Research progress on global health competency and its models / 中华预防医学杂志

At present, the research on Global Health Competencies is mainly conducted in the field of the establishment of competency models and application of indicators. This review summarizes the research progress of the Global Health Competency and its models, and focuses on cutting-edge research from the aspects of target audience, purpose, content, classical model, methods and future development. The competency model is suggested to be adjusted and updated according to the practices of different countries and regions. The research and funding of the competency model in the field of public health is suggested to be strengthened, and the global health and diplomacy are suggested to be combined to enrich and improve the competency model. Finally, this review aims to promote Global Health Competencies research in China, especially to improve the global health talent training system and relevant policies in further research.

Research progress on global health competency and its models / 中华预防医学杂志

At present, the research on Global Health Competencies is mainly conducted in the field of the establishment of competency models and application of indicators. This review summarizes the research progress of the Global Health Competency and its models, and focuses on cutting-edge research from the aspects of target audience, purpose, content, classical model, methods and future development. The competency model is suggested to be adjusted and updated according to the practices of different countries and regions. The research and funding of the competency model in the field of public health is suggested to be strengthened, and the global health and diplomacy are suggested to be combined to enrich and improve the competency model. Finally, this review aims to promote Global Health Competencies research in China, especially to improve the global health talent training system and relevant policies in further research.

Effects of roxadustat versus recombination human erythropoietin on coronary artery calcification in maintenance hemodialysis patients / 中国药房

OBJECTIVE To compare the effects of roxadustat and recombination human erythropoietin （rHuEPO） on coronary artery calcification in maintenance hemodialysis （MHD） patients. METHODS In retrospective analysis， MHD patients prescribed roxadustat in the Blood Purification Center of the First Affiliated Hospital of Chongqing Medical University from April 2019 to June 2021 were selected as the ROX group （56 patients）， and MHD patients prescribed rHuEPO during the same period were selected as the EPO group （60 patients）， and follow-up observation was conducted for 12 months. The differences in laboratory index， coronary artery calcification score （CACS）， and cardiac ultrasound parameters before and after treatment as well as the occurrence of cardiac and cerebrovascular adverse events during follow-up period were compared between the two groups. RESULTS There was no statistical difference in CACS between the two groups before and after treatment （P＞0.05）； but the difference of CACS in the ROX group was significantly lower than the EPO group （P＜0.05）. There was no statistically significant difference in cardiac ultrasound parameters and laboratory indexes between the two groups before and after treatment （P＜0.05）. The incidence of apoplexy and myocardial infarction in the ROX group was lower than that in the EPO group （P＜0.05）， and there was no statistically significant difference in the incidence of hospitalization due to heart failure between the two groups （P＞0.05）. CONCLUSIONS Compared with rHuEPO， roxadustat may have a positive effect on delaying coronary artery calcification in MHD patients and may be beneficial in reducing the incidence of myocardial infarction and apoplexy in MHD patients.

Epidemiological characteristics and serum antibody detection of a COVID-19 aggregated outbreak in vaccinated population / 中华预防医学杂志

An epidemiological investigation was conducted on a cluster epidemic of COVID-19 in the vaccinated population in Beijing in 2022, and serum samples were collected from 21 infected cases and 61 close contacts (including 20 cases with positive nucleic acid in the isolation observation period). The results of antibody detection showed that the IgM antibody of two infected persons was positive, and the IgG antibody positive rates of patients who were converted, not converted to positive and infected persons were 36.84% (7/19), 63.41% (26/41) and 71.43% (15/21), respectively. About 98.78% of patients had been vaccinated with the SARS-CoV-2 inactivated vaccine. The positive rate of IgG antibody in patients immunized with three doses of vaccine was 86.00% (43/50), which was higher than that in patients with one or two doses [16.12% (5/31)]. The antibody level of M (Q1, Q3) in patients immunized with three doses was 4.255 (2.303, 7.0375), which was higher than that in patients with one or two doses [0.500 (0.500, 0.500)] (all P values<0.001). The antibody level of patients who were vaccinated less than three months [7.335 (1.909, 7.858)] was higher than that of patients vaccinated more than three months after the last vaccination [2.125 (0.500, 4.418)] (P=0.007). The positive rate and level of IgG antibody in patients who were converted to positive after three doses were 77.78% (7/9) and 4.207 (2.216, 7.099), respectively, which were higher than those in patients who were converted after one or two doses [0 and 0.500 (0.500, 0.500)] (all P values<0.05).

