AIM: To study the protective effect of fenofibrate on diabetic retinal neurodegeneration and observe its effect on miR-26a-5p and its target gene PTEN in the retinal of diabetic mice.METHODS: Diabetic mice models were established and they were gavaged by fenofibrate. H& E staining and transmission electron microscopy were used to observe the impairments of retinal neurons. Real-time PCR was used to examine the expression of miR-26a-5p, and Western blotting was employed to measure the expression of phosphatase and tensin homologue(PTEN)in the retina of diabetic mice. The expression level of nuclear factor-κB(NF-κB), interleukin-1β(IL-1β)and the morphology of neural tissues were observed.RESULTS: When compared with the diabetic mice, fenofibrate significantly attenuated the damage to retinal ganglion cells and the atrophy of retinal nerve fiber layer. While the level of miR-26a-5p was increased and the levels of PTEN and inflammatory mediators were significantly decreased in the retina of fenofibrate treated diabetic mice, with significant statistical significance(P<0.05).CONCLUSIONS: Fenofibrate protects against diabetic retinal neurodegeneration by upregulating miR-26a-5p and inhibiting PTEN, attenuating the inflammatory response and alleviating retinal cell injury.

International registration of herbal drugs is a necessary prerequisite for the internationalization of Chinese materia medica. North America and European Union occupy an important position in the world herbal drugs market, and their drug administration and quality supervision requirements are relatively complete and progressiveness. By summarizing the definition of herbal drugs in North America and European Union, combing and interpreting the relevant laws, regulations and policy documents, this article constructed the registration path of herbal drugs, and discussed the current status of market registration of herbal drugs in North America and European Union based on the examples of successful marketing of herbal drugs under current application and approval in overseas markets. This article believed that in the future, an internationally matched TCM quality standard evidence system should be built, clinical trials of TCM products in line with international standards should be carried out, standards that are the same or higher than international mainstream GMP should be developed, the registration path of TCM compounds should be explored, and professionals to establish an international registration application team should be recruited to provide theoretical and practical support for China's overseas registration of Chinese TCM products, promote TCM products to enter the world mainstream market, and achieve high-quality development of TCM internationalization.

Objective To explore the ideas,methods and pathways for the registration of Chinese medicine prescriptions in overseas countries,to form a strategy for overseas registration of Chinese medicine,and to provide technical support and reference for China's Chinese medicine prescriptions to go abroad.Methods Five representative countries were selected to form corresponding expert teams and exchange platforms for international cooperation.The laws,regulations,rules,standards,specifications and technical guidance documents related to Chinese medicine prescription preparations of the target countries were used as pathway research materials,and the documents were translated directly,naturalized,proofread and diagrammed,and a problem-oriented mechanism for consultation with domestic and international experts was established to form a pathway for overseas registration of Chinese medicine prescription preparations.Results The path for standardization of overseas registration of Chinese medicines was clarified,and the detailed registration paths and corresponding work strategies of Chinese medicines in five countries were formulated with flow charts,tables and explanatory texts.Conclusion By developing standardized registration pathways for traditional Chinese medicine in target countries,reference can be provided for the internationalization of Chinese herbal formula preparations.

Objective To investigate the role of miRNAs in maternal amniotic fluid exosomes in development of isolated ventriculomegaly(VM)in fetuses.Methods Amniotic fluid samples were collected from 9 cases of moderate isolated VM and 8 normal control cases to extract exosomal miRNA,and miRNA sequencing technique was used to identify differentially expressed miRNAs between the two groups.Three miRNAs with significant differential expression between the two groups,whose high expression was associated with VM,were selected for verification with RT-qPCR.Dual luciferase reporter assays were used to verify the regulatory effect of miR-122-5p on its predicted target genes AKT3 and CCDC88C.Gene ontology(GO)and KEGG pathway analyses were performed to explore the possible roles of the top 40 significant differential miRNAs in the pathophysiology of VM.Results We identified a total of 272 differentially expressed miRNAs in VM cases,including 43 up-regulated and 229 down-regulated miRNAs.The target genes of these differential miRNAs were associated with DNA and transcription factor binding,transmembrane transporter and nucleic acid binding transcription factor activity,and cell developmental process.These miRNAs were mostly enriched in the MAPK,cGMP-PKG and Wnt signaling pathways.Verification with RT-qPCR showed that miR-122-5p expression level was significantly lower in VM group than in the control group(P<0.05),which was consistent with miRNA sequencing results;let-7b-5p expression level was significantly lower in VM group,which was contrary to miRNA sequencing result.Dual luciferase reporter assays showed that miR-122-5p was not capable of regulating AKT3 or CCDC88C expressions.Conclusions The highly abundant differentially expressed miRNAs in maternal amniotic fluid exosomes play important roles in the occurrence of fetal VM possibly by regulating the MAPK,PI3K-Akt,Wnt and cGMP-PKG signaling pathways.

