Factors associated with malnutrition in infants with congenital heart disease within one year after surgery / 中华儿科杂志

Objective: To explore the risk factors of malnutrition in infants with congenital heart disease within one year after surgery. Methods: This retrospective cohort study selected 502 infants with congenital heart disease who underwent surgical treatment in Guangzhou Women and Children's Medical Center from February 2018 to January 2019. Their basic information and clinical data were analyzed, and their nutrition status after the surgery was followed up by questionnaire survey. Weight-for-age Z score (WAZ)≤-2 one year after operation was defined as malnutrition group, and WAZ>-2 was non-malnutrition group. The perioperative indicators and complementary food advancement were compared between the two groups by chi-square test, t-test, and Kruskal-Wallis test. The risk factors of malnutrition were analyzed by Logistic regression. Results: A total of 502 infants were selected, including 301 males and 201 females, with the age of 4.1 (2.0, 6.8) months. There were 90 cases in malnutrition group and 412 cases in non-malnutrition group. The body length and weight at birth in the malnutrition group were lower than those in the non-malnutrition group ((47.8±3.8) vs. (49.3±2.5) cm, (2.7±0.6) vs.(3.0±0.5) kg, both P<0.001). The proportion of paternal high school education or above and the proportion of family per capita income of 5 000 yuan or above in the malnutrition group were lower than those in the non-malnutrition group ((18.9% (17/90) vs. 30.8% (127/412), 18.9% (17/90) vs. 33.7% (139/412), both P<0.05). Compared to the non-malnutrition group, the proportion of complex congenital heart disease in the malnutrition group was higher (62.2% (56/90) vs. 47.3% (195/412), P<0.05). The postoperative mechanical ventilation time, postoperative intensive care unit (ICU) stay time, postoperative hospital stay, total length of ICU stay and total hospital stay in the malnutrition group were significantly longer than those in non-malnutrition group (all P<0.05). The proportion of egg and fish supplementation over 2 times/week within one year after the surgery was also lower in the malnutrition group (both P<0.05). Logistic regression analysis showed that mother's weight at delivery (OR=0.95,95%CI 0.91-0.99), the pre-operative WAZ≤-2 (OR=6.04, 95%CI 3.13-11.65), the complexity of the cardiac disease (OR=2.23, 95%CI 1.22-4.06), the hospital stay after the surgery over 14 days (OR=2.61, 95%CI 1.30-5.26), the types of complementary food<4 (OR=2.57, 95%CI 1.39-4.76), and the frequency of meat and fish<2 times/week (OR=2.11, 95%CI 1.13-3.93) were the risk factors associated with malnutrition within one year after the surgery. Conclusion: Mother's weight at delivery pre-operative nutritional status, complexity of cardiac disease, postoperative hospital stay, types of daily supplements and frequency of fish are risk factors associated with malnutrition within one year after surgery in children with congenital heart disease.

Association of circulating levels of soluble PD-1, PD-1 gene polymorphisms with HBV infection and HBV infection-associated hepatocellular carcinoma / 中华预防医学杂志

Objective: To investigate the association of circulating sPD-1 level and PD-1 gene polymorphisms with HBV infection and HBV infection-associated hepatocellular carcinoma. Methods: A case-control study was conducted. A total of 237 chronic HBV infection cases and 138 HBV infection-associated hepatocellular carcinoma in the Department of Infectious Diseases of the First Hospital of Shanxi Medical University from 2018 to 2021 were selected as the case group. About 250 individuals who visited a hospital physical examination center for routine physical examination during the same period were selected as the control group. Plasma sPD-1 levels were measured by using an ELISA kit and genotyping was performed by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. The association of sPD-1 levels and PD-1 polymorphisms with HBV infection as well as HBV infection-associated hepatocellular carcinoma was analyzed by using logistic regression models after adjusting for age, sex, alcohol consumption, smoking, ALT and AST levels. The sPD-1 level and PD-1 polymorphisms were independent variables, and HBV infection was the dependent variable. Results: The age of 237 chronic HBV infections, 138 HBV infection-related liver cancer case subjects and 250 control subjects in the study was (49.1±10.8), (51.9±12.7) and (50.7±11.9) years, respectively. Multivariate logistic regression model analysis showed that with a 1 pg/ml increase in sPD-1 level, the OR (95%CI) values for the risk of incident HBV infection cases and HBV hepatocellular carcinoma cases were 1.92 (1.68-2.19) and 2.02 (1.69-2.40). For rs2227981, compared with the CC genotype, the TT genotype had a lower risk of HBV infection and liver cancer associated with HBV infection, with OR (95%CI) values of 0.45 (0.22-0.91) and 0.35 (0.14-0.91). For rs2227982, compared with the CC genotype, the CT and TT genotypes also had a lower risk of HBV infection [OR (95%CI) values of 0.72 (0.53-0.97) and 0.57 (0.35-0.93)] and HBV infection-related liver cancer [OR (95%CI) values of 0.64 (0.45-0.92) and 0.52 (0.29-0.93)]. Conclusions: Plasma sPD-1 levels and PD-1 gene polymorphisms are associated with HBV infection and HBV infection-associated hepatocellular carcinoma.