Exploration of the classification of public health intervention and its implication for China / 中华预防医学杂志

Public health interventions refer to a series of organized and specific measures implemented in specific situations to achieve goals related to improving health, preventing and controlling diseases, and more. As research on intervention measures has deepened, the classification of public health interventions has gradually developed, clarifying the nature, categories and intervention targets of these measures. This typological study can help standardize the concepts of public health interventions, develop, select, and evaluate the effectiveness of intervention measures, and improve the effectiveness of public health actions. This paper reviews the main international classification models of intervention measures, analyzes and summarizes five classification methods of public health interventions, namely, based on goals, nature, objects, hierarchies, and modes of action, and introduces relevant cases. The paper proposes that China should conduct further in-depth and systematic research on public health interventions, develop evidence-based intervention measures and practices, promote the effective transformation of intervention measures and results, and facilitate the development of public health.

Exploration of the classification of public health intervention and its implication for China / 中华预防医学杂志

Public health interventions refer to a series of organized and specific measures implemented in specific situations to achieve goals related to improving health, preventing and controlling diseases, and more. As research on intervention measures has deepened, the classification of public health interventions has gradually developed, clarifying the nature, categories and intervention targets of these measures. This typological study can help standardize the concepts of public health interventions, develop, select, and evaluate the effectiveness of intervention measures, and improve the effectiveness of public health actions. This paper reviews the main international classification models of intervention measures, analyzes and summarizes five classification methods of public health interventions, namely, based on goals, nature, objects, hierarchies, and modes of action, and introduces relevant cases. The paper proposes that China should conduct further in-depth and systematic research on public health interventions, develop evidence-based intervention measures and practices, promote the effective transformation of intervention measures and results, and facilitate the development of public health.

Clinical Characteristics and Prognosis of Acute Myeloid Leukemia Patients with inv(16)/t(16;16)(p13.1;q22) and/or CBFβ-MYH11 / 中国实验血液学杂志

OBJECTIVE@#To summarize the clinical and laboratory characteristics of patients with acute myeloid leukemia (AML) with inv(16)/t(16;16) (p13.1;q22), and to analyze the risk factors affecting the prognosis of the patients.@*METHODS@#AML patients with inv(16)/t(16;16) (p13.1;q22) and/or CBFβ-MYH11+ admitted to the Department of Hematology, The First Affiliated Hospital of Soochow University from January 1, 2008 to October 30, 2019 were retrospective analyzed, the clinical and laboratory indicators, as well as treatment plans and efficacy evaluations of the patients were all recorded. Furthermore, related factors affecting the overall survival (OS) and event-free survival (EFS) of the patients were analyzed.@*RESULTS@#Among 151 AML patients with inv(16)/t(16;16) (p13.1;q22) and/or CBFβ-MYH11+, the percentage of additional chromosomal abnormalities was about 27.8%, and the most common additional chromosomal abnormality was +22 (33/151, 21.8%), followed by +8 (11/151, 7.3%). There were 112 patients with perfect NGS examination, and the result showed the most common accompanying gene mutations were KIT mutation (34/112, 30.4%) and FLT3 mutation (23/112, 20.5%). Univariate analysis showed that factors affecting EFS included: NE≤0.5×109/L (P=0.006) and combined K-RAS mutation (P=0.002); Factors affecting OS included: Age≥50 years old (P<0.001) and NE≤0.5×109/L (P=0.016). Multivariate analysis showed that NE≤0.5×109/L (P=0.019) was the risk factors affecting OS. The proportion of bone marrow eosinophilia (BME)≥10.00% (P=0.029) was the risk factors affecting EFS.@*CONCLUSION@#The prognosis for those newly diagnosed AML patients who were of advanced age, the high proportion of bone marrow eosinophils, K-RAS mutations, and agranulocytosis is poor. The treatment plans can be adjusted in the early stage to improve the prognosis of such patients.

