Objective To explore the protective effects of pretreatment with the Mongolian medicine Jiruhen Gurigumu-7(JG-7)and Guangzao Sanwei Tang(GZ-3)on myocardial ischemia-reperfusion injury(MIRI)in mice.Methods 60 male C57BL/6J mice were randomly divided into sham operation(Sham)group,model(Model)group,compound danshen drip pill(CDDP)positive control group,JG-7 group,GZ-3 group,and 12 mice in each group to establish the MIRI model,and the H9C2 cells were randomly divided into Control(normoxic)group,H/R(hypoxia 6 h reoxygenation 14 h)group,H/R+JG-7 group,H/R+GZ-3 group.The mice in each group were tested for cardiac function indexes after 30 min of ischemia,24 h and 7 d of reperfusion,TTC staining to detect infarct area after 24 h of MIRI,HE staining to detect myocardial tissue structure and cellular morphology after 24 h of MIRI,TUNEL apoptosis kit to detect apoptosis of myocardial cells after 24 h of MIRI,Masson staining to detect myocardial fibrosis after 7 d of MIRI.Blood was taken from the abdominal aorta,serum was separated,and the indexes after oxidative stress of MIRI were detected in each group of mice,and the survival rate of H9C2 cells after H/R was detected in each group by CCK-8 method.Results The results of TTC showed that JG-7 and GZ-3 reduced the infarct area after 24 h of MIRI in mice.ELISA and kit assays proved that JG-7 and GZ-3 reduced creatine phosphokinase isoenzyme(Creatinekinase-MB,CK-MB),Lactic dehydrogenase(LDH),malondialdehyde(MDA)levels,and increased superoxide dismutase(SOD)levels.HE staining showed that JG-7 and GZ-3 improved myocardial pathology after MIRI 24 h.The results of TUNEL apoptosis assay showed that JG-7 and GZ-3 improved apoptosis in myocardial tissues 24 h after MIRI.Masson staining results showed that JG-7 and GZ-3 could reduce the area of myocardial tissue fibrosis after MIRI 7 d.CCK-8 assay results showed that JG-7 and GZ-3 could improve the cell survival rate after H/R in H9C2 cells.Conclusion Pre-treatment with Mongolian medicine Jiruhen Gurigumu-7 and Guangzao Sanwei Tang can reduce the damage caused after ischemia-reperfusion(I/R),decrease the area of myocardial infarction and fibrosis after I/R in mice,and protect the heart.

Objective To explore the protective effects of pretreatment with the Mongolian medicine Jiruhen Gurigumu-7(JG-7)and Guangzao Sanwei Tang(GZ-3)on myocardial ischemia-reperfusion injury(MIRI)in mice.Methods 60 male C57BL/6J mice were randomly divided into sham operation(Sham)group,model(Model)group,compound danshen drip pill(CDDP)positive control group,JG-7 group,GZ-3 group,and 12 mice in each group to establish the MIRI model,and the H9C2 cells were randomly divided into Control(normoxic)group,H/R(hypoxia 6 h reoxygenation 14 h)group,H/R+JG-7 group,H/R+GZ-3 group.The mice in each group were tested for cardiac function indexes after 30 min of ischemia,24 h and 7 d of reperfusion,TTC staining to detect infarct area after 24 h of MIRI,HE staining to detect myocardial tissue structure and cellular morphology after 24 h of MIRI,TUNEL apoptosis kit to detect apoptosis of myocardial cells after 24 h of MIRI,Masson staining to detect myocardial fibrosis after 7 d of MIRI.Blood was taken from the abdominal aorta,serum was separated,and the indexes after oxidative stress of MIRI were detected in each group of mice,and the survival rate of H9C2 cells after H/R was detected in each group by CCK-8 method.Results The results of TTC showed that JG-7 and GZ-3 reduced the infarct area after 24 h of MIRI in mice.ELISA and kit assays proved that JG-7 and GZ-3 reduced creatine phosphokinase isoenzyme(Creatinekinase-MB,CK-MB),Lactic dehydrogenase(LDH),malondialdehyde(MDA)levels,and increased superoxide dismutase(SOD)levels.HE staining showed that JG-7 and GZ-3 improved myocardial pathology after MIRI 24 h.The results of TUNEL apoptosis assay showed that JG-7 and GZ-3 improved apoptosis in myocardial tissues 24 h after MIRI.Masson staining results showed that JG-7 and GZ-3 could reduce the area of myocardial tissue fibrosis after MIRI 7 d.CCK-8 assay results showed that JG-7 and GZ-3 could improve the cell survival rate after H/R in H9C2 cells.Conclusion Pre-treatment with Mongolian medicine Jiruhen Gurigumu-7 and Guangzao Sanwei Tang can reduce the damage caused after ischemia-reperfusion(I/R),decrease the area of myocardial infarction and fibrosis after I/R in mice,and protect the heart.