Research on the formulation and revision of radiological parameters in the "Standards for Drinking Water Quality（GB5749-2022）" in China / 中华预防医学杂志

The radioactive safety of drinking water has attracted increasing public concern. The newly issued Standards for Drinking Water Quality (GB5749-2022) in China has revised the radiological parameters. This article provides an overview of the main sources, levels of radionuclides in drinking water, and summarized the individual doses criterion and adverse health effects associated with exposure of the public to radionuclides from drinking-water. It analyzes and discusses the relevant revision content of radiological parameters, including the guidance values for screening gross α and gross β, subtracting the contribution of potassium-40 from gross β activity when the gross β activity concentration exceeds the screening level, and the basis for establishing the limit values of reference indices uranium and radium-226. Specific implementation and evaluation suggestions are also proposed.

Systematic analysis of MYB transcription factors related to the geniposide biosynthesis in Gardenia jasminoides Ellis based on whole genome / 药学学报

MYB transcription factors are involved in the regulation of various secondary metabolites biosynthesis. Gardenia jasminoides Ellis is the commonly used Chinese herbal medicine, and its main active ingredient is geniposide. Here, leaves and flower buds at different developmental stages of G. jasminoides were used to explore MYB transcription factors related to geniposide biosynthesis based on genome and transcriptome analysis. Transcriptome data analysis showed that, different from the expression of the common pathway genes for terpenoid biosynthesis, the expression level of genes in the specific pathway of geniposide biosynthesis was significantly higher in flower buds than in leaves, which was the same as the organ accumulation pattern of this component. And the promoter regions of geraniol synthase, iridoid synthase and geniposidic acid methyltransferase involved in the specific pathway all contained multiple MYB-binding sites. A total of 105 MYB transcription factors were obtained by annotating the coding genes of G. jasminoides, which were divided into 68 1R-MYB, 33 R2R3-MYB, 3 3R-MYB and 1 atypical MYB transcription factor according to the number of conserved domain. Based on the analysis of phylogenetic tree and quantitative real-time PCR, three candidate MYB transcription factors related to geniposide biosynthesis were selected, including potential positive regulation factor GjMYB23 and negative regulation factors GjMYB31 and GjMYB73. The results of this study will lay a foundation for searching the regulation of geniposide biosynthesis and further analysis of the quality formation mechanism of G. jasminoides, so as to promote the breeding of excellent varieties of G. jasminoides.

Efficacy comparison among high risk factors questionnaire and Asia-Pacific colorectal screening score and their combinations with fecal immunochemical test in screening advanced colorectal tumor / 中华胃肠外科杂志

