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Disaster literacy, which is a concept involved in moral quality, knowledge, and ability, impacts the disaster response. This study aimed to evaluate disaster education needs and to determine the affecting factors of disaster literacy among college students.
A cross-sectional study was conducted through questionnaires. A total of 7200 college students from 10 colleges and universities in 5 provinces and cities in China were investigated.
Disaster education needs were urgently. For the participants, 79.43% stated that their families were not prepared for disaster prevention items, 96.36% suggested a campus emergency rescue team, and 88.64% obtained disaster knowledge through TV or Internet, and only 12.89% had offered relevant courses in their disciplines. The total scores of college students’ disaster literacy were 87.85 ± 19.86, which was at a low level. Multiple linear regression analysis showed that age, major, grade, place of residence, parental education, mother’s occupation, disaster experience, disaster training experience, and family disaster preparedness significantly affected college students’ disaster literacy, especially grade, family disaster preparedness, and place of residence.
College students’ disaster literacy education is urgently needed. Families, communities, colleges and the government should attach importance to disaster literacy education for college students.
DNA methylation is an important form of epigenetic regulation in mammalian development. Methyl-CpG-binding domain protein 1 (MBD1) and methyl-CpG-binding domain protein 2 (MeCP2) are two members of the MBD subfamily of proteins that bind methylated CpG to maintain the silencing effect of DNA methylation. Given their important roles in linking DNA methylation with gene silencing, this study characterized the coordinated mRNA expression and protein localization of MBD1 and MeCP2 in embryos and placentas and aimed to analysis the effects of MBD1 and MeCP2 on transgenic cloned goats. Our result showed that MBD1 expression of transgenic cloned embryo increased significantly at the 2–4-cell and 8–16-cell stages (P < 0.05), then decreased at the morula and blastocyst stages (P < 0.05); MeCP2 expression in transgenic cloned embryo was significant decreased at the 2–4-cell stage and increased at the 8–16-cell stage (P < 0.05). Placenta morphology analysis showed that the cotyledon number of deceased transgenic cloned group (DTCG) was significantly lower than that the normal goats (NG) and in the live transgenic cloned goats (LTCG) (P < 0.05). MBD1 and MeCP2 were clearly detectable in the placental trophoblastic binucleate cells by immunohistochemical staining. Moreover, MBD1 and MeCP2 expression in DTCG was significant higher than in the NG and the LTCG (P < 0.05). In summary, aberrant expression of methylation CpG binding proteins MBD1 and MeCP2 was detected in embryonic and placental development, which reflected abnormal transcription regulation and DNA methylation involved in MBD1 and MeCP2. These findings have implications in understanding the low efficiency of transgenic cloning.
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