Objective Through the study of different grades for Atractylodis macrocephalae Rhizoma decoction pieces,improve the quality evaluation method,and provide theoretical basis for the classification of Atractylodis macrocephalae Rhizoma.Methods According to the traditional classification,the Atractylodis macrocephalae Rhizoma decoction pieces was divided into three grades.By HPLC and UV method,the determination of atractylodes lactone Ⅰ,Ⅱ,Ⅲ and the content of total polysaccharide for 36 batches of different grades of Atractylodis macrocephalae Rhizoma decoction pieces.According to the 2020 edition of Chinese pharmacopoeia,the correlation between the appearance traits of different grades of Atractylodis macrocephalae Rhizoma decoction pieces and the internal quality control indexes was analyzed.Results According to the appearance characters,multiple quality control index of content determination,through the principal component analysis,cluster analysis and so forth.The quality of first-grade decoction pieces of Atractylodis macrocephalae Rhizoma is significantly better than the second-grade and third-grade decoction pieces(P<0.05),and there is no significant difference between second-grade and third-grade decoction pieces(P>0.05).As a result,the Atractylodis macrocephalae Rhizoma decoction pieces can be divided into two grades,different grades with the content of atractylodes lactone and total polysaccharide were positively correlated.Conclusion The classification of Atractylodis macrocephalae Rhizoma decoction pieces based on multiple quality control indexes combined with appearance characters can provide a scientific basis for the quality control and grade study of this decoction piece.

Objective:To investigate the effect of irradiation on the expression of miR-150-5p and miR-23a-3p in human peripheral blood serum by collecting peripheral blood of tumor patients before and after radiotherapy, so as to provide scientific basis for finding radiation biomarkers.Methods:A total of 63 tumor patients treated with radiotherapy from October 2021 to March 2022 were enrolled in this study. The relative expression levels of miR-150-5p and miR-23a-3p in peripheral blood serum in these patients were detected using the real-time fluorescence quantitative PCR (qPCR) before and after radiotherapy. The differential changes in the expression levels of the two miRNAs in the peripheral blood serum of the patients before and after radiotherapy were compared, and their relationships with factors such as cancer types were analyzed.Results:The relative expression levels of miR-150-5p and miR-23a-3p in peripheral blood serum of the patients after radiotherapy were significantly lower than those before radiotherapy ( t = 4.97, Z = -2.77, P < 0.05). Among different cancer types, the relative expression level of miR-150-5p in the patients with breast cancer, esophageal cancer, or other digestive tract cancer decreased after radiotherapy ( t = 3.47, 2.47, 2.87, P < 0.05), and the relative expression level of miR-23a-3p in the patients with digestive tract cancer decreased after radiotherapy ( Z = -1.99, P < 0.05). The changes in the expression level of miR-150-5p before and after radiotherapy were not affected by gender, age, chemotherapy, and cancer type ( P > 0.05). By contrast, the changes in the expression level of miR-23a-3p before and after radiotherapy were significantly affected by gender, age, and chemotherapy ( t=2.04, -3.34, -2.29, P<0.05). Conclusions:The expression of miR-150-5p in the serum of tumor patients may be affected by radiotherapy, which has the potential to be used as a biological indicator of radiation.

Through literature search in regular database and official websites of relevant countries, this paper combs and summarizes the main characteristics of disease prevention and control systems in five countries, the United States, Germany, South Korea, Australia and Japan, and the European Union at key levels including legal construction, organizational structure, financing, personnel construction and international cooperation, in order to provide decision support for the construction of disease prevention and control system in China in the future.

Through literature search in regular database and official websites of relevant countries, this paper combs and summarizes the main characteristics of disease prevention and control systems in five countries, the United States, Germany, South Korea, Australia and Japan, and the European Union at key levels including legal construction, organizational structure, financing, personnel construction and international cooperation, in order to provide decision support for the construction of disease prevention and control system in China in the future.