Objective: To investigate the effects of high risk factors questionnaire (HRFQ), Asia-Pacific colorectal screening (APCS) score and their combinations with fecal immunochemical test (FIT) in screening advanced colorectal neoplasia, in order to provide an evidence for further optimization of cancer screening program. Methods: A retrospective cohort study method was used to summarize and analyze the results of colorectal tumor screening in Jiashan County, Zhejiang Province from March 2017 to July 2018. Those with severe diseases that were not suitable for colonoscopy and those with mental and behavioral abnormalities who can not cooperate with the screening were excluded. Those who met any one or more of the followings in the HRFQ questionnaire were classified as high-risk people of HRFQ: (1) first-degree relatives with a history of colorectal cancer; (2) subjects with a history of cancer or any other malignant tumor; (3) subjects with a history of intestinal polyps; (4) those with two or more of the followings: chronic constipation (constipation lasted for more than 2 months per year in the past two years), chronic diarrhea (diarrhea lasted for more than 3 months in the past two years, and the duration of each episode was more than one week), mucus and bloody stools, history of adverse life events (occurring within the past 20 years and causing greater trauma or distress to the subject after the event), history of chronic appendicitis or appendectomy, history of chronic biliary disease or cholecystectomy. In this study, those who were assessed as high risk by HRFQ were recorded as "HRFQ (+)", and those who were not at high risk were recorded as "HRFQ (-)". The APCS questionnaire provided risk scores based on 4 risk factors including age, gender, family history and smoking: (1) age: 2 points for 50-69 years old, 3 points for 70 years old and above; (2) gender: 1 point for male, 0 point for women; (3) family history: 2 points for first-degree relatives suffering from colorectal cancer; (4) smoking: 1 point for current or past smoking, 0 point for non-smokers. The population was divided into low-risk (0-1 point), intermediate-risk (2-3 points), and high-risk (4-7 points). Those who were assessed as high risk by APCS were recorded as "APCS (+)", and those with intermediate and low risk were recorded as "APCS (-)". The hemoglobin threshold for a positive FIT was set to 100 μg/L. Those who were assessed as high risk by APCS with positive FIT were recorded as "APCS+FIT (+)". Those who were assessed as high risk by APCS with negative FIT, those who were assessed by APCS as low-middle risk with positive FIT, and those who were assessed by APCS as low-middle with negative FIT were all recorded as "APCS+FIT(-)". Observation indicators in this study were as follows: (1) the screening compliance rate of the cohort and the detection of advanced colorectal tumors; (2) positive predictive value, negative predictive value, sensitivity and specificity of HRFQ and APCS and their combination with FIT for screening advanced colorectal tumors; (3) comparison of the detection rate between HRFQ and APCS questionnaire for different colorectal lesions. Using SPSS 21.0 software, the receiver operating characteristic (ROC) curve was drawn to evaluate the clinical value of HRFQ and APCS combined with FIT in screening advanced colorectal tumors. Results: From 2017 to 2018 in Jiashan County, a total of 53 268 target subjects were screened, and 42 093 people actually completed the questionnaire, with a compliance rate of 79.02%. A total of 8145 cases underwent colonoscopy. A total of 3607 cases among HRFQ positive population (5320 cases) underwent colonoscopy, and the colonoscopy compliance rate was 67. 80%; 8 cases were diagnosed with colorectal cancer and 88 cases were advanced colorectal adenoma. A total of 2977 cases among APCS positive population (11 942 cases) underwent colonoscopy, and the colonoscopy compliance rate was 24.93%; 17 cases were diagnosed with colorectal cancer and 148 cases were advanced colorectal adenoma. The positive rate of HRFQ screening was lower than that of APCS [12.6% (5320/42 093) vs. 28.4% (11 942/42 093), χ2=3195. 547, P<0.001]. In the FIT positive population (6223 cases), a total of 4894 cases underwent colonoscopy, and the colonoscopy compliance rate was 78.64%; 34 cases were diagnosed with colorectal cancer and 224 cases were advanced adenoma. The positive predictive values of HRFQ and APCS and their combination with FIT for screening advanced colorectal tumors were 2.67%, 5.54%, 5.44%, and 8.56%; negative predictive values were 94.89%, 96.85%, 96.11% and 96.99%; sensitivity was 29.27%, 50.30%, 12.20 % and 39.02%; specificity was 55.09%, 64.03%, 91.11% and 82.51%, respectively. The ROC curves constructed by HRFQ, APCS, FIT, HRFQ+FIT and APCS+FIT indicated that APCS+FIT presented the highest efficacy in screening advanced colorectal tumors (AUC: 0.608, 95%CI: 0.574-0.642). The comparison of the detection rates of different colorectal lesions between HRFQ and APCS questionnaires showed that there were no significant differences in detection rate of inflammatory polyps and hyperplastic polyps between the two questionnaires (both P>0.05). However, as compared to HRFQ questionnaire, APCS questionnaire had higher detection rates in non-advanced adenomas [26.10% (777/2977) vs. 19.43% (701/3607), χ2=51.228, P<0.001], advanced adenoma [4.97% (148/2977) vs. 2.44% (88/3607), χ2=30.249, P<0.001] and colorectal cancer [0.57% (17 /2977) vs. 0.22% (8/3607), χ2=5.259, P=0.022]. Conclusions: APCS has a higher detection rate of advanced colorectal tumors than HRFQ. APCS combined with FIT can further improve the effectiveness of advanced colorectal tumor screening.

