and low concentration groups（2，1，0.5 μmol/L）. The latter 4 groups were given relevant reagent/medicine for intervention；24 h later，other groups were given 100 mU/mL glucose oxidase to induce oxidant stress model except for normal control group. After 4 h culture，cell survival rate，apoptosis rate，the levels or activities of ROS，MDA，SOD，CAT，GSH-Px，ATP，IL-1β and TNF-α as well as the change of MMP were detected. RESULTS：Compared with normal control group，cell survival rate，the levels or activities of SOD，CAT，GSH-Px and ATP were all decreased significantly，and apoptotic rate，the content of ROS，the levels of MDA，IL-1β and TNF-α were all increased significantly（P＜0.05 or P＜0.01），while the MMP was decreased significantly. Compared with model group，above indexes of solvent control group had no significant change （P＞0.05），cell survival rates，the levels or activities of SOD （except for medium and low concentration groups），CAT，GSH-Px（except for medium and low concentration groups），ATP（except for low concentration group）were increased significantly in butein high，medium and low concentration groups，while apoptotic rates，the content of ROS，the levels of MDA，IL-1 β and TNF-α were decreased significantly（P＜0.05 or P＜0.01），while the MMP were increased significantly. CONCLUSIONS：Butein can increase the antioxidant enzyme activity， stabilize mitochondrial function， inhibit oxidative stress and inflammationthus， increase energy generation inhibiting neuronal cell apoptosis ultimately exerting a neuroprotective effect.

Targeting context-cpecific dependent transcriptional addiction in bone and soft tissue sarcoma: advance and future / 中华骨科杂志

High heterogeneity of bone and soft tissue sarcomas limits the development of molecular-targeted therapy but in turn provides an important clue to inner genomic and regulomic diversityof driver pathways that define molecular subtypes associated with patient outcome. The importance of malignant biological behaviorshave been re-emphasized, since tumor arises from the collaborative interplay of oncogenic events acquired the tissue-specifying gene expression programs to survive cancer cells and benefit multi-step tumorigenesis and neoplastic progression. Differ from most epithelial carcinomas that harbor clinically operative mutation sites, sarcomas are characterizedpredominantly by chromosomal alterations and copy-number changes, with low mutation loads. Sarcoma-specific fusion proteins produced by chromosomal translocations are common significant transcription factors, driving tumor cells exhibit an absolute dependence on "transcription addiction". It has been confirmed that cyclin-dependent kinase-7 (CDK7) plays a key role in transcriptional regulation such as cell growth and proliferation, invasion and metastasis. The dysregulated transcriptional regulation acquired during tumor development strictly depends on the essential regulation of CDK7. Targeted inhibition of CDK7 is an effective strategy to suppress tumors, especially those with specific genomic backgrounds (oncogene or fusion-gene driven) which are highly sensitive to CDK7 intervention. Emerging studies have shown that CDK7 is closely related to the malignant behaviors of bone and soft tissue sarcomas, and is expected to become a potential target for the treatment of sarcoma.

Comparative study on differences of resin-containing drugs in Dracaena from different appearance based on HS-GC-MS and chemometrics / 中国中药杂志

Resin-containing drugs in Dracaena from four different appearances were analyzed by headspace sampling-gas chromatography-mass spectrometry(HS-GC-MS) metabolomics technique and hierarchical clustering analysis(HCA) chemometrics method. This study was to analyze differential volatile components in resin-containing drugs in Dracaena from different appearance and metabolic pathways. The results of partial least squares discriminant analysis(PLS-DA) and HCA analysis indicated that there was little difference in volatile components between fiber-rich sample and hollow cork cambium sample, however, the volatile components in the two samples compared with whole body resin-containing sample and resin-secreting aggregated sample had a large metabolic difference. Twenty differential metabolites were screened by VIP and P values of PLS-DA. The content of these differential metabolites was significantly higher in whole body resin-containing sample and resin-secreting aggregated sample than in fiber-rich sample and hollow cork cambium sample. Sixteen significant metabolic pathways were obtained through enrichment analysis(P<0.05), mainly involved in terpenoids biosynthesis and phenylpropanoid metabolism. This result provided a reference for further study of resin formation mechanism of resin-containing drugs in Dracaena from different appearances. At the same time, it also provided a reference for establishing a multi-index quality evaluation system.