Exploration and practice of information-based pharmaceutical care pathway of anticoagulant therapy in patients with atrial fibrillation / 中国药房

OBJECTIV E To develop the infor mation-based pharmaceutical care pathway of anticoagulant therapy in patients with atrial fibrillation and improve the efficacy and safety of treatment for them. METHODS The“anticoagulant pharmaceutical care”module was developed on the basis of medical intelligent and decision system. Patients with atrial fibrillation were taken pharmaceutical care in the whole anticoagulant treatment by evaluating the thromboembolism and bleeding risks ，pre-reviewing antithrombotic prescriptions ，monitoring efficacy and drug interactions ，and warning adverse reactions. RESULTS A total of 1 228 patients receiving anticoagulant therapy were enrolled. It was found after analysis of their doctor ’s orders that 9.27％ of the patients adjusted the improper antithrombotic therapies ，3.99％ modulated treatments according to the effects of potential drug interactions or the risk of adverse reactions ，and 70.29％ of the wrong prescriptions were intervened successfully. After the information-based pharmaceutical care ，the anticoagulation treatment rate increased from 88.73％ to 97.40％，the rate of patients ’achievements to warfarin’s international normalized ratio in hospital increased from 38.64％ to 66.67％，and the incidence of serious bleeding events decreased from 2.94％ to 0.37％ （P＜0.05）. CONCLUSIONS The information-based pharmaceutical care path of anticoagulant therapy achieved comprehensive ，efficient and accurate management of patients with atrial fibrillation ，and improved the rationality ，effectiveness and safety of anticoagulant therapy.

The National Life Science Competition for College Students assists fostering life science talents in colleges and universities / 生物工程学报

The National Life Science Competition for College Students has been held for five times, which has become the largest and most influential life science competition in China. The competition is designed to follow principles of "interest-driven, scientific exploration, process evaluation and ability improvement". The holding of the competition has effectively improved the training quality of life science talents in colleges and universities. This paper summarized the development, organization and management of the competition as well as the organizational characteristics of the competition. It may serve as a guidance for colleges and universities to organize students to participate in the competition, and improve the fostering of talents in the field of life sciences in colleges and universities nationwide.

Professor ZHU Liang-Chun's Academic Experience in Treating Unstable Carotid Plaques Based on Theory of Phlegm and Blood Stasis / 中国实验方剂学杂志

Unstable carotid plaque is an independent risk factor for serious cerebrovascular events including stroke， making it considered as an intervention target for the primary and secondary prevention of cardiovascular diseases. Professor ZHU Liang-chun is a national distinguished master of traditional Chinese medicine （TCM） who is adept at treating difficult miscellaneous diseases with insects. He believes that the unstable carotid plaque falls into the category of “vessel impediment” in TCM according to the disease location and characteristics. The core pathogenesis of unstable carotid plaque lies in asthenia in origin and sthenia in superficiality， with spleen-kidney deficiency as the root cause and combined phlegm and blood stasis as the manifestations. He has pointed out that both phlegm and blood stasis should be emphasized in the treatment. In addition to the commonly used herbs for strengthening spleen， removing stasis， and resolving phlegm， the insects with strong effects of searching wind and dredging collateral can be added as appropriate to strengthen the power of removing stasis and dredging collateral. According to the pathogenesis of this disease， he develops the Qutan Tongluo Wenbanfang， which has been confirmed by modern pharmacological research to be efficient in resisting inflammation， regulating endothelial cell functions， lowering lipids， adjusting metabolism， and improving blood circulation， thereby ameliorating the related biological processes of atherosclerosis， suppressing atherosclerosis， and stabilizing plaques. As proved by clinical practice， Qutan Tongluo Wenbanfang helps to reduce blood lipids and reduce the area of unstable carotid plaque， indicating that it deserves clinical promotion.