A study on the rapidly non-destructive detection method of Huoxiang Zhengqi oral liquid using near infrared spectroscopy / 药学学报

Based on near infrared spectroscopy and high performance liquid chromatography, this paper established the regression relationship between near infrared spectroscopy and index component content of Huoxiang Zhengqi oral liquid, so as to realize the rapid detection of index component content based on near infrared spectroscopy. Magnolol, honokiol and hesperidin were used as the quality indexes of Huoxiang Zhengqi oral liquid. After using the first derivative and normalization pretreatment method, characteristic variables were screened by CARS, and the correction model was finally established by partial least-squares regression (PLSR) method. The method accuracy was evaluated with the external validation, and the prediction results were tested for significance. The results indicated that when the near infrared spectrum was scanned through the bottle, the model's correlation coefficients of prediction (Rp) were higher than 0.99, the root mean square errors of the prediction models (RMSEP) were all less than 0.008 4, and the relative standard errors of prediction set (RSEP) were all less than 2.83%. There was no significant difference in the predicted results between these two kinds of model. The models established in the non-destructive way have good performance and high prediction accuracy. The rapid and nondestructive way has application value in the quality control of Huoxiang Zhengqi oral liquid.

Application of near infrared spectroscopy to predict contents of various lactones in chromatographic process of Ginkgo Folium / 中国中药杂志

This study established a method for rapid quantification of terpene lactone, bilobalide, ginkgolide C, ginkgolide A and ginkgolide B in the chromatographic process of Ginkgo Folium based on near infrared spectroscopy(NIRS). The effects of competitive adaptive reweighting sampling(CARS), random frog(RF), and synergy interval partial least squares(siPLS) on the performance of partial least squares regression(PLSR) model were compared to the reference values measured by HPLC. Among them, the correlation coefficients of prediction(Rp) of validation sets of terpene lactone, bilobalide, and ginkgolide C were all higher than 0.98, and the relative standard errors of prediction(RSEPs) were 5.87%, 6.90% and 6.63%, respectively. Aiming at ginkgolide A and ginkgolide B with relatively low content, the genetic algorithm joint extreme learning machine(GA-ELM) was used to establish the optimized quantitative analysis model. Compared with CARS-PLSR model, the CARS-GA-ELM models of ginkgolide A and ginkgolide B exhibited a reduction in RSEP from 15.65% to 8.52% and from 21.28% to 10.84%, respectively, which met the needs of quantitative ana-lysis. It has been proved that NIRS can be used for the rapid detection of various lactone components in the chromatographic process of Ginkgo Folium.

Research progress and prospects for the use of plant metabolomics in quality evaluation of traditional Chinese medicinal materials / 药学学报

The quality of traditional Chinese medicine has a direct impact on the effectiveness and safety of its use, and is the premise necessary to ensure the healthy development of the traditional Chinese medicine industry. Comprehensive and accurate control and evaluation of the quality of medicinal materials is of great significance to the traditional Chinese medicine industry, but the complexity and dynamics of the chemical composition of medicinal materials makes their quality evaluation a challenge. Plant metabolomics provides an integrated and comprehensive analysis that is consistent with the holistic approach of traditional Chinese medicine. Chemical information therein promotes the establishment of a traceable system and provides new ideas and methods for the quality evaluation of medicinal materials. Plant metabolomics in the quality evaluation of medicinal materials is gradually increasing, and the core is the screening and identification of differential metabolites or specific marker compounds by means of stoichiometry. This study focused on the main factors that affect the quality of medicinal materials, such as origin, environmental adversity, varieties, harvest time, commercial specification and TCM processing. We describe the research progress in plant metabolomics combined with chemometrics analysis for the quality control and evaluation of medicinal materials, summarize existing problems, identify trends, and propose future research directions. Metabolomics plays an increasingly important role in the quality evaluation of medicinal materials, but the absolute qualitative and quantitative information of metabolomics needs to be further developed, and a single 'omics' technique is not sufficient for an in-depth analysis of medicinal value. In the future, standardization of plant metabolomics methods and a more complete database should be actively promoted, and plant metabolomics should be integrated into quality marker exploration. Plant metabolomics will need to be integrated with other 'omics' methods to improve the quality and evaluation system of medicinal materials.

From rural practice to national strategy for colorectal cancer screening in China--Mr. Zheng Shu who is a pioneer and practitioner / 中华胃肠外科杂志

Haining City and Jiashan County in Zhejiang Province are the first areas to carry out colorectal cancer screening in China, which started in the early 1970s and has been going on for more than 40 years. Meanwhile, Haining and Jiashan have also become the first batch of National Demonstration Bases for Early Diagnosis and Treatment of Colorectal Cancer. In the past 40 years, owing to Professor Zheng Shu who is brave and innovative, with an indomitable spirit, as well as the unremitting efforts and active exploration of all the team members, colorectal cancer screening which was unknown by the public and implemented with difficulties, has gradually been widely accepted and benefited the population. Today, remarkable achievements have been fulfilled in the colorectal cancer screening of Haining and Jiashan which has become the pioneer power in promoting the progress of colorectal cancer prevention and control in China and has certain influence both on China and the world. Meanwhile, a set of colorectal cancer screening strategies suitable for China has been explored and further promoted to be used nationwide, which is of great significance to the prevention and control of colorectal cancer in China. Looking forward to the future, the prevention and control of colorectal cancer in China is still difficult. We will continue to give full play to our existing advantages, not forget our original intention, move forward, explore innovation, and create greater glories!

