1.Influence factors of untimely inoculation of measles vaccine among children of Enping
Xiaoli CEN ; Guangwen GUO ; Yiyan ZHEN
The Journal of Practical Medicine 2015;(18):3081-3084
Objective To know the influence factors of untimely inoculation of measles vaccine among children of Enping, so as to provide scientific evidence for infectious diseases control. Method Cluster sampling was used and children from 2 towns of Enping were surveyed for their status of measles immunization and other information related to the immunization. Results The results indicated that the coverage rate of measles vaccine (MV) was 92.03%, and the untimely coverage rate was 36.20%. There were no statistical difference between local children and migrant children , urban children and rural children , as well as male children and female children. The results of multi-variate Logistic analysis suggested that the main factors that could decrease the untimely coverage rate of MV were inoculation appointment (OR = 0.415), vaccination health education (OR=0.385), guardians′ education (OR = 0.393) and guardians′ EPI knowledge (OR=0.472). The main factors that could increase the untimely coverage rate of MV were children′s suffering from diseases (OR=2.376) and egg allergy (OR=2.476). Conclusion Greater attention should be paid on measles immunization among children of Enping, which should be noticed and dealt with by proper authorities.
2.Study of synergistic mechanism in the combination ofberberine and evodiamine from the perspective of miRNA
Zuojing YIN ; Zhiwei CAO ; Xinmiao YAN ; Yiyan YANG ; Zhen SHENG
Chinese Pharmacological Bulletin 2017;33(6):772-780
Aim To explore the mechanisms of action (MOA) of synergistic anticancer function in the combination of berberine and evodiamine.Methods We first analyzed the action of suppression in the drug combination from the cell level and validated the dose scope as well as ratio of concentration in synergistic effects of drug combination.Then, the miRNA chip of liver cancer cell BEL-7402 under different treatment was analyzed.By building the miRNA-mRNA network, the MOA of the synergistic drug combination was illustrated.Results Berberine and evodiamine used in combination could significantly synergistically suppress the proliferative ability of liver cancer cells.The special differentially expressed miRNAs (DEmiRNAs) mainly participated in some cancer proliferation-related pathways and biological processes, such as MAPK signaling pathway, endocytosis pathway and insulin signaling pathway.The special target genes influenced by the drug combination not only covered three kinds of membrane receptors, but also took part in the regulation of downstream pathways.Conclusions From the regulation of miRNAs, it is clear that berberine may play a primary role in the synergistical suppression activity of the drug combination in cancer cells.The discovery of synergistic MOA in the combination of berberine and evodiamine from the miRNA level will provide a new guidance to explore more synergistic drug combinations in the future.
3.Research progress and stress-induced variation of DNA methylation in plants.
Zhen YANG ; Xuanming PENG ; Yiyan ZHANG ; Yuanhai ZHANG ; Yong ZHANG
Chinese Journal of Biotechnology 2016;32(12):1642-1653
Chemical modification of DNA bases in recent years has been one of the hot areas of life science research. DNA methylation is a common epigenetic phenomenon and can change the genetic performance without changing the DNA sequence. Various stress factors can induce the variation of DNA methylation in plants, but the response mechanism is still unknown. In this paper, the progress of DNA methylation in plants was reviewed. In combination with the researchconclusions of our own research group, the DNA methylation variation induced by 7Li ion beam and gamma ray was reported to provide a basis for DNA methylation, which may be involved in the phenotypic plasticity of plants.
DNA Methylation
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Epigenesis, Genetic
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Epigenomics
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Plants
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genetics