Effect on Treatment of Addition and Subtraction Therapy of Zhuyu Zhixuetang to Chronic Endometritis with Syndrome of Qi Deficiency and Blood Stasis / 中国实验方剂学杂志

Objective:To discuss clinical effect of Zhuyu Zhixuetang to chronic endometritis （CE） with syndrome of Qi deficiency and blood stasis and to study improvement effect to pregnancy outcome. Method:One hundred and forty-four patients were randomly divided into two groups， patients in control group were 72 cases and in observation group were 72 cases. In control group， 66 patients completed the therapy because of 4 falling off or missing visit and 2 eliminated， and in observation group， 65 patients completed the therapy because of 3 falling off or missing visit and 5 eliminated. In two groups. anti-infection treatment was gicen to patients. Patients in control group got Fuke Qianjin Pian， 6 tablets/time， 3 times/day. Patients in observation group got Zhuyu Zhixuetang， 1 dose/day. The treatment was continued for 3 months and the follow up was recorded for 6 months. Before and after treatment， changes of menstrual volume， period and cycle were recorded. And hysteroscopy and color Doppler ultrasound of vagina were made， and endometrial morphology and endometrial receptivity were evaluated ［endometrial thickness， resistance index （RI）， pulsation index （PI） and blood flow index （FI）］ were evaluated， and pathology of endometrial were tested. And scores of syndrome of Qi deficiency and blood stasis were graded， levels of interleukin-1 <italic>β</italic> （IL-1<italic> β</italic>）， IL-6 and tumor necrosis factor-<italic>α</italic> （TNF-<italic>α</italic>） and T-lymphoid subsets （CD3⁺， CD4⁺， CD8⁺） in peripheral blood were measured. Pregnancy and miscarriage were recorded and the safety was evaluated. Result:After treatment， menstrual volume， menstrual period， cycle and complete normal rate of menstruation in observation group were all higher than those in control group （<italic>P</italic><0.05）. Endometrial thickness and FI were more than those in control group （<italic>P</italic><0.01）， RI and PI were lower than RI and PI in control group （<italic>P</italic><0.01）. And compared with control group， levels of IL-1<italic>β</italic>， IL-6， TNF-<italic>α</italic> and CD8⁺were less （<italic>P</italic><0.01）. And levels of CD3⁺， CD4⁺ and CD4⁺/ CD8⁺ were higher than the data in control group （<italic>P</italic><0.01）. During 6 months follow-up， pregnancy rate in observation group was 46.97% （31/66） was higher than 27.69% （18/65） in control group （<italic>χ</italic>²=5.197， <italic>P</italic><0.05）. Total effective rate of endometrial morphology was 96.97% （64/66） higher than 86.15% （56/65） in control group （<italic>χ</italic>²=4.981， <italic>P</italic><0.05）. Total effective rate endometrial pathology was 95.45% （63/66） higher than 84.62% （55/65） in control group （<italic>χ</italic>²=4.304， <italic>P</italic><0.05）. Total effective rate of comprehensive clinical effect was 93.94% （62/66） higher than 81.54% （55/65） in control group （<italic>χ</italic>²=4.696， <italic>P</italic><0.05）. There was no adverse reactions related to traditional Chinese medicine. Conclusion:Zhuyu Zhixuetang can regulate menstruation， relieve clinical symptoms， improve endometrial morphology under hysteroscopy， regulate systemic and local immune inflammatory response， improve CP， thus improve pregnancy outcome， with better comprehensive effect and safety.