Compatibility characteristics of Bufei Yishen formula Ⅲ in regulating chronic obstructive pulmonary disease mucus hypersecretion / 中华危重病急救医学

Objective:To evaluate the compatibility laws of effective-component compatibility of Bufei Yishen formula Ⅲ (ECC-BYFⅢ) in regulating mucus hypersecretion of chronic obstructive pulmonary disease (COPD).Methods:According to the efficacy of the original Chinese medicine, the components of ECC-BYFⅢ were divided into four categories: Buqi (Ginsenoside Rh1+Astragaloside), Bushen (Icariin), Huatan (Nobiletin), and Huoxue (Paeonol). The four categories were divided into 14 groups based on the method of mathematical permutation. ① The rats were divided into control group, model group, ECC-BYFⅢ, and different components compatibility groups according to the random number table, totaling 17 groups. COPD rat model in stable phase was established by cigarette smoke exposure combined with repeated bacterial infections. The corresponding drugs were given by gavage at the 9th week of modeling, and the samples were collected at the end of the 16th week. The levels of matrix metalloproteinase-9 (MMP-9) and tissue inhibitors of metalloproteinase 1 (TIMP-1) in serum and bronchoalveolar lavage fluid (BALF), and the levels of mucin (MUC) 5AC in lung tissue and BALF were detected by enzyme linked immunosorbent assay (ELISA). ② Human lung epithelial cells BEAS-2B were divided into blank group, model group, and different components compatibility groups. Hypoxia-induced mucus hypersecretion model of human lung epithelial cells BEAS-2B was established 4 hours after corresponding drug pretreatment. The mRNA expressions of MUC5AC, MUC5B, and MUC1 were detected by quantitative polymerase chain reaction (PCR). The mucus secretion indexes of rats and BEAS-2B cells were evaluated by Region (R) value comprehensive evaluation method.Results:① Compared with the control group, MMP-9 in serum and BALF from the model group were significantly increased, the level of TIMP-1 was significantly decreased, and MUC5AC in lung tissue and BALF were significantly increased. The results of R value comprehensive evaluation showed that except for the Buqi and Bushen groups, ECC-BYFⅢ and other components compatibility groups significantly corrected mucus hypersecretion in COPD rats, ECC-BYFⅢ, Bushen Quxie, Fuzheng Huatan, and Quxie groups were much better (R values were 2.15±0.42, 2.11±0.23, 2.16±0.23 and 2.16±0.55, respectively), compared with the model group (R value: 3.00±0.00), the differences were statistically significant (all P < 0.05). ② Compared with the blank group, the mRNA expressions of MUC5AC, MUC5B, and MUC1 increased in the model group. But different components compatibility groups had no significant effects on the mucus secretion of BEAS-2B cells. ③ The comprehensive evaluation results of R value about each in vivo and in vitro index showed that ECC-BYFⅢ, Huoxue, Quxie, Bushen Huoxue, Fuzheng Huatan, Buqi Quxie groups significantly corrected the mucus hypersecretion (R values were 2.30±0.43, 2.33±0.44, 2.12±0.68, 2.27±0.64, 2.24±0.27 and 2.29±0.47, respectively), compared with the model group (R value: 3.00±0.00), the difference was statistically significant (all P < 0.01). The order was: Quxie > Fuzheng Huatan > Bushen Huoxue > Buqi Quxie > ECC-BYFⅢ > Huoxue. Conclusions:Different components compatibility of ECC-BYFⅢ had different effects on COPD mucus secretion. The components containing Huatan (Nobiletin) or Huoxue (Paeonol) showed a better inhibitory effect on mucus secretion.

Research progress of continuous manufacturing and process knowledge system of traditional Chinese medicine / 中国中药杂志

In the past few years, continuous manufacturing(CM) has been put forward by the FDA. Pharmaceutical enterprises are encouraged to promote the implementation of CM, which has become a hot research direction of pharmaceutical technology. In February 2019, the FDA issued a draft guideline for the implementation of CM, which greatly promoted the development of CM and provided reference for continuous manufacturing of traditional Chinese medicine(TCM). The production process of TCM is a complex system. With the innovation of production equipment and the promotion of automation and informatization of TCM production, the exis-ting policies, regulations and traditional production control capacity are difficult to meet the market demand for high-quality TCM pro-ducts. In this paper, we reviewed the new technologies and methods of quality control in accordance with the characteristics of TCM production by referring to modern manufacturing technology, information technology and quality control technology. Based on the "QbD" theory and "PAT" technology, process knowledge system(PKS), an advanced control strategy, was proposed to provide a reference for the implementation of CM in TCM production.