Traditional Chinese medicine is an important part of Chinese traditional culture and has played an increasingly important role in the field of health care in recent years.Shandong Province,as a province with large resources of traditional Chinese medicine,has the natural advantages and deep foundation to develop traditional Chinese medicine health care industry.Based on Strengths,Weaknesses,Opportunities & Threats(SWOT)analysis,the advantages,disadvantages,opportunities and challenges of the development of traditional Chinese medicine health care industry in Shandong Province were deeply analyzed.SWOT matrix model was constructed to put forward targeted countermeasures and suggestions,in order to provide theoretical support and practical guidance for the healthy development of traditional Chinese medicine health care industry in Shandong Province.

Traditional Chinese medicine is an important part of Chinese traditional culture and has played an increasingly important role in the field of health care in recent years.Shandong Province,as a province with large resources of traditional Chinese medicine,has the natural advantages and deep foundation to develop traditional Chinese medicine health care industry.Based on Strengths,Weaknesses,Opportunities & Threats(SWOT)analysis,the advantages,disadvantages,opportunities and challenges of the development of traditional Chinese medicine health care industry in Shandong Province were deeply analyzed.SWOT matrix model was constructed to put forward targeted countermeasures and suggestions,in order to provide theoretical support and practical guidance for the healthy development of traditional Chinese medicine health care industry in Shandong Province.

Traditional Chinese medicine is an important part of Chinese traditional culture and has played an increasingly important role in the field of health care in recent years.Shandong Province,as a province with large resources of traditional Chinese medicine,has the natural advantages and deep foundation to develop traditional Chinese medicine health care industry.Based on Strengths,Weaknesses,Opportunities & Threats(SWOT)analysis,the advantages,disadvantages,opportunities and challenges of the development of traditional Chinese medicine health care industry in Shandong Province were deeply analyzed.SWOT matrix model was constructed to put forward targeted countermeasures and suggestions,in order to provide theoretical support and practical guidance for the healthy development of traditional Chinese medicine health care industry in Shandong Province.

Traditional Chinese medicine is an important part of Chinese traditional culture and has played an increasingly important role in the field of health care in recent years.Shandong Province,as a province with large resources of traditional Chinese medicine,has the natural advantages and deep foundation to develop traditional Chinese medicine health care industry.Based on Strengths,Weaknesses,Opportunities & Threats(SWOT)analysis,the advantages,disadvantages,opportunities and challenges of the development of traditional Chinese medicine health care industry in Shandong Province were deeply analyzed.SWOT matrix model was constructed to put forward targeted countermeasures and suggestions,in order to provide theoretical support and practical guidance for the healthy development of traditional Chinese medicine health care industry in Shandong Province.

Traditional Chinese medicine is an important part of Chinese traditional culture and has played an increasingly important role in the field of health care in recent years.Shandong Province,as a province with large resources of traditional Chinese medicine,has the natural advantages and deep foundation to develop traditional Chinese medicine health care industry.Based on Strengths,Weaknesses,Opportunities & Threats(SWOT)analysis,the advantages,disadvantages,opportunities and challenges of the development of traditional Chinese medicine health care industry in Shandong Province were deeply analyzed.SWOT matrix model was constructed to put forward targeted countermeasures and suggestions,in order to provide theoretical support and practical guidance for the healthy development of traditional Chinese medicine health care industry in Shandong Province.

Traditional Chinese medicine is an important part of Chinese traditional culture and has played an increasingly important role in the field of health care in recent years.Shandong Province,as a province with large resources of traditional Chinese medicine,has the natural advantages and deep foundation to develop traditional Chinese medicine health care industry.Based on Strengths,Weaknesses,Opportunities & Threats(SWOT)analysis,the advantages,disadvantages,opportunities and challenges of the development of traditional Chinese medicine health care industry in Shandong Province were deeply analyzed.SWOT matrix model was constructed to put forward targeted countermeasures and suggestions,in order to provide theoretical support and practical guidance for the healthy development of traditional Chinese medicine health care industry in Shandong Province.