Clinical Features and Prognostic Factors of Patients with Multiple Myeloma / 中国实验血液学杂志

OBJECTIVE@#To summarize the clinical and Laboratory characteristics of patients with multiple myeloma (MM) and analyze the prognostic factors.@*METHODS@#Two hundred MM patients were retrospectively analyzed for the following parameters, including peripheral blood, bone marrow morphology, cytogenetics, clinical staging, and response to the chemotherapy in order to summarize related factors affecting overall survival (OS). The prognostic factors were also analyzed.@*RESULTS@#200 patients with MM were divided into 3 groups according to bone marrow plasma cell percentage (BMPC%) in bone marrow smears: ＜10% group (74 cases, 37.0%), 10%-50% group (75 cases, 37.5%), ＞50% group (51 cases, 25.5%). Compared with the other two groups, patients in BMPC%<10% group were characterized by lower clinical staging levels, lower rates of 13q14 deletion and t(11;14) positive, better response to chemotherapy and favorable three-year OS rate. The univariate analysis showed that prognostic factors indicating favorable outcome as evaluated by OS included age≤55 years old, BMPC%＜10%, WBC＜7.5×10@*CONCLUSION@#The clinical characteristics are different among MM patients with different BMPC% in bone marrow smears at initial diagnosis, and prognostic analysis shows that the BMPC% in bone marrow smears has an effect on OS rate. BMPC% in bone marrow smears at initial diagnosis, age, WBC, Hb, response to the fourth chemotherapy are also the main factors impacting the prognosis of patients.

Analysis on the rodents density monitoring data in Fangshan District of Beijing, 2016-2017 / 上海预防医学

Objective To understand species, population density, and seasonality of rodents in Fangshan District of Beijing and provide the information for prevention and control of rodents and rodent-borne diseases. Methods The rodents were captured by using the trap at-night method in Mukezhai, Xianfenggu, Liushilu, Gushanzhai, Wanjingxiangou.The rodents pieces were identified and the density was calculated. Results Totally 4 665 traps were placed and 268 rodents were captured during 2016-2017.Among the seven identified species, the proportion of Apodemuspeninsulae was the highest (31.0%).The density of rodents was higher in primary forest area (7.29%) and edge area (6.10%) than in living area (2.94%)(P < 0.05).The density of rodents was 6.43% in 2016, and 4.44% in 2017(P < 0.05).The highest density (10.7%) was found in September. Conclusion The rodent species with highest density was Apodemuspeninsulae that can transmit Yersinia pestis.Comprehensive prevention measures should be taken to reduce the rodent density for controlling rodent-borne diseases.