Ecological Suitability Regionalization of Ziziphus jujuba / 中国实验方剂学杂志

Objective:To analyze the main factors affecting the <italic>Ziziphus jujuba</italic> distribution and expand the understanding of its distribution and the corresponding influencing factors by comparing the distribution sites of <italic>Z. jujuba</italic> predicted by models with those recorded in the literature. Method:More than 200 distribution sites of <italic>Z. jujuba</italic> accompanied by 55 environmental factors were obtained from literature and specimen review. The environmental factors that affect the distribution of <italic>Z. jujuba</italic> were explored by maximum entropy （MaxEnt） model， and the potential distribution areas of <italic>Z. jujuba</italic> in China were analyzed by ArcGIS， followed by the verification of the main environmental factors using receiver-operating characteristic （ROC） curve and Jackknife method. Result:The area under the curve （AUC） values for the test data and training data were both greater than 0.9， which perfectly satisfied the standard， indicating that the research results were accurate and reliable. Conclusion:The annual average temperature， the average temperature in May， the average temperature in the warmest season， vegetation type， soil type， average temperature in June， average temperature in September， and average temperature in August are proved to be the main environmental factors affecting the distribution of <italic>Z. jujuba</italic>， which can be found almost all over China， except for Heilongjiang and Tibet. <italic>Z. jujuba</italic> is most suitable to be planted in southeastern Sichuan， Chongqing， southern Gansu， Ningxia， most areas of central Shaanxi， eastern and southwestern Shanxi， Henan， eastern and northern Hubei， northern and eastern Anhui， Shandong， Hebei， Beijing， Tianjin， western Liaoning， and Zhejiang. As revealed by literature review， the most suitable growing areas of <italic>Z. jujuba</italic> are southeastern Sichuan， central Shaanxi， southwestern Shanxi， western and northern Henan， Shandong， and southwestern and eastern Hebei.

Distribution of Epimedium sagittatum and its research progress on quality characteristics / 中草药

To promote the rational development and utilization of Epimedium sagittatum, and to propose the utilization strategies and future research suggestions. The distribution was illuminated based on the examination of herbarium specimens and our field investigation. At the same time, the quality characteristics of different harvest time, different parts and different producing areas were summarized according to the literature review and our previous researches. In terms of the distribution, E. sagittatum is a widely distributed species in Epimedium. However, there were many errors in the identification of herbarium specimens. At least 13 taxa were wrongly identified as E. sagittatum. The distribution of E. sagittatum was not as extensive as previously recorded in the literature. Although the distribution of E. sagittatum has been recorded in 12 provinces and in Chongqing Municipality, it was mainly distributed in Anhui, Jiangxi, Hunan and Hubei provinces, and the resources in each region were not abundant. In terms of quality characteristics, there were great differences in both composition and contents of the active components among different germplasm. Some of the germplasm in Hunan, Hubei and Sichuan provinces were excellent. However, the stability and homogeneity were not ideal. Therefore, the utilization of E. sagittatum should depend on the quality characteristics. It was found that there were great differences among populations and which were closely related to the genetic basis. The effect of physiological ecology on quality and its mechanism, as well as the molecular mechanism of quality formation should be paid more attention in the future.

Ethical Issues of Medical Artificial Intelligence / 中国医学科学院学报

As an important branch of artificial intelligence,the emerging medical artificial intelligence(MAI)is facing many ethical issues.MAI may offer the optimal diagnosis and treatment for patients but may also bring adverse effects on society and human beings.This article discusses the ethical problems caused by MAI and elucidates its development in a direction that meets ethical principles and requirements.

Anxiolytic Effect of Increased NREM Sleep after Acute Social Defeat Stress in Mice / 神经科学通报·英文版

Social defeat stress (SDS) plays a major role in the pathogenesis of psychiatric disorders like anxiety and depression. Sleep is generally considered to involve recovery of the brain from prior experience during wakefulness and is altered after acute SDS. However, the effect of acute SDS on sleep/wake behavior in mice varies between studies. In addition, whether sleep changes in response to stress contribute to anxiety is not well established. Here, we first investigated the effects of acute SDS on sleep/wake states in the active period in mice. Our results showed that total sleep time (time in rapid eye-movement [REM] and non-REM [NREM] sleep) increased in the active period after acute SDS. NREM sleep increased mainly during the first 3 h after SDS, while REM sleep increased at a later time. Then, we demonstrated that the increased NREM sleep had an anxiolytic benefit in acute SDS. Mice deprived of sleep for 1 h or 3 h after acute SDS remained in a highly anxious state, while in mice with ad libitum sleep the anxiety rapidly faded away. Altogether, our findings suggest an anxiolytic effect of NREM sleep, and indicate a potential therapeutic strategy for anxiety.