Objective:Based on the policy goals of family doctors′ contracted services, to build an indicator system as policy tools for policy outcomes assessment and policy delivery optimization.Methods:Through literature and policy review, an evaluation conceptual framework was built based on policy goals of family doctors′ contracted services, and an indicator system was established using Delphi method.Results:Upon consultation of 21 experts, an indicator system for policy effect assessment of the family doctors′ contracted services was established, covering both policy implementations and goal effects. This system consisted of 7 level-2 indicators and 23 level-3 indicators.Conclusions:The indicator system oriented to policy goals, ensures the pertinence of policy effect assessment to play a strong guidance on practical implementation of the family doctors′ contracted services.

Objective:To analyze the policy implementation of family doctors′ contracted services in different regions based on practices in typical regions.Methods:From April to October 2019, we conducted field investigations in 14 regions, collected data on policy formulation and implementation, organizational form and service content of contracting service, incentive mechanism and capacity development. By means of key persons′ interview, we tried to understand the background of district/county policy implementation, as well as policy delivery and existing difficulties. The measurement data were expressed by means, and the qualitative data were used to extract the key content through semantic analysis.Results:The policy of family doctors′ contracted services had been promoted from pilot exploration to normative development. 71.0% of responsible entities of the contracted services in research regions were family doctor teams. Contraction fee has begun to reflect the value of family doctors′ work, while the average contracted service fees in the eastern, central and western regions were 125, 31.25 and 42.5 yuan/person/year respectively. Comprehensive incentives and health insurance policies in some regions played a role in promoting contracted services.Conclusions:It is necessary to establish the family doctors′ " three roles" management concept, namely health gatekeeper, rights exchanger and resource coordinator; strengthen the professional training and capacity promoting of family doctors, implement the connotation of contracted service fees and economic incentives, in order to play the policy′s basic role in constructing a health-centered system.

To summarize the breeding and identification of Wuzhishan miniature pig models with α-l,3-galactosyltransferase (GGTA1) gene-knockout (GTKO).Methods The breeding and reproduction perform of GTKO Wuzhishan miniature pigs were assessed and the quantity of piglets was counted.The GTKO Wuzhishan miniature pig models with GGTA1gene knockout were validated by polymerase chain reaction(PCR).The αGal phenotype of peripheral blood mononuclear cells (PBMC) in human,wild-type Wuzhishan miniature pigs and GTKO Wuzhishan miniature pigs was detected by fluorescent microscope and flow cytometry.Routine blood test parameters were statistically compared between the GTKO and wild-type Wuzhishan miniature pigs.Results The inheritance of GGTA1 genotype complied with Mendel's law.Flow cytometry detected no fluorescent expression of PBMC in GGTA1-/-pig models,which were consistent with the genotype identification results.The mean piglets of the primiparous GTKO Wuzhishan miniature pigs were (6.8±1.8) and (8.3±2.2) for the multiparous Wuzhishan miniature pigs.No statistical significance was noted in routine blood test parameters between the GTKO and wild-type Wuzhishan miniature pigs (all P＞0.05).Conclusions Stable inheritance and normal reproductive capacity are observed in two generations of Wuzhishan miniature pigs continuously.GTKO Wuzhishan miniature pig is a reliable donor for heterogeneous organ transplantation.

Aims To study the role of NGF/Trk A sig-naling pathway in Memantine ( MEM) improving APP/PS1 transgenic mice cognitive deficits and to explore its possible mechanisms. Methods Cognitive perform-ance was assessed by Morris water maze( MWM) , pas-sive avoidance test( PAT) and locomotivity test. Aβ1-42 protein levels were determined by immunohistochemis-try. The activities of AChE and ChAT were also exam-ined by ELISA and colorimetry. Western blot was used to detect the expression levels of NGF and its receptor TrkA and the downstream ERK pathway. Results MEM treatment significantly ameliorated the cognitive deficits, dramatically reduced the Aβ1-42 overexpres-sion. MEM increased the activity of choline acetyl-transferase( ChAT) , while decreased that of acetylcho-line esterase( AChE) . Moreover, MEM activiated NGF signaling by increasing the phosphorylation of TrkA fol-lowing the increased phosphorylation of c-Raf, ERK1/2 and downstream effector CREB after MEM treatment. Conclusion MEM treatment may activate the NGF/TrkA signaling in APP/PS1 mice to reduce amyloidosis and cognitive deficits.