Analysis of the related risk factors of diabetic retinopathy and changes of biological structures of anterior segment in diabetic patients / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM:To investigate the risk factors of diabetic retinopathy(DR)in diabetic patients and the influence on the biological structures of anterior segment.<p>METHODS: This was a cross-sectional study. Patients with type 2 diabetes who had been treated in ophthalmology department of Shanghai Tongren Hospital were invited to participate in this study during January 2018 to September 2018. To evaluate clinical characteristics, each subject completed diabetes related history questionnaire, laboratory examination(blood glucose, glycosylated hemoglobin, blood lipid), eye examination(vision, intraocular pressure, slit lamp examination, corneal topography, fundus photography, OCT). According to the severity of retinopathy, patients were classified to three groups: group 0: none DR, group 1: mild and moderate NPDR, group 2: severe NPDR and PDR. Chi-square test, <i>t</i>-test and variance analysis were used to analyze the differences between groups, and risk factors of DR were studied through Logistic regression analysis. Then analyzed whether these risk factors would affect the biological structures of the anterior segment, such as refractive index, corneal thickness, corneal curvature and anterior chamber depth.<p>RESULTS: Totally 219 diabetic patients participated in the survey, and 56 patients(25.6%)were diagnosed with DR. The age of DR patients \〖(66.84±15.13a)(group 1)/(65.45±12.83a)(group 2)\〗 was higher than that of patients without DR(59.59±14.61a)(<i>P</i><0.05). The course of diabetes in DR patients \〖(13.69±10.22a)(group 1)/(15.23±8.22a)(group 2)\〗 was higher than that in patients without DR(9.21±7.92)a(<i>P</i><0.05).The proportion of diabetic nephropathy in DR patients \〖(28.0%)(group 1)/(32.3%)(group 2)\〗 was higher than that those without DR(14.1%)(<i>P</i><0.05).The proportion of DR patients treated with insulin \〖(64.0%)(group 1)/(83.9%)(group 2)\〗 was higher than those without DR(44.2%)(<i>P</i><0.05). Logistic regression analysis showed that the course of diabetes, diabetic nephropathy and insulin were the risk factors of DR(<i>OR</i>>1, <i>P</i><0.05). All of the above risk factors will significantly reduce the corrected vision of DR patients.The corneal thickness of patients with DR(550.82±34.73)μm was greater than those without DR(542.37±33.32)μm(<i>P</i><0.05). The anterior chamber depth of patients with diabetes over 10a(2.49±0.43)mm was less than those with diabetes less than 10y(2.68±0.40)mm(<i>P</i><0.05).<p>CONCLUSION: The course of diabetes, diabetic nephropathy and insulin use were the risk factors for DR. Patients with long duration of diabetes had a shallower anterior chamber depth.

Expert consensus on clinical application of Chinese herbal medicine decoction pieces (First Edition) / 中国中药杂志

Chinese herbal medicine decoction pieces(CHMDP), one of the main forms of traditional Chinese medicine(TCM) in clinic, have been widely used. However, the irrational use is increasingly serious due to the lack of the indicators for judging the rational use of CHMDP in medical institutions and the codes and standards for the clinical use of CHMDP. In order to regulate the rational clinical use of CHMDP, improve the clinical efficacy and ensure the drug safety for the patients, clinical pharmaceutical experts and clinical medical experts from 40 third-grade class-A hospitals nationwide were organized to give the "expert consensus on clinical application of CHMDP" in terms of prescription writing, combined use of drugs, use of special drugs, and drug use for special population. Detailed analysis and argumentation were conducted in accordance with the laws and regulations, Chinese Pharmacopoeia 2015 edition, Chinese Pharmacopoeia Code Notice for Clinical Use of Medicine, Administrative Regulations for Prescriptions, Administrative Specifications for Hospital Prescription Review(interim), and Chinese Traditional Medicine Prescription Format and Writing Specifications, as well as relevant project findings.

Pharmacological effects of site specific conjugated anti-human epidermal growth factor receptor 2-antibody drug conjugate using unnatural amino acid technology / 北京大学学报(医学版)