Multidisciplinary Prevention and Control of Cervical Cancer:Application and Prospects / 中国医学科学院学报

Cervical cancer is the second most common malignant tumor in women worldwide.The burden of cervical cancer is particularly heavy in less developed countries as the malignancy brings huge pain to the patients and their family members and causes huge losses to social development and global health.However,cervical cancer is a preventable and curable disease.While screening and human papillomavirus vaccination in developed countries have remarkably lowered the incidence and mortality of cervical cancer,there is still a far way to go to achieve the prevention and treatment of this disease.The multidisciplinary prevention and control programs slightly differ in different countries due to diverse economic and health conditions.The general principle is to vaccinate the young females and to implement a comprehensive strategy including human papillomavirus vaccine vaccination,screening,early diagnosis,and early treatment in adults.

Comparative study of three cell morphological analysis methods on in vitro micronucleus assay / 上海预防医学

Objective To investigate the feasibility of genotoxicity assessment for chemicals via flow cytometry (FCM) and high-content screening (HCS) based on high-throughput screening in vitro micronucleus assays. Methods In reference to the methodology of OECD TG487, the typical positive controls, cyclophosphamide (CP) and mitomycin C (MMC), were selected.And no serum MEM medium was treated as negative control.Dose range of CP was 5-20 mg/L and MMC was 0.25-1.0 mg/L.CHL cells were treated with three concentrations of each chemical for 4 h.High-throughput screening in vitro micronucleus assays based on FCM and HCS were established.The results of the frequency of micronuclei were compared to traditional cytokinesis blocking micronucleus assay in each group with or without metabolic activation. Results The frequencies of micronuclei induced by CP and MMC (ascending rank) were separately 1.9%, 7.6%, 10.4% and 5.9%, 11.4%, 16.7%, which were obtained by conventional microscopic scoring.The frequencies of micronuclei induced by CP and MMC (ascending rank) were separately 2.8%, 2.6%, 7.8% and 3.2%, 3.7%, 5.1%, which were obtained by flow cytometry screening.The frequencies of micronuclei induced by CP and MMC (ascending rank) were separately2.8%, 6.2%, 9.1% and 7.9%, 10.1%, 10.2%, which were obtained by high-content screening.Compared with negative controls, the differences of the results were statistically significant(P < 0.05), and there was a dose-response relationship. Conclusion In this study, the results of high-throughput screening assays of FCM and HCS are in accordance to the results of traditional cytokinesis blocking micronucleus assay, indicating that high-throughput screening in vitro micronucleus assays could detect micronucleus formation automatically and improve the efficiency.Therefore, the method could provide data support for using high-throughput screening in vitro micronucleus assays into genotoxicity assessment of chemicals.

Comparative study of three cell morphological analysis methods on in vitro micronucleus assay / 上海预防医学

Objective To investigate the feasibility of genotoxicity assessment for chemicals via flow cytometry (FCM) and high-content screening (HCS) based on high-throughput screening in vitro micronucleus assays. Methods In reference to the methodology of OECD TG487, the typical positive controls, cyclophosphamide (CP) and mitomycin C (MMC), were selected.And no serum MEM medium was treated as negative control.Dose range of CP was 5-20 mg/L and MMC was 0.25-1.0 mg/L.CHL cells were treated with three concentrations of each chemical for 4 h.High-throughput screening in vitro micronucleus assays based on FCM and HCS were established.The results of the frequency of micronuclei were compared to traditional cytokinesis blocking micronucleus assay in each group with or without metabolic activation. Results The frequencies of micronuclei induced by CP and MMC (ascending rank) were separately 1.9%, 7.6%, 10.4% and 5.9%, 11.4%, 16.7%, which were obtained by conventional microscopic scoring.The frequencies of micronuclei induced by CP and MMC (ascending rank) were separately 2.8%, 2.6%, 7.8% and 3.2%, 3.7%, 5.1%, which were obtained by flow cytometry screening.The frequencies of micronuclei induced by CP and MMC (ascending rank) were separately2.8%, 6.2%, 9.1% and 7.9%, 10.1%, 10.2%, which were obtained by high-content screening.Compared with negative controls, the differences of the results were statistically significant(P < 0.05), and there was a dose-response relationship. Conclusion In this study, the results of high-throughput screening assays of FCM and HCS are in accordance to the results of traditional cytokinesis blocking micronucleus assay, indicating that high-throughput screening in vitro micronucleus assays could detect micronucleus formation automatically and improve the efficiency.Therefore, the method could provide data support for using high-throughput screening in vitro micronucleus assays into genotoxicity assessment of chemicals.