Antiviral therapy for coronavirus disease 2019 / 中南大学学报(医学版)

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the cause of the outbreak of coronavirus disease 2019 in Wuhan City, China. The SARS-CoV-2 is genetically similar to the coronavirus derived from bat. The SARS-CoV-2, the SARS-CoV and the Middle East respiratory syndrome coronavirus (MERS-CoV) all belong to beta coronavirus. Since the outbreak of the coronavirus disease 2019, effective antiviral drugs have become a hot issue in the world. Very little about SARS-CoV-2 is known and there is no precedent for treatment. The National Health Commission has repeatedly revised the diagnosis and treatment guide for the coronavirus disease 2019. The latest guide is "New Coronary Virus-Infected Pneumonia Diagnosis and Treatment Plan (Seventh Trial Version)"(short for Seventh Version of Diagnosis and Treatment Plan). But the use of antiviral drugs is still on trial and no rigorous clinical trials data is available. Hot anti-SARS-CoV-2 drugs include interferon α, ribavirin, lopinavir/ritonavir, chloroquine phosphate, abidol, as well as hydroxychloroquine sulfate and remdesivir. But the later 2 drugs aren't mentioned in the Seventh Version of Diagnosis and Treatment Plan.

Imported falciparum malaria in Suzhou City: a report of two cases in 2019 / 中国血吸虫病防治杂志

The demographic features, epidemiology, diagnosis and treatment of two cases with falciparum malaria imported into Suzhou City in 2019 were reported. These findings indicate a risk of imported malaria in visitors besides high prevalence in migrant labors, and much attention should be paid to children that are at a high risk of infections.

Forming Process of Gynandrium-like in Amomum villosum / 中国实验方剂学杂志

Objective::To study the forming process of the gynandrium-like in Amomum villosum. Method::The flowerets were divided into 8 growth periods from 0.5 cm in length to the day after flowering. Fresh sample were anatomized, and paraffin sectioning was performed on the flowerets. The height of anther chamber, the pollen sac angles, the width of anther gap, the diameter of style, the filament-labellum angle (α), and the filament-anther angle (β) were determined. Result::The angle of the pollen sac had no obvious change before flowering, but decreased from 32° to 17° after flowering. The width of anther gap increased to 0.29 mm in the 5th growth period, while the diameter of style was 0.32 mm in the same period, the ratio of them was 92%. Compared with the day before flowering, the angle α decreased from 83° to 42° during flowering, and the angle β decreased from 186° to 147°. In the filament, the abaxial side had 1 to 5 layers of cells more than the adaxial side. In the style, it was found that the adaxial side had 1 to 6 layers of cells more than the abaxial side. Conclusion::The asymmetry of the cell structure at abaxial and adaxial sides of the filament and style is the basis of the movement. In the 5th growth period, the width of anther gap increased almost to the size of style, so the style was able to slide in. When blossoming, the pollen sacs quickly squeezed to the gap in middle, and the entrance for style to access was blocked. Therefore, the style had to remain in the gap of the pollen sacs. Meanwhile, angles α and β drastically decreased, resulting in the stamen sandwiched the pistil and bending together toward the labellum. The gynandrium-like structure was formed.

Pharmacological Analysis of Xuanfei Huazhuo Prescription in Treatment of Coronavirus Disease-2019 / 中国实验方剂学杂志

Objective:The targets and signaling pathways of Xuanfei Huazhuo prescription (XFHZP) for the treatment of coronavirus disease-2019 (COVID-19) were explored, and its possible action mechanisms were described through network pharmacology and basic analysis of modern pharmacology. Method:The compounds and targets in XFHZP were collected through TCMSP and BATMAN-TCM databases. The targets of COVID-19 were studied by GeneCards, NCBI and CTD databases. The PPI network was constructed through STRING database. The networks of "herb-meridian" and "traditional Chinese medicines-compounds-targets-disease" were generated by Cytoscape 3.7.0. Then, Kyoto Encyclopedia of Genes and Genomes（KEGG） analysis and Gene Ontology（GO） analysis were made for shared targets through the Omicshare platform. In addition, the disease targets of multiple organ injury, immune injury and severe acute respiratory syndrome (SARS) were retrieved and then mapped with XFHZP. The ratio of intersection targets to XFHZP's targets was calculated. Result:XFHZP has 10 traditional Chinese medicines in total, including 6 medicines with the meridian tropism to lung, 5 medicines with the meridian tropism to the spleen and 5 medicines with the meridian tropism to the stomach. There were 409 compounds and 2 271 targets. There were 8 same inflammatory factors in targets between XFHZP and COVID-19, and each inflammatory factor corresponded to multiple compounds. XFHZP and COVID-19 had 135 intersection targets, and 36 key targets were screened out. A total of 172 signaling pathways were screened out through KEGG signal pathway enrichment (P<0.05). There were 4 000 biological processes, 254 cell components, and 408 molecular functions (P<0.05) according to GO analysis. XFHZP had many common targets with various organ damage targets and immune damage targets, with the ratio of about 7.6%-97.8%. XFHZP had 173 intersection targets with SARS. Conclusion:XFHZP may treat COVID-19 through anti-inflammatory, organ protecting and immune effects. It will provide a certain theoretical basis for the development of drugs for COVID-19.