OBJECTIVE@#To investigate inhibitory activities of a homogenous anti-human epidermal growth factor receptor 2 (HER2)-antibody drug conjugate (ADC) on the proliferation of nine tumor cell lines with different levels of HER2 expressions, and its activities on the tumor growth of five xenograft mouse models.@*METHODS@#The HER2 expression levels of BT-474, Calu-3, MCF-7, MDA-MB-231, MDA-MB-468, SK-BR-3, SK-OV-3, HCC1954, NCI-N87 tumor cell lines were measured using QIFI KIT. For the in vitro anti-proliferation assay, serial diluted anti-HER2-ADC, ado-trastuzumab emtansine, AS269, pAF-AS269 and paclitaxel were added to the seeded cells, and after 72 or 96 hours of incubation, the cell proliferation was analyzed. For the in vivo activity, 5-6 weeks old mice were inoculated with four HER2 positive tumor cell lines HCC1954, BT-474, SK-OV-3, NCI-N87 or one HER2 negative tumor cell line MDA-MB-468. Different amounts of anti-HER2-ADC, ado-trastuzumab emtansine, trastuzumab, paclitaxel and phosphate buffered saline control were injected after the tumor volume reached a certain size, then the tumor growth inhibition was analyzed.@*RESULTS@#The expression levels of the six high HER2-expression cell lines SK-OV-3, NCI-N87, SK-BR-3, Calu-3, HCC1954, BT-474 were between 430 000 to 800 000 receptors per cell, which were 50 times higher than those of the other three low HER2 expression tumor cell lines MDA-MB-231, MCF-7, MDA-MB-468. Anti-HER2-ADC had inhibition effects on cell lines with high level of HER2 expression in the in vitro anti-proliferation assay. The half maximal inhibitory concentrations of anti-HER2-ADC on SK-OV-3, NCI-N87, SK-BR-3, Calu-3, HCC1954, BT-474 tumor cell lines were 46 pmol/L, 17 pmol/L, 17 pmol/L, 161 pmol/L, 125 pmol/L, 50 pmol/L, respectively. Anti-HER2-ADC had a dose dependent antitumor activity in vivo in all the HER2 positive xenograft mouse models. In NCI-N87 xenograft tumor model, the same dose of anti-HER2-ADC showed better anti-tumor activity compared with trastuzumab and ado-trastuzumab emtansine, and its relative tumor proliferation rates were about 1/30 to 1/20 of the two. In HCC1954 xenograft tumor model, the complete regression of the tumor was observed. As expected, anti-HER2-ADC had no tumor inhibitory effects on MDA-MB-468 xenograft models with low HER2 expression. The antitumor activities of anti-HER2-ADC in HER2 positive xenograft tumor models were the same as or better than the activities of ado-trastuzumab emtansine.@*CONCLUSION@#The homogenous site-specific anti-HER2-ADC obtained using unnatural amino acid technology can inhibit the growth of high HER2-expression tumor cells with high potency both in vivo and in vitro.

Research Progress on Prevention and Control Measures of Aflatoxin in Chinese Medicinal Materials / 中国实验方剂学杂志

At present,traditional Chinese medicine(TCM) has attracted more and more attention from the international community.The demand for TCM is increasing in the world.The hidden dangers of potential quality and safety of TCM are also becoming increasingly prominent.Aflatoxin contamination has become one of the important factors affecting the safety of Chinese herbal medicines,and it will fundamentally affect human health and life safety.A variety of methods are used to reduce aflatoxins,however,there are few suitable methods that can be widely used in the cost-effective and large-scale promotion of Chinese herbal medicines.Therefore,it is of great significance to continue to study measures to solve the pollution problems of Aspergillus flavus and its toxins.This article summarizes the hazards and contamination status of aflatoxin,the prevention and control of the growth of A. flavus, and the measures for reducing aflatoxin,and looks ahead to the future prevention and control of A. flavus and its toxins,aiming at providing ideas for the pollution problem of A. flavus and its toxin,to ensure the quality of Chinese herbal medicines,so as to ensure clinical safety medication.

Application of immunophenotypic analysis and molecular genetics in the diagnosis of acute promyelocytic leukemia / 中华血液学杂志