Study on CYP2E1 gene polymorphism and the relationship between methylation level of its promoter region and liver injury induced by anti-tuberculosis drugs in Mongolian tuberculosis patients in Inner Mongolia / 医学研究生学报

ObjectiveThere are few studies on whether the occurrence of anti-tuberculosis drug-induced liver injury (ADIH) is associated with the polymorphism of CYP2E gene and methylation level. This study aims to CYP2E1 gene polymorphism and the relationship between the methylation level of the promoter region and ADIH in Mongolian tuberculosis (TB) patients.Methods A total of 135 Mongolian TB patients who received standardized treatment at the Tuberculosis Research Institute of Tongliao City, Inner Mongolia from November 2015 to June 2018 were selected. According to the ADIH criteria, TB patients with liver injury were selected as the ADIH group (n=45), and TB patients without liver injury were matched as the control group based on a ratio of 1∶2 (n=90). DNA extraction and polymerase chain reaction (PCR) were performed to amplify the CYP2E1 gene to determine the CYP2E1 rs2031920 genotype, and to analyze the CYP2E1 gene polymorphism and relationship between ADIH and promoter methylation level.Results There were no significant differences in the distribution of CYP2E1 rs2031920 genotype, C1 and C2 gene frequencies between the ADIH group and the control group (P>0.05). The overall methylation level in the promoter region of CYP2E1 gene in ADIH group (0.711±0.085) was significantly lower than that of the control group (0.759±0.062). Results of Logistic regression showed that the overall methylation level in the promoter region of CYP2E1 gene was the influencing factor for the occurrence of ADIH (P<0.005). For each 0.1 unit increase of methylation level, the risk of ADIH occurrence reduced by 0.388 times, and the OR (95% CI) value was 0.388 (between 0.204 and 0.739).Conclusion The overall methylation level in the promoter region of CYP2E1 gene was reduced in Mongolian ADIH patients, but the polymorphism of CYP2E1 gene was not related to the occurrence of ADIH. These results suggested that CYP2E1 methylation could be applied to the prevention and treatment of ADIH in patients with tuberculosis.

Study on CYP2E1 gene polymorphism and the relationship between methylation level of its promoter region and liver injury induced by anti-tuberculosis drugs in Mongolian tuberculosis patients in Inner Mongolia / 医学研究生学报

ObjectiveThere are few studies on whether the occurrence of anti-tuberculosis drug-induced liver injury (ADIH) is associated with the polymorphism of CYP2E gene and methylation level. This study aims to CYP2E1 gene polymorphism and the relationship between the methylation level of the promoter region and ADIH in Mongolian tuberculosis (TB) patients.Methods A total of 135 Mongolian TB patients who received standardized treatment at the Tuberculosis Research Institute of Tongliao City, Inner Mongolia from November 2015 to June 2018 were selected. According to the ADIH criteria, TB patients with liver injury were selected as the ADIH group (n=45), and TB patients without liver injury were matched as the control group based on a ratio of 1∶2 (n=90). DNA extraction and polymerase chain reaction (PCR) were performed to amplify the CYP2E1 gene to determine the CYP2E1 rs2031920 genotype, and to analyze the CYP2E1 gene polymorphism and relationship between ADIH and promoter methylation level.Results There were no significant differences in the distribution of CYP2E1 rs2031920 genotype, C1 and C2 gene frequencies between the ADIH group and the control group (P>0.05). The overall methylation level in the promoter region of CYP2E1 gene in ADIH group (0.711±0.085) was significantly lower than that of the control group (0.759±0.062). Results of Logistic regression showed that the overall methylation level in the promoter region of CYP2E1 gene was the influencing factor for the occurrence of ADIH (P<0.005). For each 0.1 unit increase of methylation level, the risk of ADIH occurrence reduced by 0.388 times, and the OR (95% CI) value was 0.388 (between 0.204 and 0.739).Conclusion The overall methylation level in the promoter region of CYP2E1 gene was reduced in Mongolian ADIH patients, but the polymorphism of CYP2E1 gene was not related to the occurrence of ADIH. These results suggested that CYP2E1 methylation could be applied to the prevention and treatment of ADIH in patients with tuberculosis.