Objective: To investigate the application values of immunophenotypic analysis and molecular genetics in the diagnosis of acute promyelocytic leukemia (APL) . Methods: The retrospective analyses of flow cytometric (FCM) immunophenotypic anyalysis, chromosome karyotype and chromosome fluorescence in situ hybridization (FISH) of 798 outpatient or hospitalization APL patients referred to our hospital between May 2012 and December 2017 were performed to further study the application values of FCM and molecular genetics in the diagnosis of APL. Results: The sensitivity and specificity of FCM were 91.9% and 98.7% respectively. The typical characteristic immunophenotype for APL was as of follows: a high SSC, absence of expression of cluster differntiation (CD) CD34 and HLA-DR, and expression or stronger expression of CD33, consistent expression of CD13, CD9, CD123, expression of CD56, CD7, CD2 (sometimes) . The rest 10% of the cases harbored atypical APL phenotypes, generally accompanied by CD34 and/or HLA-DR expression, decreased SSC and often accompanied by CD2 expression, it was difficult to definitively diagnose APL by this FCM phenotype, and their diagnoses depended on the results of genetics or molecular biology tests. Compared with normal individuals, complex karyotypes APL with t (15;17) translocation, other variant translocations and variant t (11;17) , t (5;17) had no significant differences in terms of their FCM phenotypes. Conclusions: FCM could rapidly and effectively diagnose APL. Despite the fact that complex karyotypes with various additional chromosomal abnormalities were detected in approximately one third of APL cases in addition to the pathognomonic t (15;17) (q22;q21) , they had no observable impact on the overall immunophenotype. Molecular and genetic criteria were the golden criteria for the diagnosis of APL. About 10% of immunophenotyping cases relied on molecular genetics for diagnosis.

C-Type Natriuretic Peptide/Natriuretic Peptide Receptor 2 Is Involved in Cell Proliferation and Testosterone Production in Mouse Leydig Cells

PURPOSE: This study investigated the role of natriuretic peptide receptor 2 (NPR2) on cell proliferation and testosterone secretion in mouse Leydig cells. MATERIALS AND METHODS: Mouse testis of different postnatal stages was isolated to detect the expression C-type natriuretic peptide (CNP) and its receptor NPR2 by quantitative reverse transcription polymerase chain reaction (RT-qPCR). Leydig cells isolated from mouse testis were cultured and treated with shNPR2 lentiviruses or CNP. And then the cyclic guanosine monophosphate production, testosterone secretion, cell proliferation, cell cycle and cell apoptosis in mouse Leydig cells were analyzed by ELISA, RT-qPCR, Cell Counting Kit-8, and flow cytometry. Moreover, the expression of NPR2, cell cycle, apoptosis proliferation and cell cycle related gene were detected by RT-qPCR and Western blot. RESULTS: Knockdown of NPR2 by RNAi resulted in S phase cell cycle arrest, cell apoptosis, and decreased testosterone secretion in mouse Leydig cells. CONCLUSIONS: Our study provides more evidences to better understand the function of CNP/NPR2 pathway in male reproduction, which may help us to treat male infertility.

Study on the surface fungus diversity of commercially Platycladi semen based on high-throughput sequencing technology / 药学学报

The structural composition of the surface fungal community of commercially Platycladi semen was analyzed to reveal the surface fungal biodiversity and structural differences. Platycladi semen was collected from Henan, Shandong and Hong Kong, their DNA was extracted, ITS fragments in DNA were amplified by PCR. Miseq was sequenced on Illumina Hiseq 2500 platform after the PCR products were qualified for quality inspection. The sequence OTU cluster was obtained and bioinformatics analysis was carried out. Microbial communities were not observed in the eyes of the Platycladi semen in the three regions. Sequencing results showed that the surface microbial community had high biodiversity, but there were significant differences in species composition. Seven samples o Platycladi semen obtained 345 947 valid sequences, which were divided into 267 OTUs, 3 phylums. 18 classes, 40 orders, 82 families, 120 genus, 191 species fungi. At the genus level, Aspergillus is the dominant species, accounting for the highest proportion, reaching (93.36 ± 6.01)%. Seven samples were contaminated by Aspergillus flavus, and the pollution levels were 14.58%, 15.98%, 17.64%, 16.44%, 0.97%, 23.39% and 18.86%. Except sample No. 5, Aspergillus cibarius was the most abundant, the other six samples were Aspergillus niger, Aspergillus fumigatus and Aspergillus flavus as the core microflora. By analyzing the diversity of fungi distribution in different habitats, we can fully understand the fungi on the surface of Platycladi semen, lay a foundation for early risk warning of Aspergillus flavus contamination and its aflatoxin contamination, and provide a theoretical basis for the quality and safety of Platycladi semen.